Hydraulic hose fittings have Metric Standard, American Standard, British Standard, Interlock hose fittings, Double connectors, Reuseable fittings, etc. Application: Automobile, engineering Machinery, Lathe, Machinery, Metallurgy, Petroleum, mine. Equipments: CNC lathe, automatic lathe, hand lathe grinder, thread rolling machine, tapping drilling machine etc. Surface treatment: Color or White Zinc plated.