... ,GB,ISO material:API 5L, A53,A106,A333 GR6,Q235,Q345 API tube SSAW (Spiral Submerged-arc Welded) Quality standard: API 5L Gas and petroleum ... 1626, DIN 2460,TS1997, UNI 6363, AWWA C-200 Steel Grade:Q195, Q215, Q235, Q275, Q295, Q345, 08F, 08, 08AL, 08F ... ,St37, St44, ST52ASTM A 53: Gr. A, Gr B, Gr C, Gr.DAPI 5L: A, B, X42, X46, X52, X56, X60, X65 X70GB ...