... A106 GR. A , GR. B, GR. C DIN 162 St 37.0, St 44.0, St 52. ... 8, St45.8, 17Mn4, 19Mn5, 15Mo3, 13CrMo44 DIN 2391 cold drawn seamless precision pipes Material: St35, St45, St52 ... DIN 2393 seamless steel pipes for structural purpose Material: ... 12m,customized Standards:API 5L,API5CT,ASTM A106,ANSI,ISO9001,DIN,EN,JIS. 1. Specification: SM400A, SM400B, SM490A, ...