1, oxygen cylinder valve 2, ISO Certificated 3, Tolerance:0.005~0.02mm ... :0.5~1020mm 5, Delivery:on time China OEM customized oxygen cylinder valve About usYaopeng was founded in 2005 as a leading ... :300T) Specification 1) Material: Steel, Brass, Copper, Stainless steel, Plastic, Aluminium, POM, Delrin, Titanium Alloy etc.2) Surface treatment:Zinc plating ...