... -seam Inside nomianal diameterDN250-DN1600DN15-DN800Thickness2.0-50mm Bending radiusR=1.5D-R=1D Angle of bend45°,90°,180° Liaocheng Tianrui steel ... steel pipe and fittings,like 45deg,90deg,180deg,L/R OR S/R,bend ,equal or reducing tee, CON reducer, ECC reducer ... ,A106,API5LSTANDARD: ASTM/ANSI,DIN,ISO,GB,JIS,BS OTHERS:1. Special design available according to requirement2. All the production process ...