Detailed Product Description API 5L LINE PIPEStandard: API 5L Gr.B C:0.12~0.37,Mn:1.2 max,P:0.03 max,S:0.03 max,Cr:0.25 max, Ni+V+Ti:0.15 max, Ni+V:0.03 max Our company is one of the largest seamless steel pipe manufactures in China.We are passed API 5L,API 5CT certification and ISO quality system certification.With good quality and competitive price we believe we can be your reliable supplier.