Our company is a leading manufacturer of seamless steel pipes, high pressure boiler seamless steel pipes, alloy seamless steel tubes, fluid seamless steel pipes and fertilizer use seamless steel pipes. At the same time, our company annually sells the seamless steel pipes of Ye Gang, Anshan Iron and Baotou Steel. Our company has the seamless steel pipe stock of Bao Steel, Baotou Steel and Anshan Iron. Standing Materials: 20#, 45#, 16Mn, 27SiMn of 12Cr1MoV, 15CrMo alloy pipes (GB6479-2000) and ...