{"id":19353,"date":"2026-10-06T04:07:25","date_gmt":"2026-10-06T04:07:25","guid":{"rendered":"https:\/\/tuohaihardware.com\/?p=19353"},"modified":"2026-10-09T08:28:31","modified_gmt":"2026-10-09T08:28:31","slug":"dopravni-retez-tridy-70","status":"publish","type":"post","link":"https:\/\/tuohaihardware.com\/cs\/grade-70-transport-chain\/","title":{"rendered":"Transportn\u00ed \u0159et\u011bz t\u0159\u00eddy 70: Specifikace, rozm\u011bry, bezpe\u010dnostn\u00ed tipy a p\u0159\u00edslu\u0161enstv\u00ed"},"content":{"rendered":"

M\u016f\u017eete m\u00edt \u0159et\u011bz t\u0159\u00eddy 70 s jasn\u00fdm limitem nosnosti, ale st\u00e1le si nejste jisti, zda jsou h\u00e1ky a pojistka vhodn\u00e9 pro va\u0161i z\u00e1t\u011b\u017e. Velikost \u0159et\u011bzu je pouze jednou \u010d\u00e1st\u00ed tohoto rozhodnut\u00ed. D\u016fle\u017eit\u00e9 jsou tak\u00e9 kov\u00e1n\u00ed, kotevn\u00ed body a zp\u016fsob zaji\u0161t\u011bn\u00ed n\u00e1kladu. Tato p\u0159\u00edru\u010dka vysv\u011btluje hlavn\u00ed specifikace p\u0159epravn\u00edch \u0159et\u011bz\u016f t\u0159\u00eddy 70, referen\u010dn\u00ed velikosti, b\u011b\u017en\u00e9 upev\u0148ovac\u00ed prvky a kontroly, kter\u00e9 v\u00e1m pomohou s n\u00e1kupem kompatibiln\u00ed upev\u0148ovac\u00ed sestavy.<\/p>\n

K \u010demu se pou\u017e\u00edv\u00e1 dopravn\u00ed \u0159et\u011bz t\u0159\u00eddy 70?<\/h2>\n

Transportn\u00ed \u0159et\u011bz t\u0159\u00eddy 70<\/a> je tepeln\u011b zpracovan\u00fd \u0159et\u011bz z uhl\u00edkov\u00e9 oceli ur\u010den\u00fd pro v\u00e1z\u00e1n\u00ed a zaji\u0161t\u011bn\u00ed n\u00e1kladu. M\u016f\u017eete jej tak\u00e9 vid\u011bt prod\u00e1van\u00fd jako transportn\u00ed \u0159et\u011bz G70, \u0159et\u011bz G70, v\u00e1zac\u00ed \u0159et\u011bz nebo upev\u0148ovac\u00ed \u0159et\u011bz. Tyto n\u00e1zvy popisuj\u00ed jeho p\u0159epravn\u00ed roli, ale ne\u0159\u00edkaj\u00ed v\u00e1m o v\u00fdkonu ka\u017ed\u00e9ho h\u00e1ku nebo v\u00e1zac\u00edho \u0159et\u011bzce, kter\u00fd je k n\u011bmu p\u0159ipevn\u011bn. B\u011b\u017en\u00e9 jsou \u017elut\u00e9 zinkov\u00e9 nebo \u017elut\u00e9 chrom\u00e1tov\u00e9 povrchov\u00e9 \u00fapravy. Povrchov\u00e1 \u00faprava pom\u00e1h\u00e1 chr\u00e1nit ocel, ale samotn\u00e1 barva nepotvrzuje jakost \u0159et\u011bzu.<\/p>\n

Hlavn\u00ed omezen\u00ed je jasn\u00e9: dopravn\u00ed \u0159et\u011bzec t\u0159\u00eddy 70 je ne pro zved\u00e1n\u00ed nad hlavou<\/strong>. Norma ASTM A413\/A413M zahrnuje do specifikace \u0159et\u011bz\u016f z uhl\u00edkov\u00e9 oceli pro v\u00e1z\u00e1n\u00ed b\u0159emen a dal\u0161\u00ed pou\u017eit\u00ed mimo zved\u00e1n\u00ed nad hlavou ocel t\u0159\u00eddy 70. Vysok\u00e1 pevnost v tahu nebo zku\u0161ebn\u00ed zkou\u0161ka dopravn\u00edho \u0159et\u011bzu z n\u011bj ned\u011blaj\u00ed jmenovit\u00fd zvedac\u00ed \u0159et\u011bz. Pokud va\u0161e pr\u00e1ce zahrnuje zved\u00e1n\u00ed zav\u011b\u0161en\u00fdch b\u0159emen, zvolte m\u00edsto toho za\u0159\u00edzen\u00ed ur\u010den\u00e9 a dimenzovan\u00e9 pro tento \u00fakol.<\/p>\n

\"Zlat\u00e9<\/p>\n

Kter\u00e9 specifikace byste m\u011bli zkontrolovat?<\/h2>\n

P\u0159i porovn\u00e1v\u00e1n\u00ed dvou \u0159et\u011bz\u016f t\u0159\u00eddy 70 za\u010dn\u011bte s jejich zam\u00fd\u0161len\u00fdm pou\u017eit\u00edm a p\u0159\u00edslu\u0161nou specifikac\u00ed. Pot\u00e9 zkontrolujte jmenovitou velikost \u0159et\u011bzu, nosnost (WLL), rozm\u011bry \u010dl\u00e1nk\u016f, povrchovou \u00fapravu, ozna\u010den\u00ed a dokumentaci dodanou s dan\u00fdm produktem. N\u00e1zev velikosti, nap\u0159\u00edklad 3\/8 palce, identifikuje jmenovitou velikost \u0159et\u011bzu. Neuv\u00e1d\u00ed v\u0161echny rozm\u011bry \u010dl\u00e1nk\u016f ani jmenovit\u00e9 hodnoty hotov\u00e9 sestavy.<\/p>\n

WLL je nosnost pro b\u011b\u017en\u00e9 pou\u017eit\u00ed.<\/strong> Zku\u0161ebn\u00ed zkou\u0161ka ov\u011b\u0159uje, zda \u0159et\u011bz spl\u0148uje specifikovan\u00fd zku\u0161ebn\u00ed po\u017eadavek. Minim\u00e1ln\u00ed pevnost v tahu je samostatn\u00fdm m\u011b\u0159\u00edtkem pevnosti. Ani jedna z hodnot zku\u0161ebn\u00ed zkou\u0161ky neoprav\u0148uje k pou\u017eit\u00ed \u0159et\u011bzu p\u0159i dan\u00e9 s\u00edle. Specifikace sva\u0159ovan\u00fdch ocelov\u00fdch \u0159et\u011bz\u016f NACM uv\u00e1d\u00ed, \u017ee hodnoty zku\u0161ebn\u00ed zkou\u0161ky a minim\u00e1ln\u00ed pevnosti v tahu nesm\u00ed b\u00fdt pou\u017eity jako provozn\u00ed ani n\u00e1vrhov\u00e9 zat\u00ed\u017een\u00ed.<\/p>\n

Stejn\u011b d\u016fle\u017eit\u00e9 je i usazen\u00ed \u010dl\u00e1nku, stejn\u011b jako jeho pevnost. Pokud h\u00e1k, spojka nebo nap\u00edna\u010d mus\u00ed pasovat na konkr\u00e9tn\u00ed \u0159et\u011bz, zeptejte se na pr\u016fm\u011br materi\u00e1lu \u010dl\u00e1nku, vnit\u0159n\u00ed d\u00e9lku a vnit\u0159n\u00ed \u0161\u00ed\u0159ku. H\u00e1k, kter\u00fd vypad\u00e1 co do velikosti podobn\u011b, nemus\u00ed pasovat tak, jak je zam\u00fd\u0161leno. U opakovan\u00fdch objedn\u00e1vek ov\u011b\u0159te dohodnut\u00e9 rozm\u011bry a tolerance na v\u00fdkresu nebo v technick\u00e9m listu produktu spolu s jakost\u00ed \u0159et\u011bzu a nosnost\u00ed.<\/p>\n

\"Detailn\u00ed<\/p>\n

Velikosti \u0159et\u011bz\u016f t\u0159\u00eddy 70 a referen\u010dn\u00ed nosnosti<\/h2>\n

N\u00ed\u017ee uveden\u00e1 tabulka uv\u00e1d\u00ed jmenovit\u00e9 rozm\u011bry a maxim\u00e1ln\u00ed hodnoty nosnosti (WLL) v Tabulka dopravn\u00edch \u0159et\u011bzc\u016f NACM pro stupe\u0148 70 z roku 2010<\/strong>. Toto jsou standardn\u00ed referen\u010dn\u00ed hodnoty, nikoli hodnocen\u00ed nebo v\u00fdsledek testu pro konkr\u00e9tn\u00ed \u0161ar\u017ei hardwaru Tuohai. P\u0159ed pou\u017eit\u00edm si ov\u011b\u0159te skute\u010dn\u00e9 hodnoty \u0159et\u011bzu a sestavy v aktu\u00e1ln\u00ed dokumentaci k produktu od dodavatele.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Jmenovit\u00e1 velikost \u0159et\u011bzu<\/th>\nJmenovit\u00e1 metrick\u00e1 velikost<\/th>\nReferen\u010dn\u00ed WLL NACM<\/th>\n<\/tr>\n<\/thead>\n
1\/4 palce<\/td>\n7,0 mm<\/td>\n3 150 liber \/ 1 430 kg<\/td>\n<\/tr>\n
5\/16 palce<\/td>\n8,7 mm<\/td>\n4 700 liber \/ 2 130 kg<\/td>\n<\/tr>\n
3\/8 palce<\/td>\n10,0 mm<\/td>\n6 600 liber \/ 2 990 kg<\/td>\n<\/tr>\n
7\/16 palce<\/td>\n11,9 mm<\/td>\n8 750 liber \/ 3 970 kg<\/td>\n<\/tr>\n
1\/2 palce<\/td>\n13,0 mm<\/td>\n11 300 liber \/ 5 130 kg<\/td>\n<\/tr>\n
5\/8 palce<\/td>\n16,0 mm<\/td>\n15 800 liber \/ 7 170 kg<\/td>\n<\/tr>\n
3\/4 palce<\/td>\n20,0 mm<\/td>\n24 700 liber \/ 11 200 kg<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Zdroj: Specifikace sva\u0159ovan\u00fdch ocelov\u00fdch \u0159et\u011bz\u016f NACM, tabulka III, p\u0159ijat\u00e9 11. dubna 2010. V t\u00e9to tabulce se rovn\u011b\u017e uv\u00e1d\u00ed, \u017ee transportn\u00ed \u0159et\u011bz t\u0159\u00eddy 70 se nesm\u00ed pou\u017e\u00edvat pro zved\u00e1n\u00ed nad hlavou. V kataloz\u00edch transportn\u00edch \u0159et\u011bz\u016f se \u010dasto objevuj\u00ed velikosti jako 1\/4, 5\/16, 3\/8 a 1\/2 palce; \u00fapln\u00e1 standardn\u00ed tabulka zahrnuje i dal\u0161\u00ed velikosti. Dostupnost z\u00e1vis\u00ed na dodavateli a produktov\u00e9 \u0159ad\u011b.<\/p>\n

Nepou\u017e\u00edvejte tuto tabulku k v\u00fdb\u011bru \u0159et\u011bzu pouze na z\u00e1klad\u011b hmotnosti n\u00e1kladu. V\u011bt\u0161\u00ed \u0159et\u011bz m\u00e1 vy\u0161\u0161\u00ed referen\u010dn\u00ed nosnost WLL, ale dokon\u010den\u00e9 upevn\u011bn\u00ed m\u016f\u017ee b\u00fdt omezeno jeho h\u00e1kem, pojivem, spojkou nebo kotevn\u00edm bodem. Vnit\u0159n\u00ed rozm\u011bry \u010dl\u00e1nku se mohou u produkt\u016f se stejnou jmenovitou velikost\u00ed tak\u00e9 li\u0161it. Zkontrolujte v\u00fdkres a jmenovit\u00e9 hodnoty p\u0159esn\u00e9 sestavy, kterou pl\u00e1nujete koupit.<\/p>\n

Kter\u00e9 p\u0159\u00edslu\u0161enstv\u00ed pat\u0159\u00ed k \u0159et\u011bzu t\u0159\u00eddy 70?<\/h2>\n

Upevn\u011bn\u00ed mus\u00ed pasovat na \u0159et\u011bz a m\u00edt vhodnou nosnost pro danou funkci. N\u00ed\u017ee uveden\u00e9 mo\u017enosti slou\u017e\u00ed r\u016fzn\u00fdm \u00fa\u010del\u016fm; jejich n\u00e1zvy nenahrazuj\u00ed kontrolu rozsahu velikost\u00ed a nosnosti WLL od v\u00fdrobce.<\/p>\n

H\u00e1ky Clevis<\/strong> zab\u00edraj\u00ed s \u010dl\u00e1nky \u0159et\u011bzu a jsou b\u011b\u017en\u00e9 na konc\u00edch sestav dopravn\u00edch \u0159et\u011bz\u016f. H\u00e1ky Clevis s pojistkou<\/strong> jsou dal\u0161\u00ed mo\u017enost\u00ed koncov\u00e9ho uchycen\u00ed. P\u0159ed v\u00fdb\u011brem kter\u00e9hokoli typu zkontrolujte p\u0159esn\u00fd rozsah velikost\u00ed \u0159et\u011bzu h\u00e1ku, nosnost WLL a usazen\u00ed v bod\u011b spojen\u00ed. Odpov\u00eddaj\u00edc\u00ed jmenovit\u00e1 velikost \u0159et\u011bzu nebo p\u0159\u00edtomnost z\u00e1padky neur\u010duje jmenovit\u00e9 hodnoty h\u00e1ku.<\/p>\n

Spojovac\u00ed \u010dl\u00e1nky a dvojit\u00e9 vidlicov\u00e9 \u010dl\u00e1nky<\/strong> lze spojit kompatibiln\u00ed komponenty pro \u0159\u00edzen\u00ed n\u00e1kladu. Nep\u0159edpokl\u00e1dejte, \u017ee jak\u00fdkoli konektor, kter\u00fd se uzav\u00edr\u00e1 kolem \u0159et\u011bzu, je vhodn\u00fd pro jmenovitou opravu. Pou\u017eijte konektor, kter\u00fd v\u00fdrobce \u0159et\u011bzu nebo sestavy pro tento \u00fa\u010del akceptuje, s odpov\u00eddaj\u00edc\u00ed t\u0159\u00eddou, velikost\u00ed a nosnost\u00ed. Po\u0161kozen\u00fd \u0159et\u011bz by m\u011bl b\u00fdt vy\u0159azen z provozu, dokud nebudou zkontrolov\u00e1ny p\u0159edpisy v\u00fdrobce pro opravy.<\/p>\n

Nakl\u00e1dac\u00ed po\u0159ada\u010de<\/strong> Napn\u011bte upev\u0148ovac\u00ed prvek. R\u00e1\u010dnanov\u00e9 a p\u00e1kov\u00e9 utahov\u00e1ky pou\u017e\u00edvaj\u00ed r\u016fzn\u00e9 mechanismy, proto si vyberte takov\u00fd, kter\u00fd vyhovuje va\u0161emu pracovn\u00edmu postupu a lze jej ovl\u00e1dat podle pokyn\u016f. Nejprve ov\u011b\u0159te uveden\u00fd rozsah velikost\u00ed \u0159et\u011bzu a nosnost (WLL). U utahov\u00e1ku ozna\u010den\u00e9ho pro \u0159et\u011bzy 5\/16 i 3\/8 palce je st\u00e1le t\u0159eba zkontrolovat shodu s nosnost\u00ed \u0159et\u011bzu, kter\u00fd skute\u010dn\u011b pou\u017e\u00edv\u00e1te. Utahovac\u00ed prvek s vy\u0161\u0161\u00edm jmenovit\u00fdm odporem nem\u016f\u017ee zv\u00fd\u0161it nosnost \u0159et\u011bzu s ni\u017e\u0161\u00edm jmenovit\u00fdm odporem. Nepou\u017e\u00edvejte neschv\u00e1lenou li\u0161tu ani jin\u00fd p\u0159\u00eddavn\u00fd p\u00e1kov\u00fd mechanismus k utahov\u00e1n\u00ed utahovac\u00edho prvku nad r\u00e1mec pokyn\u016f v\u00fdrobce.<\/p>\n

\"Vinut\u00fd<\/p>\n

Pokud si objedn\u00e1v\u00e1te \u0159et\u011bz s ji\u017e namontovan\u00fdmi h\u00e1ky, zeptejte se, zda uveden\u00e1 nosnost (WLL) plat\u00ed pro kompletn\u00ed sestava \u0159et\u011bzu<\/strong>. Pokud kupujete \u0159et\u011bz, h\u00e1\u010dky a pojistku samostatn\u011b, se\u017ee\u0148te si charakteristiky ka\u017ed\u00e9 polo\u017eky a p\u0159ed uveden\u00edm do provozu zkontrolujte hotov\u00e9 proveden\u00ed. \u017dlut\u00e1 povrchov\u00e1 \u00faprava nebo odpov\u00eddaj\u00edc\u00ed jmenovit\u00e1 velikost samy o sob\u011b nemohou zaru\u010dit kompatibilitu.<\/p>\n

Jak zkontrolujete kompletn\u00ed upevn\u011bn\u00ed p\u0159ed pou\u017eit\u00edm?<\/h2>\n

Nejprve ur\u010dete n\u00e1klad, jeho hmotnost, dostupn\u00e9 \u00fachyty a p\u0159epravn\u00ed pravidla na va\u0161\u00ed trase. Rozhodn\u011bte se, zda pou\u017eijete p\u0159\u00edm\u00e9 \u00fachyty z vozidla k n\u00e1kladu, nebo \u00fachyty, kter\u00e9 vedou nad n\u00edm nebo kolem n\u011bj. Toto uspo\u0159\u00e1d\u00e1n\u00ed m\u011bn\u00ed zp\u016fsob v\u00fdpo\u010dtu jmenovit\u00e9 nosnosti podle pravidel USA. T\u011b\u017ek\u00e1 za\u0159\u00edzen\u00ed a n\u011bkter\u00e9 dal\u0161\u00ed n\u00e1klady mohou m\u00edt tak\u00e9 specifick\u00e9 po\u017eadavky na zaji\u0161t\u011bn\u00ed.<\/p>\n

D\u00e1le zkontrolujte nejni\u017e\u0161\u00ed nosnost v cel\u00e9m syst\u00e9mu<\/strong>. Podle americk\u00e9ho p\u0159edpisu 49 CFR 393.108 je jmenovit\u00e1 nosnost upev\u0148ovac\u00edch prvk\u016f omezena nejni\u017e\u0161\u00ed hodnotou komponentu, v\u010detn\u011b nap\u00edna\u010de, nebo kotevn\u00edm bodem, pokud je ni\u017e\u0161\u00ed. Pokyny FMCSA pro zaji\u0161t\u011bn\u00ed n\u00e1kladu rovn\u011b\u017e vy\u017eaduj\u00ed celkovou nosnost alespo\u0148 o polovinu hmotnosti n\u00e1kladu pro krytou silni\u010dn\u00ed p\u0159epravu v USA, s r\u016fzn\u00fdmi pravidly po\u010d\u00edt\u00e1n\u00ed pro p\u0159\u00edm\u00e9 upev\u0148ov\u00e1n\u00ed a upev\u0148ov\u00e1n\u00ed nad n\u00e1kladem. Minim\u00e1ln\u00ed po\u010det upev\u0148ovac\u00edch prvk\u016f je samostatn\u00fdm po\u017eadavkem. Samotn\u00e1 tabulka nosnosti \u0159et\u011bz\u016f v\u00e1m nedok\u00e1\u017ee sd\u011blit, kolik \u0159et\u011bz\u016f je pro n\u00e1klad pot\u0159eba.<\/p>\n

P\u0159ed pou\u017eit\u00edm zkontrolujte \u0159et\u011bz, h\u00e1ky, spojky, pojivo a kotevn\u00ed body. Pokud zjist\u00edte ohnut\u00e9 nebo zkroucen\u00e9 \u010dl\u00e1nky, nata\u017een\u00ed, hlubok\u00e9 \u0159ezn\u00e9 z\u00e1\u0159ezy, siln\u00e9 opot\u0159eben\u00ed nebo po\u0161kozen\u00e9 kov\u00e1n\u00ed, vy\u0159a\u010fte za\u0159\u00edzen\u00ed z provozu. Zkontrolujte, zda ka\u017ed\u00fd h\u00e1k spr\u00e1vn\u011b sed\u00ed a zda se \u00fachyt b\u011bhem j\u00edzdy nem\u016f\u017ee uvolnit ani uvolnit. Chra\u0148te kontaktn\u00ed body, kde by okraje mohly po\u0161kodit \u00fachyt, a dodr\u017eujte p\u0159\u00edslu\u0161n\u00e1 pravidla pro kontrolu a op\u011btovnou kontrolu dan\u00e9 cesty. Pravidla FMCSA pro zaji\u0161t\u011bn\u00ed n\u00e1kladu vy\u017eaduj\u00ed, aby upev\u0148ovac\u00ed d\u00edly byly v \u0159\u00e1dn\u00e9m provozn\u00edm stavu, a vy\u017eaduj\u00ed ochranu hran v p\u0159\u00edpadech, kdy by mohlo doj\u00edt k od\u0159en\u00ed nebo pro\u0159\u00edznut\u00ed \u00fachytu.<\/p>\n

\u010casto kladen\u00e9 ot\u00e1zky<\/h2>\n

Co kdy\u017e \u0159et\u011bz nem\u00e1 \u010ditelnou zna\u010dku stupn\u011b pevnosti nebo WLL?<\/h3>\n

Nep\u0159edpokl\u00e1dejte, \u017ee m\u00e1 stupe\u0148 ochrany 70. Pro zaji\u0161t\u011bn\u00ed n\u00e1kladu v USA se norma 49 CFR 393.108 vztahuje na sva\u0159ovan\u00e9 ocelov\u00e9 \u0159et\u011bzy, jejich\u017e stupe\u0148 ochrany nebo nosnost (WLL) nelze pro \u00fa\u010dely WLL identifikovat jako stupe\u0148 ochrany 30. P\u0159ed p\u0159id\u011blen\u00edm vy\u0161\u0161\u00edho stupn\u011b ochrany po\u017e\u00e1dejte dodavatele o sledovatelnou identifikaci a \u00fadaje o produktu. Pravidla na jin\u00fdch trz\u00edch se mohou li\u0161it.<\/p>\n

Po\u010d\u00edt\u00e1 se p\u0159\u00edm\u00e9 uv\u00e1z\u00e1n\u00ed stejn\u011b jako \u0159et\u011bz, kter\u00fd p\u0159ech\u00e1z\u00ed p\u0159es n\u00e1klad?<\/h3>\n

Ne. Podle pravidel FMCSA pro zaji\u0161t\u011bn\u00ed n\u00e1kladu p\u0159isp\u00edv\u00e1 \u00favazek vedouc\u00ed od kotevn\u00edho bodu vozidla k bodu uchycen\u00ed n\u00e1kladu polovinou sv\u00e9 nosnosti (WLL) k celkov\u00e9 nosnosti (WLL). \u00davazek vedouc\u00ed od jednoho kotevn\u00edho bodu vozidla nad, skrz nebo kolem n\u00e1kladu k jin\u00e9mu kotevn\u00edmu bodu vozidla p\u0159isp\u00edv\u00e1 k pln\u00e9 nosnosti (WLL). Jedn\u00e1 se o v\u00fdpo\u010det celkov\u00e9 kapacity pro krytou p\u0159epravu v USA, nikoli o zp\u016fsob, jak zv\u00fd\u0161it hodnocen\u00ed jednotliv\u00e9ho \u0159et\u011bzce. Zkontrolujte si minim\u00e1ln\u00ed po\u010det \u00favazk\u016f a jak\u00e9koli pravidlo specifick\u00e9 pro n\u00e1klad samostatn\u011b.<\/p>\n

Z\u00e1v\u011bre\u010dn\u00e1 kontrola p\u0159ed objedn\u00e1n\u00edm<\/h2>\n

U p\u0159epravn\u00edho \u0159et\u011bzu t\u0159\u00eddy 70 si ov\u011b\u0159te postupn\u011b t\u0159i v\u011bci: \u0159et\u011bz je ur\u010den pro v\u00e1\u0161 \u00fakol zaji\u0161t\u011bn\u00ed n\u00e1kladu, jeho velikost a nosnost jsou zdokumentov\u00e1ny pro dan\u00fd produkt a ka\u017ed\u00fd h\u00e1k, spojka, pojivo a kotvic\u00ed bod pasuje a m\u00e1 vhodnou jmenovitou hodnotu. Sd\u011blte sv\u00e9mu dodavateli po\u017eadovanou d\u00e9lku \u0159et\u011bzu, jmenovitou velikost, po\u017eadavky na uchycen\u00ed \u010dl\u00e1nk\u016f, koncov\u00e9 kov\u00e1n\u00ed, povrchovou \u00fapravu a c\u00edlov\u00fd trh. To usnadn\u00ed ov\u011b\u0159en\u00ed sestavy, kterou obdr\u017e\u00edte, a vyhnete se tomu, abyste se standardn\u00ed referen\u010dn\u00ed tabulkou zach\u00e1zeli jako se z\u00e1rukou specifickou pro dan\u00fd produkt.<\/p>","protected":false},"excerpt":{"rendered":"

You may have a Grade 70 chain with a clear working load limit, yet still be unsure whether the hooks and binder make it suitable […]<\/p>\n","protected":false},"author":1,"featured_media":19386,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-19353","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"acf":[],"yoast_head":"\nGrade 70 Transport Chain: Sizes, WLL, Hooks & Safety<\/title>\n<meta name=\"description\" content=\"Check Grade 70 transport chain sizes, reference WLLs, hooks, binders, and cargo securement limits before buying a complete tie-down assembly.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tuohaihardware.com\/cs\/dopravni-retez-tridy-70\/\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Grade 70 Transport Chain: Sizes, WLL, Hooks & Safety\" \/>\n<meta property=\"og:description\" content=\"Check Grade 70 transport chain sizes, reference WLLs, hooks, binders, and cargo securement limits before buying a complete tie-down assembly.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/tuohaihardware.com\/cs\/dopravni-retez-tridy-70\/\" \/>\n<meta property=\"og:site_name\" content=\"Tuohai Hardware\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-06T04:07:25+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-09T08:28:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/10\/g70-chain-link-grade-marking-v1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"700\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Tuohai\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Napsal(a)\" \/>\n\t<meta name=\"twitter:data1\" content=\"Tuohai\" \/>\n\t<meta name=\"twitter:label2\" content=\"Odhadovan\u00e1 doba \u010dten\u00ed\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minut\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/grade-70-transport-chain\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/grade-70-transport-chain\\\/\"},\"author\":{\"name\":\"Tuohai\",\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/#\\\/schema\\\/person\\\/34b57872ffc12f32410038be1d3a4574\"},\"headline\":\"Grade 70 Transport Chain: Specifications, Sizes, Safety Tips, and Attachments\",\"datePublished\":\"2026-10-06T04:07:25+00:00\",\"dateModified\":\"2026-10-09T08:28:31+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/grade-70-transport-chain\\\/\"},\"wordCount\":1455,\"publisher\":{\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/grade-70-transport-chain\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/tuohaihardware.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/g70-chain-link-grade-marking-v1.jpg\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"cs\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/grade-70-transport-chain\\\/\",\"url\":\"https:\\\/\\\/tuohaihardware.com\\\/grade-70-transport-chain\\\/\",\"name\":\"Grade 70 Transport Chain: Sizes, WLL, Hooks & Safety\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/grade-70-transport-chain\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/grade-70-transport-chain\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/tuohaihardware.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/g70-chain-link-grade-marking-v1.jpg\",\"datePublished\":\"2026-10-06T04:07:25+00:00\",\"dateModified\":\"2026-10-09T08:28:31+00:00\",\"description\":\"Check Grade 70 transport chain sizes, reference WLLs, hooks, binders, and cargo securement limits before buying a complete tie-down assembly.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/grade-70-transport-chain\\\/#breadcrumb\"},\"inLanguage\":\"cs\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/tuohaihardware.com\\\/grade-70-transport-chain\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"cs\",\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/grade-70-transport-chain\\\/#primaryimage\",\"url\":\"https:\\\/\\\/tuohaihardware.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/g70-chain-link-grade-marking-v1.jpg\",\"contentUrl\":\"https:\\\/\\\/tuohaihardware.com\\\/wp-content\\\/uploads\\\/2026\\\/10\\\/g70-chain-link-grade-marking-v1.jpg\",\"width\":1200,\"height\":700,\"caption\":\"Close-up of the G70 marking stamped on a chain link\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/grade-70-transport-chain\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/tuohaihardware.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Grade 70 Transport Chain: Specifications, Sizes, Safety Tips, and Attachments\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/#website\",\"url\":\"https:\\\/\\\/tuohaihardware.com\\\/\",\"name\":\"Tuohai Hardware\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/tuohaihardware.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"cs\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/#organization\",\"name\":\"Tuohai Hardware\",\"url\":\"https:\\\/\\\/tuohaihardware.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"cs\",\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/tuohaihardware.com\\\/wp-content\\\/uploads\\\/2024\\\/02\\\/cropped-TUOHAI-LOGO.png\",\"contentUrl\":\"https:\\\/\\\/tuohaihardware.com\\\/wp-content\\\/uploads\\\/2024\\\/02\\\/cropped-TUOHAI-LOGO.png\",\"width\":180,\"height\":180,\"caption\":\"Tuohai Hardware\"},\"image\":{\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/tuohaihardware.com\\\/#\\\/schema\\\/person\\\/34b57872ffc12f32410038be1d3a4574\",\"name\":\"Tuohai\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"cs\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/12d6eb301d472370b14bfdf8b90cc6838fda6be35197198b89c0496381820ee6?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/12d6eb301d472370b14bfdf8b90cc6838fda6be35197198b89c0496381820ee6?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/12d6eb301d472370b14bfdf8b90cc6838fda6be35197198b89c0496381820ee6?s=96&d=mm&r=g\",\"caption\":\"Tuohai\"},\"url\":\"https:\\\/\\\/tuohaihardware.com\\\/cs\\\/author\\\/dp_admin\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Dopravn\u00ed \u0159et\u011bz t\u0159\u00eddy 70: Rozm\u011bry, nosnost, h\u00e1ky a bezpe\u010dnost","description":"P\u0159ed zakoupen\u00edm kompletn\u00ed upev\u0148ovac\u00ed sestavy zkontrolujte rozm\u011bry transportn\u00edch \u0159et\u011bz\u016f t\u0159\u00eddy 70, referen\u010dn\u00ed nosnost, h\u00e1ky, pojistn\u00e9 prost\u0159edky a limity zaji\u0161t\u011bn\u00ed n\u00e1kladu.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/tuohaihardware.com\/cs\/dopravni-retez-tridy-70\/","og_locale":"cs_CZ","og_type":"article","og_title":"Grade 70 Transport Chain: Sizes, WLL, Hooks & Safety","og_description":"Check Grade 70 transport chain sizes, reference WLLs, hooks, binders, and cargo securement limits before buying a complete tie-down assembly.","og_url":"https:\/\/tuohaihardware.com\/cs\/dopravni-retez-tridy-70\/","og_site_name":"Tuohai Hardware","article_published_time":"2026-10-06T04:07:25+00:00","article_modified_time":"2026-10-09T08:28:31+00:00","og_image":[{"width":1200,"height":700,"url":"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/10\/g70-chain-link-grade-marking-v1.jpg","type":"image\/jpeg"}],"author":"Tuohai","twitter_card":"summary_large_image","twitter_misc":{"Napsal(a)":"Tuohai","Odhadovan\u00e1 doba \u010dten\u00ed":"8 minut"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/tuohaihardware.com\/grade-70-transport-chain\/#article","isPartOf":{"@id":"https:\/\/tuohaihardware.com\/grade-70-transport-chain\/"},"author":{"name":"Tuohai","@id":"https:\/\/tuohaihardware.com\/#\/schema\/person\/34b57872ffc12f32410038be1d3a4574"},"headline":"Grade 70 Transport Chain: Specifications, Sizes, Safety Tips, and Attachments","datePublished":"2026-10-06T04:07:25+00:00","dateModified":"2026-10-09T08:28:31+00:00","mainEntityOfPage":{"@id":"https:\/\/tuohaihardware.com\/grade-70-transport-chain\/"},"wordCount":1455,"publisher":{"@id":"https:\/\/tuohaihardware.com\/#organization"},"image":{"@id":"https:\/\/tuohaihardware.com\/grade-70-transport-chain\/#primaryimage"},"thumbnailUrl":"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/10\/g70-chain-link-grade-marking-v1.jpg","articleSection":["Blog"],"inLanguage":"cs"},{"@type":"WebPage","@id":"https:\/\/tuohaihardware.com\/grade-70-transport-chain\/","url":"https:\/\/tuohaihardware.com\/grade-70-transport-chain\/","name":"Dopravn\u00ed \u0159et\u011bz t\u0159\u00eddy 70: Rozm\u011bry, nosnost, h\u00e1ky a bezpe\u010dnost","isPartOf":{"@id":"https:\/\/tuohaihardware.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/tuohaihardware.com\/grade-70-transport-chain\/#primaryimage"},"image":{"@id":"https:\/\/tuohaihardware.com\/grade-70-transport-chain\/#primaryimage"},"thumbnailUrl":"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/10\/g70-chain-link-grade-marking-v1.jpg","datePublished":"2026-10-06T04:07:25+00:00","dateModified":"2026-10-09T08:28:31+00:00","description":"P\u0159ed zakoupen\u00edm kompletn\u00ed upev\u0148ovac\u00ed sestavy zkontrolujte rozm\u011bry transportn\u00edch \u0159et\u011bz\u016f t\u0159\u00eddy 70, referen\u010dn\u00ed nosnost, h\u00e1ky, pojistn\u00e9 prost\u0159edky a limity zaji\u0161t\u011bn\u00ed n\u00e1kladu.","breadcrumb":{"@id":"https:\/\/tuohaihardware.com\/grade-70-transport-chain\/#breadcrumb"},"inLanguage":"cs","potentialAction":[{"@type":"ReadAction","target":["https:\/\/tuohaihardware.com\/grade-70-transport-chain\/"]}]},{"@type":"ImageObject","inLanguage":"cs","@id":"https:\/\/tuohaihardware.com\/grade-70-transport-chain\/#primaryimage","url":"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/10\/g70-chain-link-grade-marking-v1.jpg","contentUrl":"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2026\/10\/g70-chain-link-grade-marking-v1.jpg","width":1200,"height":700,"caption":"Close-up of the G70 marking stamped on a chain link"},{"@type":"BreadcrumbList","@id":"https:\/\/tuohaihardware.com\/grade-70-transport-chain\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/tuohaihardware.com\/"},{"@type":"ListItem","position":2,"name":"Grade 70 Transport Chain: Specifications, Sizes, Safety Tips, and Attachments"}]},{"@type":"WebSite","@id":"https:\/\/tuohaihardware.com\/#website","url":"https:\/\/tuohaihardware.com\/","name":"Hardware Tuohai","description":"","publisher":{"@id":"https:\/\/tuohaihardware.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/tuohaihardware.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"cs"},{"@type":"Organization","@id":"https:\/\/tuohaihardware.com\/#organization","name":"Hardware Tuohai","url":"https:\/\/tuohaihardware.com\/","logo":{"@type":"ImageObject","inLanguage":"cs","@id":"https:\/\/tuohaihardware.com\/#\/schema\/logo\/image\/","url":"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2024\/02\/cropped-TUOHAI-LOGO.png","contentUrl":"https:\/\/tuohaihardware.com\/wp-content\/uploads\/2024\/02\/cropped-TUOHAI-LOGO.png","width":180,"height":180,"caption":"Tuohai Hardware"},"image":{"@id":"https:\/\/tuohaihardware.com\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/tuohaihardware.com\/#\/schema\/person\/34b57872ffc12f32410038be1d3a4574","name":"Tuohai","image":{"@type":"ImageObject","inLanguage":"cs","@id":"https:\/\/secure.gravatar.com\/avatar\/12d6eb301d472370b14bfdf8b90cc6838fda6be35197198b89c0496381820ee6?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/12d6eb301d472370b14bfdf8b90cc6838fda6be35197198b89c0496381820ee6?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/12d6eb301d472370b14bfdf8b90cc6838fda6be35197198b89c0496381820ee6?s=96&d=mm&r=g","caption":"Tuohai"},"url":"https:\/\/tuohaihardware.com\/cs\/author\/dp_admin\/"}]}},"_links":{"self":[{"href":"https:\/\/tuohaihardware.com\/cs\/wp-json\/wp\/v2\/posts\/19353","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tuohaihardware.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tuohaihardware.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tuohaihardware.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tuohaihardware.com\/cs\/wp-json\/wp\/v2\/comments?post=19353"}],"version-history":[{"count":3,"href":"https:\/\/tuohaihardware.com\/cs\/wp-json\/wp\/v2\/posts\/19353\/revisions"}],"predecessor-version":[{"id":19397,"href":"https:\/\/tuohaihardware.com\/cs\/wp-json\/wp\/v2\/posts\/19353\/revisions\/19397"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tuohaihardware.com\/cs\/wp-json\/wp\/v2\/media\/19386"}],"wp:attachment":[{"href":"https:\/\/tuohaihardware.com\/cs\/wp-json\/wp\/v2\/media?parent=19353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tuohaihardware.com\/cs\/wp-json\/wp\/v2\/categories?post=19353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tuohaihardware.com\/cs\/wp-json\/wp\/v2\/tags?post=19353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}