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Type: Pipe Coupling Materials: Carbon steel: ASTM A234 WPB, WPC, ASTM A 420 WPL 1, WPL3, WPL6 Stainless steel: ASTM A403 WP304/WP304L/WP316/WP316L/WP321 Wall Thickness: SCH5 to SCH160 Size: 1/2 to 72 ...