... 2'' Brass Ball Valve 1.Material: brass 2.Finish: Zinc plating, Nickel plating and chromate plating 3.ISO9001:2008 Brass Ball Valve1. Product ... Main inspection devices: digital projector, Rockwell hardness tester, hydraulic valve test bench, micrometer, thread ring gauge and plug gauge and ... 15066256002Address: Xishanqian village, Huanxiu street, Jimo, Qingdao, Shandong province, China Brass Ball Valve