 High Quality      Large Stock and Full Category      Quick Response      Customizable      Fast Delivery

Reliable Materials: We rigorously select our raw material suppliers and accept only high quality carbon steels with high intensity and corrosive resistance performance. We select FKM or NBR O-rings and sealings with certified supply chain include ISO 9001-audited mills to ensure the sealing under high temperature or pressures. Each metal billet undergoes spectrometer testing for tensile strength (≥600MPa), yield stress(≥355), elongation(≥16) and reduction(≥40) before production.

Engineered Manufacturing: Every hydraulic fitting is precision-machined using CNC lathe machines for thread and inside bore to ensure the tolerance ±0.1 mm and validated against Parker Hannifin and Eaton's benchmarks. For hexagon or flange clamp we have machines for customized process.

Industrial Application: We guarantee our products are high quality and proven by statistics:
Salt spray test: White zinc coating(Cr3+)(8-12μm) no white rust after 120 hours and no red rust after 300 hours; Zinc-Nickle alloy coating（8-10μm）no white rust after 480 hours and no red rust after 720 hours
Temperature adaptability: Our products are fit for temperature from -40°C to 120°C
All data is recorded and accessible to clients.

Heavy-Duty Applications: Proven in extreme conditions:
Mining: anti-explosion and impact performance for Sunward mining machinery
Construction: 10,000-hour service life in LiuGong excavators
Agriculture: excellent corrosion resistance performance for Zoomlion agricultural machinery

We receive many customized orders every day and you could be next. Contact us today.

Each hydraulic fitting must pass 3 quality test before delivering to clients. First they need to pass the multiple tests including hardness test and pressure test.
Then they will be sent to check their tolerance.
Finally they will be sent to evaluate their outer and inner performance.
Our strict quality test procedure ensures our products with high quality and met the needs of our clients.

‌Hydraulic adapter is a fitting used to connect two pipes or fittings of different models, specifications or materials. Its main function is to transition between two fittings that need to be connected but cannot be directly connected, so as to achieve the purpose of connection. Hydraulic adapters are widely used in hydraulic systems, electrical appliances, water pipes and other pipeline systems, especially in complex pipe networks with different interface standards.

Hydraulic adapters are mainly used to solve the problem of interface mismatch, and are commonly found in complex pipe networks such as hydraulic systems, cooling systems, and oil supply systems. Due to the wide variety of pipes and different interface standards, the application of hydraulic fittings is relatively widespread. In plastic inspection wells, hydraulic fittings are also called inner and outer diameter conversion fittings, which are used to connect pipes of different diameters.

The types and specifications of hydraulic adapters depend on specific application requirements. For example, in hydraulic systems, hydraulic adapters can connect pipes of different models, specifications or materials; in plastic inspection wells, hydraulic adapters are used to connect pipes of different diameters. In addition, hydraulic adapters are usually made of materials such as stainless steel, copper, steel, cast iron, PVC, etc. to adapt to different application scenarios.

At Haodema, every hydraulic fitting undergoes rigorous electroplating treatment to ensure excellent corrosion resistance and long service life. We use advanced electroplating processes, including zinc plating, nickel plating and other special coating technologies, to form a dense and uniform protective layer on the surface of the product, effectively resisting the erosion of moisture, salt spray and chemicals.

Through precise current control and multi-layer plating process, we ensure that the coating has strong adhesion and high hardness, and maintains excellent protective performance even under high pressure and high wear conditions. Each batch of products undergoes multiple quality inspection processes such as salt spray testing and film thickness testing to ensure compliance with international standards. Haodema's electroplating technology not only improves the appearance and texture of the product, but also gives it stronger environmental adaptability, making our products more reliable and longer-lasting.

The excellent performance of Haodema hydraulic fittings begins with high-quality roughcast forging technology. We use high-strength alloy steel and precision forging technology to make the internal grain structure of the metal denser, greatly improving the mechanical strength and impact resistance of the product.

During the forging process, we use advanced die forging and cold heading technology to ensure that the roughcast size is accurate and free of internal defects, laying a solid foundation for subsequent machining. Each forged roughcast undergoes rigorous flaw detection and mechanical property testing to ensure that its hardness and toughness reach the industry-leading level.

Haodema's forging process not only optimizes material utilization, but also gives the product higher reliability and durability. From raw materials to finished products, we forge every detail with ingenuity, just to deliver high-quality products to our customers.

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info@chinahdm.com