... → Grade B, SS330,SPHC, S185Q215 → Grade C,CS Type B,SS330, SPHCQ235 → Grade D,SS400,S235JR,S235JO ... Fusion Welded (EFW)Double Submerged Arc Welded (DSAW)TypeWeldedWelded Line TypeLongitudinalSection ShapeRoundInspectionWith Hydraulic Testing, Eddy Current , Infrared TestPackage1. ... customers' needs with the satisfied service and high standard quality.And our company have own exporting authority. ...