Kev tsim cov loj-calibe submerged arc vuam ncaj seam steel yeeb (Jcoe Txheej txheem)
Production Caliber: φ406mm-φ142 hli
Ntau lawm Thickness: 7 hli -50 hli
Cov Qauv Ntau Lawm thiab Cov Khoom Siv
GB / T9711 / API5L:
L245 / gr . b rau l485 / x70 PSL1 / 2
ASTM A671 / 2:
Gr .60 / 65/70 cl 10- cl33
en 10217-5}: p235gh
En {{{{0}}} / 2: s355j0h / j2h
ASTM A691:
1-1} / 4Cr{{02-1 / 4cr cl 10- cl33
Acid-resistant, tsawg-kub, kub-kho cov hlau tubing
