copper pipe sleeve 1.Material: copper/brass 2.Weight:270g/150g 3. ... 4.Tolerance:+/-0.05mm High quality cnc machining superior copper pipe sleeve produced by clients' drawingsOur Advantages :Over 12 years experienceHigh ... ) Material:Steel, Brass, Copper, Stainless steel, Plastic, Aluminium POM, Delrin, Titanium Alloy etc.2) Surface treatment:Zinc plating, Anodization, Chemical fim ...