ZheJiang Ningsheng Steel Pipe Co.,Ltd is committed to producing pressure steel pipe in China.（LSAW,EFW)
The primary products are LSAW which the outside diameters are range from 16"-150",and the wall thickness from 5mm-100mm.These used materials are carbon steel,alloy steel,oil-pipe steel,stainless steel,and so on.
Performed standards are API 5L，GB\9711.1-1997,GB\9711.2-1997，DIN，ASTM，ASME,and so on.
We have 15 years of experience in producing LSAW.
I 'd like to know whether you are interested in our products of primary.
If do! I'd like to give you my help! More,welcome to come order or visit our company.
