npt stainless / carbon steel hydraulic hose plug adapters and fittings 4N

Proper installation, torque compliance, and regular inspection are key. Ruihua Hardware hydraulic connectors undergo pressure testing and quality inspection to ensure leak-free, reliable performance in heavy-duty hydraulic systems.

Absolutely. Ruihua Hardware offers OEM and customized fittings tailored to specific dimensions, thread types, and material requirements. Our engineering team supports prototype and small-batch production.

Yes. Ruihua Hardware adapters are manufactured according to international standards (SAE, ISO, DIN), ensuring compatibility with most major global hydraulic systems.

Regular inspection for leaks, corrosion, and wear is essential. Ruihua Hardware recommends cleaning fittings and applying anti-corrosion coating if necessary. Proper installation and torque settings also ensure safety and durability.