... copper 2.Technics-Hot punchining,CNC machining 3.ISO9001:2008 Oil and gas pipe fitting1. Product Introduction Item DescriptionNameCNC machining part: Copper ... tester, hydraulic valve test bench, micrometer, thread ring gauge and plug gauge and other regular gauges.(5)Certificate: SGS ISO 9001:2008 ... : Xishanqian, Huanxiu Sub-district, Jimo city,Qingdao,Shandong province,China Oil and gas pipe fitting