threaded pipe/tube,steel pipe,aluminum pipe 1):ROHS approved 2):Material:mild steel, aluminum 6063 3):High-density threaded pipe/tube,steel pipe,aluminum pipe 1.material: Aluminum , mild steel;2.surface treatment: Zinc plated, anodize , electroplate;3.package: 200 pcs/polybag, 2,000 pcs/carton;4.material certificate, test report and surface treatment report available;5.tolerance: 0.01 mm;6. ...