RUIHUA HARDWARE manufactures SAE J518 / ISO 6162 flange clamps in two types: FL-W & FS-W whole-type and FL & FS split-type. L-Series rated 3000 PSI, S-Series 6000 PSI, covering 1/2" to 3" bore sizes. Carbon steel body, zinc plating, salt-spray ≥96h. Factory direct, custom sizes available, global shipping. Request a quote.

This article introduces the STU Series Bi-Directional Hydraulic Throttle Valve (Speed Control Valve) from RUIHUA HARDWARE, a versatile inline flow control solution for industrial hydraulic systems. Featuring an integrated check valve, infinite manual adjustment, and durable construction rated for high working pressures, these valves provide precise bi-directional speed regulation for cylinders, motors, and machinery.

Manufactured by RUIHUA HARDWARE, this sanitary 90° elbow features a standard tri-clamp ferrule on one end and a multi-ribbed hose barb on the other, designed to connect flexible hoses to sanitary piping systems. It is available in mirror polished (for high-hygiene food, beverage, and pharmaceutical applications) and matte brushed (for durable industrial use) finishes, crafted from premium 304 or 316L stainless steel. The smooth flow path minimizes turbulence, while the one-piece forged construction ensures reliable, leak-proof performance in fluid transfer systems.

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.

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.