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Materials: Carbon steel: ASTM A234 WPB, WPC, ASTM A420 WPL1, WPL3, WPL6, WPHY-42/46/52/56/60/65/70 Stainless steel: ASTM A403 WP304/304L, WP316/316/L, WP321, WP347 and WPS31254 Alloy steel: ASTM A234 ...