In the high-stakes world of commercial transportation and industrial automation, the integrity of a single fitting can be the difference between operational excellence and catastrophic failure. Brass DOT (Department of Transportation) air brake fittings represent the pinnacle of safety standards for air brake systems. As a Global Leading Brass DOT Pipe Fittings Supplier, NHPC understands that these components are not mere commodities; they are critical safety devices regulated by FMVSS 106 and SAE J2494 standards.
The global market is witnessing a decisive shift from traditional compression fittings to advanced Push-to-Connect (PTC) brass fittings. This trend is driven by three primary factors:
Procurement directors at global automotive and industrial firms are no longer just looking for the lowest price. Their "User Intent" is focused on Supply Chain Predictability and Material Traceability. Modern procurement requires partners who can provide CA604 or CA360 brass certifications, ensuring the absence of impurities that cause stress corrosion cracking. NHPC fulfills this demand through rigorous raw material auditing and 100% leak testing protocols.
At Nuoheng Pneumatic Machinery (NHPC), our facility utilizes high-precision CNC lathes that ensure tolerances within ±0.01mm. This automation reduces human error and guarantees that every DOT fitting meets SAE thread specifications perfectly, every single time.
By managing everything from raw material forging to surface treatment (high-precision nickel or chrome plating) in-house, we eliminate the volatility of third-party dependencies, offering Supply Chain Resilience during global market fluctuations.
Our commitment to "Industry 4.0" involves integrating vision-based AI inspection systems that detect microscopic defects in O-rings and brass bodies, ensuring 0.0% failure rates for safety-critical air brake applications.
Years of Pneumatic Expertise
Technical Staff & Engineers
New Product Innovations Annually
Serving 50+ Countries
Our DOT-certified brass fittings are the backbone of air brake systems in Class 8 trucks across North America and Europe, providing reliable seals in temperatures ranging from -40°C to +100°C.
With the rise of "New Energy," NHPC provides flame-resistant and flame-retardant pipe fittings designed specifically for the fire protection systems of large-scale lithium-ion battery containers.
Compact PL and PC series fittings allow for tight bend radii and 360° rotation, making them ideal for the pneumatic actuators in automated assembly lines and robotic arms.
Welcome to NHPC, a leading manufacturer in the pneumatic industry with a rich history spanning over 15 years. Our journey began with a simple but powerful vision: to revolutionize the pneumatic industry by delivering high-quality, innovative, and reliable products. Today, we specialize in the design, development, and manufacturing of a comprehensive range of pneumatic products including Brass DOT Air Brake Fittings, push-in fittings, and custom pneumatic systems.
Our expertise allows us to maintain strict quality control at every stage—from raw material selection to final product assembly. We value our customers' feedback and use it to continuously improve our offerings, ensuring we remain at the forefront of the industry.




Explore our full range of pneumatic push-in and push-on fittings.