Tianjin Sanjuyuan Trade Co., Ltd is a famous trading company which specializes in high quality seamless steel pipes,alloy steel pipes,stainless steel pipes ,alloy steel round bar and alloy steel plate. For instance,petroleum line pipe,casting pipe,high pressure boiler steel pipe,liquid steel pipe, geological steel pipe, hydraulic prop pipe and other kinds of alloy steel pipe .We can produce some kinds of seamless steel pipe of low price and also the agent of TPCO,BAOSTEEL,TISCO and some other ...