1. weld, seamless, forged elbow 2. pipe fitting 3. carbon, stainless steel, alloy steel 4. ASME, DIN, JIS, GB WeldSeamless Nominal SizeDN250-DN1800DN15 ... 10D Bending Angle45°, 90° , 180° Standard ASMEANSI B16.9, ANSI B16.28, MSS SP75 DINDIN2605, DIN2615, DIN2616, DIN2617, DIN28011 ... , reducers, and caps from D25mm to D820mm 4, Pipe fitting made of steel plate from D630mm to D3320mm 5, Socket welding ...