... -80mm,length:3-12m Grade:A213 ,10# ,20# ,45# ,Q345, Q235 , standard:AISI,API,JIS Seamless steel pipe1Type: seamless pipes, welded pipes ... finish: annealing/polishing4 Grades: A213,10#,20#,45#,Q195, Q235,Q345 ,etc.6 Applications: Chemical Industry, Petroleum, Medicine, Food, Machinery, Construction ...