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20# elbow product specifications 1.Size: 5"-62" Inch, DN15-DN1480 Wall thickness: Sch5-Sch160 XXS 2.Material: Carbon steel: ASTM A234 WPB, WPC, ASTM A420 WPL1, WPL3, WPL6, WPHY42, 46, 52, 56, 60, 65, ...