Seamless carton steel pipe

1.Standard:BS EN10296,BS4568,GB 13296-2007,API 5DP,16Mn,APIp110 2.Materail:10#20#45# 3.OD:5-1000mm 4.WallThinckness:1.5-100mm

Seamless steel pipe’s process:

Tube prototype — test — skin — test — heat — perforate — acid-washing — grinding — lubrication and drying — welding head — cold-drawing — solution treatment — acid-washing — Pickling passivation — test — cold rolling — deoiling — top crops — drying — inner-polishing — outer-polishing — test — identification — product packing.

Seamless carton steel pipe