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Product Name | Sanheng Forged Hydraulic 74° 16711 16712 JIC Male Thread Straight Hose Fitting |
Code | 16711 16712 |
Material & Surface Treatment | Carbon steel (zinc plated Cr3+); Stainless steel (passivation) |
Application | Pipe connection（oil,water,gas） |
Technology | CNC machining & Forged |
Package | All adapters equipped with thread protective end caps, inside plastic bags, and then inside standard blank carton boxes. |
Our main products | Threaded hydraulic hose fittings and pipe adapters, sucn as Metric , BSP, BSPT, NPT , JIC , ORFS, SAE thread. |
The 16711 and 16712 series straight hose fittings are purpose-built to solve the most persistent failure point in mobile hydraulic systems: hose termination leaks and pull-out under continuous vibration. Unlike generic hose ends that suffer from uneven crimping and misaligned sealing surfaces, these components integrate a precision-calibrated crimp shoulder and self-centering 74° JIC cone into a single forged body. The 16711 series is optimized for 1-2 layer braided hydraulic hoses, while the reinforced 16712 series is engineered for 4-6 layer spiral hoses used in extreme high-pressure applications. Manufactured via closed-die forging with multi-axis CNC machining, they deliver a burr-free, perfectly concentric interface that eliminates both hose-to-fitting separation and fitting-to-port leaks. Suitable for conveying hydraulic oil, industrial water and compressed gases, these fittings drastically reduce unplanned downtime from hose failures and provide a reliable, long-lasting termination for JIC standard hydraulic hose assemblies.
Manufactured in strict compliance with SAE J514 and ISO 12151 international standards, all 74° cone angles, thread pitches and crimp dimensions are controlled to ±0.05mm. Carbon steel variants pass 96-hour neutral salt spray testing without red rust, while stainless steel versions withstand over 500 hours of salt spray exposure. The 16711 series has a rated working pressure of 21 MPa (3000 PSI), and the 16712 series supports up to 42 MPa (6000 PSI). Complete crimp parameter charts, dimensional drawings and material certification reports are available upon request, and all fittings are 100% interchangeable with equivalent JIC hose ends from global mainstream brands.
Precision-Calibrated Crimp Shoulder: Machined to exact industry tolerances for uniform crimp force distribution, eliminating under-crimp leaks and over-crimp hose damage that account for 70% of premature hose failures.
Self-Energizing 74° Cone Seal: The tapered metal-to-metal interface tightens proportionally with increasing system pressure, eliminating O-ring degradation risks in high-temperature applications up to 200°C.
Anti-Galling Cold-Rolled Threads: Cold-formed JIC threads deliver 30% higher fatigue strength than cut threads, with a mirror-smooth surface that prevents galling during repeated port connections and disconnections.
Anti-Slip Hexagon Head: Chamfered edges and flat, burr-free wrench flats prevent tool slippage and rounding during high-torque installation, even in oily or dirty field conditions.
Vibration-Locking Hose Barb: Optimized barb profile creates a mechanical interlock with the hose's steel reinforcement layer, preventing hose pull-out under continuous machinery vibration and hydraulic shock.
Full-Coverage Corrosion Protection: Surface treatments are applied after all machining operations, ensuring complete plating coverage even in hard-to-reach crimp recesses and thread roots.
Carbon Steel (RoHS-Compliant Cr3+ Zinc Plated)
Adopts a hexavalent-chromium-free trivalent zinc plating process with uniform coating adhesion, providing excellent rust and oxidation resistance. It offers high tensile strength and exceptional cost-effectiveness, making it ideal for general construction, agricultural machinery and indoor industrial hydraulic systems.
304/316L Stainless Steel (Chemical Passivation)
Uses high-quality low-carbon stainless steel billets processed through rigorous low-temperature passivation treatment, which removes surface free iron and forms a dense, self-healing chromium oxide film. This enhances acid, alkali and salt spray corrosion resistance by 300% compared to untreated steel, perfectly suited for marine engineering, offshore oil & gas and food processing applications.
Mobile Construction Equipment: Standard termination for excavator boom, bucket and steering hoses, withstanding severe shock loads and continuous off-road vibration.
Agricultural Machinery: Used for tractor implement hoses, combine harvester hydraulic drives and high-pressure irrigation systems, resistant to dust, debris and outdoor weather exposure.
Mining & Quarrying: Heavy-duty 16712 series for high-pressure hydraulic lines on underground drills, crushers and conveyors, with forged construction resisting impact and abrasion.
Industrial Hydraulic Power Units: For flexible hose connections between pumps, valves and actuators, ensuring leak-free operation in continuous production environments.
Marine & Offshore: Stainless steel variants for ship deck machinery, winches and offshore platform hydraulic hoses, providing long-term corrosion resistance in salt spray and humid marine atmospheres.
The fitting body is formed in a single operation via 1000-ton hot closed-die forging, which aligns the metal grain flow along the load path to maximize tensile strength and fatigue resistance. All critical surfaces—including the 74° cone seat, JIC threads and crimp shoulder—are machined in a single setup on 3-axis CNC lathes, ensuring perfect concentricity and eliminating alignment errors. Each unit undergoes 100% thread go/no-go gauge inspection and hydrostatic pressure testing at 1.5 times the rated working pressure. Random batch samples also undergo destructive pull tests to verify that the fitting will only separate from the hose after the hose itself ruptures, meeting the highest industry safety standards.
Q: Are you a direct manufactory for these hydraulic components?
A: Yes. Our company specializes in the dedicated manufacture of hose connectors, instrument fitting connectors, transition joints, and various hydraulic adapters. We control the entire production process from our facility in Ningbo, Zhejiang Province, China.
Q: How can we evaluate the quality of your fittings before committing to a large order?
A: We highly encourage quality verification. We welcome sample orders, including mixed samples, to test and check our precision machining. You can try a small order first to form your own judgment on our quality. Samples are sent with a little and reasonable charge, with the freight on your account.
Q: What is the standard delivery time for bulk procurement?
A: Normally, for bulk orders, the delivery time is approximately 30 days. Orders involving multiple complex parts or customized products will take more time. In general, conventional products are in stock, which can completely deal with small batch shipments immediately.
Q: Do you offer OEM/ODM services and custom branding?
A: Absolutely. We are a professional manufacturer of hydraulic pipe fittings with rich experience in the manufacture and design of hydraulic products. We can support OEM/ODM projects and can make products with your brand, marking, or logo utilizing high-precision laser marking technology.
Q: Is there a Minimum Order Quantity (MOQ) limit for your hydraulic fittings?
A: If the required items are currently in stock, we will not set an MOQ, providing you with maximum purchasing flexibility. If the products are out of stock or need to be customized, we will set a reasonable MOQ. For more details regarding specific models, please contact us directly.
Q: What are your accepted payment terms for international transactions?
A: Our standard payment term is T/T (Telegraphic Transfer), ensuring secure and efficient financial processing for global shipments.
Q: What is your enterprise mission and core philosophy?
A: We are sticking to the enterprise trade conception of Unity, Fighting, Innovation, and Efficiency. Our enterprise survival philosophy is forging reputation by quality and creating a brand by strength.
