API 5CT/API 5L/ISO9001 manufacture of Seamless steel pipes forautomotive axle housing[ASTM 1345,ASTM 5140,41Gr4] API 5CT/API 5L/ISO9001 ... 1629 ST45,DIN1626 ST37,5>10#,20#,37Mn5,36Mn2V Other steel grade is available as per clients requirements. Ordinary Sizes: ... If you are interested in our products.ContactGraceTianjin Jingtong Seamless Steel pipe Co.,Ltd.Address: 31#,2nd RD,Xiaozhan Development Zone ...