... seamless, forged elbow 2. pipe fitting 3. carbon, stainless steel, alloy steel 4. ASME, DIN, JIS, GB WeldSeamless Nominal SizeDN250-DN1800DN15- DN700 ... DIN28011 SGPJIS B2313 ENEN10253-1, EN10253-2 Material ASTMCarbon steel: A234 WPB Stainless steel: A403 WP304, A403 WP304L, A403 WP316, A403 ... reducers, and caps from D25mm to D820mm 4, Pipe fitting made of steel plate from D630mm to D3320mm 5, Socket ...