Welded steel pipes

Usage: used for low pressure liquid delivery, such as water, gas, and oil.

Process:
Erw (electric resistance welded)
Hfi (high frequency induction)
Efw(electric fusion welded tube)
Lsaw (longitudinal submerge-arc welded) uo(uoe)íórb(rbe)íójco(jcoe)
Dsaw (double submerged arc welded)
Saw (spiral welded)
Ssaw (spiral submerged-arc welded)

Quality standard:
Erw hfi , efw, lsaw, dsaw:
Gb/t3091 welded steel pipe for low pressure liquid delivery
Gb/t9711 petroleum and natural gas industries--steel pipe for pipelines
Is: 3589 steel tubes for water and sewage
Is : 1978-1982 steel tubes for use in transportation of oil; gas & petroleum products
Bs: 1387 steel tubes for use for water, gas, air and steam
Astm a53 standard specification for pipe, steel, black and hot-dipped, zinc-coated, welded and seamless
Din 2458 welded steel pipes and tubes
En10217 welded steel tubes for pressure purposes. Technical delivery conditions. Non-alloy steel tubes with specified room temperature properties
Api 5l line pipe


In bundle, or according to your requirement