... .Standard:ASME,BS,GOST,eg seamless pipe fittings,45/90/180 degree elbow sizeSeamless:from 1/2" to 24"Welded:from ... customer requirements)degree22.5 deg, 30deg,45 deg,90 deg,180 deg, 1.0D, 1.5D, 2.0D, 2.5D, 3D ... Stainless Steel Elbow Chemical Analysis seamless pipe fittings,45/90/180 degree elbow