 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 valves‌ are control components in fluid delivery systems, mainly used to open and close pipelines, control flow direction, and adjust and control parameters of the delivery medium (such as temperature, pressure and flow). Hydraulic Valves have functions such as shutoff, regulation, diversion, backflow prevention, pressure stabilization, diversion or overflow pressure relief. ‌

Hydraulic valves can be classified according to different standards:

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.

+86-15990630008

info@chinahdm.com