... leading butt welded carbon steel stainless steel elbow from China Welding lineNo-seam Inside nomianal ... Bending radiusR=1.5D-R=1D Angle of bend45°,90°,180° Liaocheng Tianrui steel tube Co., Ltd. ... quality control and service.Product/Service (We Sell):Elbow,tee,cross,flange,steel flange,large size flange ... ,large size elbow,reducer,weldolet,coupling,steel pipe cap,seal ...