3/4'' Brass Gate Valve 1.Material: brass 2.Finish: Zinc plating, Nickel plating and chromate plating 3.ISO9001:2008 3/4'' Brass ... and forging machine, polishing equipment, etc.(4) Main inspection devices: digital projector, Rockwell hardness tester, hydraulic valve test bench, micrometer, thread ring ... Xishanqian village, Huanxiu street, Jimo, Qingdao, Shandong province, China 3/4'' Brass Gate Valve