steel housing 1) Material: Grey/ductile iron,steel,steel alloy 2)weight from 0.01kg to 800kg 3) Surface finish:sandblasting ... Grey/ductile iron,steel,steel alloy, aluminum alloy,brass2) Product weight from 0.01kg to 800kg3) Applied software for specification drawings ... painting, powder coat zinc plating,hot galvanize6) Detailed products range: housing,valve parts, mechanism parts, auto parts steel ...