hydraulic fitting 1.OEM service 2.ISO 9001:2008 certification hydraulic fittingAccording to customers detailed specificationdrawings or samples1.Materials: carbon ... brass, bronze, aluminum and aluminum casting ect.2.Standard: ASTM, SAE, BS. DIN, UNI3.Surface Treatments: sand blasted, painted, electrophoresis, ... , Threading, Burnishing, Slab Milling, Face Milling and End Milling hydraulic fitting