... nomianal diameterDN250-DN1600DN15-DN800Thickness2.0-50mm Bending radiusR=1.5D-R=1D Angle of bend45°,90°,180° Liaocheng Tianrui steel tube ... carbon steel pipe and fittings,like 45deg,90deg,180deg,L/R OR S/R,bend ,equal or reducing tee, CON reducer, ECC reducer ...