Kev tsim khoom thiab kev siv cov hlab ntsha siab yog ua raws li kev tswj hwm nruj thiab cov qauv kev cai. Cov qauv no xyuas kom meej tias cov hlau ua tau raws li qhov xav tau ntawm cov khoom siv kho tshuab, tiv thaiv corrosion, thiab weldability.
Cov cwj pwm tseem ceeb
Kev lag luam tshwj xeeb yam ntxwv
| Hom | Gnee |
|
Txuj |
DIN |
| Dav | 2001-3000 hli |
| Ntev | 6001-12000 hli |
| Invoicing | los ntawm theoretical hnyav |
Cim npe nrov: din 17155 siab nkoj phaj, Tuam Tshoj din 17155 siab nkoj phaj manufacturers, lwm tus neeg, Hoobkas