Description

ERW steel pipe
1.OD:*******6mm
2.Thickness:***4mm
3.Material:Q**5B/Q**5B/L**5/L**0/L**0/L**5/L**5/*0#/API 5L.B/X*2/X*6/X*2/X*6/X*0/X*5/X*0,etc.
4.Standard:GB********1,GB***1.1,GB***1.2,API5L,API 5CT
5.Applying fields:offshore oil exploitation,vacuum distillation,three gorges,power station,west-east,chemical plant,etc.
the technical of "high frequency" longitudinal-seam welded steel pipes:
uncoiling*-leveling*-end cutting*-end shearing welding*-supercoil accumulator*-edge condition ing strip*- edge and body ultrasonic testing*-forming*-
forming*-electric induction welding*-ultrasonic testing for weld seam*-post annealing*-air cooling*-water colling*-sizing*-flying cut-off*-flush-out*-
cropping*-flatterning testing for pipe end visual and dimensional inspection*-weighing and measuring*-supercoil accumulator*-coating*-pipe-end prtector*-
bunding*-shipping