Dear Sir/Madam, We are the manufacturer &stock wholesalers of Carbon Steel/Alloy Steel/ Stainless Steel Butt Weld Pipe Fittings according to ASTM ANSI B16.9 as below: Stainless Steel Elbow: ASTM A403 WP Gr. 304, 304H, 316L, 317L, 904L Duplex Steel Elbow: ASTM A815, ASME SA815 S31803 Super Duplex...