Hydraulic Hose Fittings Manufacturer & Factory in China

This document introduces Eaton Standard NB200 nut and NB300 front ferrule, core components of American JIC 37° Triple-Lok hydraulic tube fittings. NB200 is a hexagonal internally threaded nut (UNF fine thread, carbon/stainless steel) for torque transmission and tubing fixation. NB300 is a single front ferrule with a 37° cone and cutting edge, achieving sealing and gripping when tightened, with high-pressure and vibration resistance. It also covers size matching, comparisons with Metric 24° cone fittings, and key selection/installation tips for hydraulic, oil & gas, and marine applications. Read More »

For 5N series hydraulic transition bushings, the difference between "good" and "great" often comes from how they are made. At Yuyao Ruihua Hardware Factory, we put quality first. That’s why we make our bushings from solid bar stock, not cold-forged blanks. Here’s why our method is better.1. Process: Read More »

If you work in hydraulics, you know that crimping is the most critical part of making a hose assembly.At RUIHUA HARDWARE, we see too many failures caused by uneven crimping—and that’s a much bigger problem than it looks.  Read More »

At Yuyao Ruihua Hardware Factory, we specialize in the design, development, and manufacturing of high-performance hydraulic adapters crafted from premium 45# medium carbon steel. Our commitment to quality and precision engineering ensures that every fitting delivers exceptional durability, leak-free Read More »

Hydraulic systems are the lifeblood of critical machinery. The reliability of every hydraulic fitting directly impacts system safety and performance. During installation and maintenance, a deceptively simple question arises: When tightening a hydraulic fitting, should you trust the precise click of Read More »