Forged Cold Heading Steel Hex Hose Barb Fitting

Forged Cold Heading Steel Hex Hose Barb Fitting from Qimao Metal Manufacture, and the cold heading process begins with high-quality steel wire, fed into a multi-station former running at 60-80 parts per minute. The material displaces rather than cuts, which preserves continuous grain flow along the hex flats and barb contours—no weak spots hiding at the root of each serration. We follow with a secondary shaving operation to hold the barb O.D. within +/- 0.002 inches, ensuring every hose slides on with consistent interference. The hex body gets a light oil dip after forming to resist rust during storage. Burrs are shaved at the barrel ends, so your assembly line won't waste time deburring. Hardness runs 72-85 HRB, yielding enough spring-back to maintain clamping pressure without crushing thinner wall hoses. Dimensional tolerances meet custonized for barb dimensions and SAE J514 for hex configurations, making these fittings suitable for 1-wire braid and textile-reinforced hose constructions.

Product Parameter (Specification)

Product Feature

• Cold-Forged Grain Flow: Unlike fittings machined from bar stock, our cold-heading process preserves uninterrupted grain lines around every barb tooth. This significantly increases fatigue life, ensuring the barbs won't snap off under hose whip.

• Zero Porosity: The displacement forming method eliminates internal voids. No pinholes, no pressure leaks through the fitting body itself.

• Ready-to-Use Finish: Oiled and shaved at the ends, straight from the box. You don't need to tumble or deburr before assembly.

• Consistent Interference: Shaved barb O.D. holds a tight tolerance range, so every hose slides on with the same resistance. No loose fits, no impossible shoves.

• Clamp-Ready Hex: The forged hex flats are crisp and parallel—your wrench won't cam out when you're cranking down on a stubborn clamp.

• RoHS & REACH Compliant: Our oil dip and steel chemistry stay within international environmental regulations, no problematic substances.

Application

• Low-Pressure Return Lines: Forged Cold Heading Steel Hex Hose Barb Fitting perfect for hydraulic tank return hoses where pressure stays under 300 PSI.

• Coolant Circulation Systems: Used in water-cooled welding guns and plastic injection mold cooling circuits, to instead which brass fittings corrode over time.

• Air Brake Lines: Found on heavy trucks and trailers, these barb fittings connect nylon or rubber air lines to glad hands and quick-release valves.

• Agricultural Sprayers: Mounted on field spray booms, they handle abrasive liquid fertilizers without rusting out like plain steel.

• Marine Bilge Pump Hoses: Their corrosion-resistant oil coating holds up better than bare steel in damp bilge compartments.

• Industrial Washdown Stations: Connecting pressure washers to chemical injector hoses in food plants, where quick disconnects don't fit.

Installation & Mounting Guide

1. To fit the Forged Cold Heading Steel Hex Hose Barb Fitting Cut hose square with a sharp blade. No angled cuts.

2. Lubricate bore with soapy water or silicone spray. Never use petroleum—it attacks rubber compounds.

3. Align straight and push the hose onto the barb until it bottoms against the hex shoulder. Twist while pushing for even expansion.

4. Position clamp behind the first barb peak, not on top—clamping over the peak cuts the hose and invites leaks.

5. Tighten worm clamp until the hose just begins to bulge through the slots, then back off a quarter-turn. Over-torquing causes field failures.

6. For stubborn hoses, soak the end in 140°F water for two minutes to soften the rubber.

7. Pressure-test with water at 1.5x working pressure for two minutes. Air alone gives false readings and can eject the hose dangerously. Dry the joint before testing—residual lubricant masks real weeps.