seamless steel pipe Size:OD:20.34-610MM,W.T:5- ... ,20# ,45# ,Q345, Q235 , standard:AISI,API,JIS Seamless steel pipe1Type: seamless pipes, welded pipes, welded pipes, rectangular pipes, square ... Q345 ,etc.6 Applications: Chemical Industry, Petroleum, Medicine, Food, Machinery, Construction, etc.7.About us : We are Tianjin Hong-Peng ... to contact us for more professional information. seamless steel pipe