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ASTM A403 WP904L ELBOW product specifications 1.MATERIL: A234-WPB.A420-WPL6.A234-WP12.A234-WP11.A234-WP5.A403-WP304.A403-WP304L.A403-WP316.A403-WP316L.A403-WP904L 2.SIZE: 1/2"-48",DN15-DN1200 3...