API muab welded kab yeeb nkab. Cov kav dej welded yog tsim los ntawm kev koom nrog steel phaj lossis coils siv cov txheej txheem vuam siab heev. Cov kav dej no tseem raug tswj xyuas nruj kom paub meej tias lawv muaj kev ntseeg siab thiab ua haujlwm tau zoo.
Cov cwj pwm tseem ceeb
Kev lag luam tshwj xeeb yam ntxwv
| Hom | Gnee |
|
Alloy Los Tsis |
Yog Alloy |
| Txuj | ASTM |
| Qib | A106B A53 |
| Lub sij hawm xa tuaj | 8-14 hnub |
Cim npe nrov: api roj yeeb nkab gs tisi ntawv pov thawj 6m 12m muaj, Tuam Tshoj api roj yeeb nkab gs tisi ntawv pov thawj 6m 12m muaj manufacturers, lwm tus neeg, Hoobkas