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Product Name | Sanheng ISO SAE Standard Hydraulic 6000PSI 87611 87612 Code 62 Hose Flange Fitting |
Code | 87611 87612 |
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 87611 and 87612 Code 62 hydraulic hose flange fittings are engineered to resolve the most severe fluid power failures in heavy mobile machinery: catastrophic hose blowouts and persistent connection leaks caused by intense pressure pulsations and mechanical vibration. Operating safely at 6000 PSI, this integrated flange-to-hose design evenly distributes clamping forces across a 360-degree sealing surface, completely bypassing the stress concentrations inherent in traditional threaded connections. Holding the fitting, you immediately notice the substantial weight of the one-piece hot-forged body and the flawlessly smooth, precision-machined mirror finish on the flange face. This meticulously crafted surface ensures uniform compression of the O-ring, locking in a hermetic seal even when subjected to the violent, sudden pressure spikes characteristic of excavator breakers or heavy-duty loader lift cylinders. By establishing a permanent, mechanical interlock with the steel reinforcement layers of the hose, these fittings drastically reduce unplanned maintenance downtime and safeguard critical hydraulic systems conveying oil, industrial water, and compressed gases.
Manufactured in strict adherence to SAE J518 and ISO 6162 international fluid power standards, these Code 62 flange fittings guarantee absolute dimensional accuracy. We control flange face flatness, bolt hole positioning, and crimping groove geometries to tight ±0.03mm tolerances. This rigorous dimensional control ensures 100% flawless interchangeability with global mainstream flange systems, including DIN 20066 and JIS B 8363, allowing procurement teams to confidently replace existing components without incurring costly system modifications. Before leaving the facility, every single unit is subjected to an uncompromising 100% hydrostatic pressure test at 1.5 times the rated working pressure—reaching a staggering 9000 PSI—to verify structural integrity and leak-proof performance. We maintain comprehensive documentation for every batch; complete crimp parameter charts, flange clamp matching guides, dimensional inspection reports, and material certifications are readily accessible to support your engineering and compliance requirements.
Eliminates vulnerable welds and threaded transition joints between the flange head and the hose stem. This unibody architecture reduces potential fluid leak points by half and boosts overall burst strength by 30% compared to conventional multi-piece assembled designs.
The precision-ground flange face achieves a remarkable flatness of 0.02mm per 100mm. When paired with a standard 4-bolt Code 62 flange clamp, it ensures perfectly uniform 360-degree O-ring compression. This mechanism sustains zero-leak performance through over one million severe pressure impulse cycles.
Engineered with distinct crimping profiles tailored to specific hose structures. The 87611 variant features a carefully rounded, shallow groove designed to firmly grip without fracturing delicate steel wire braided layers. Conversely, the 87612 model utilizes a sharp-edged, deep-biting groove that securely anchors into high-pressure spiral steel reinforcement, preventing pull-out even during 9000 PSI pressure spikes.
The dense, solid forged steel body acts as a mechanical shock absorber. It dissipates high-frequency vibrations generated by heavy machinery, effectively preventing the gradual loosening of flange bolts and eliminating the micro-crack formation that plagues lighter, cast alternatives over years of continuous operation.
The internal bore is polished to a smooth finish, removing internal burrs and flow obstructions. This streamlined fluid path minimizes turbulence and pressure drops, significantly enhancing the responsiveness of the hydraulic cylinders while reducing energy waste in the primary power unit.
We utilize an advanced roll-forming process for the crimping grooves rather than traditional cutting. This creates a smooth, sharp-edge-free interface against the hose's inner synthetic rubber tube, preventing internal abrasion and premature degradation of the hose liner during the crimping process.
Engineered for demanding industrial environments, this option utilizes a high-adhesion trivalent chromium zinc plating process. The protective coating penetrates deeply, uniformly covering the intricate crimping grooves to prevent oxidation in areas exposed after the hose assembly process. Delivering exceptional tensile strength and passing 96-hour neutral salt spray testing without a single trace of red rust, this cost-effective material is the standard choice for earthmoving machinery, agricultural implements, and factory hydraulic power units.
For extreme environments, we forge these fittings from premium low-carbon stainless steel billets. The finished components undergo an eco-friendly citric acid passivation treatment that meticulously extracts surface free iron, fostering the growth of a dense, self-healing chromium oxide shield. The 316L variant easily withstands over 500 hours of intense salt spray exposure, making it the definitive solution for highly corrosive applications such as marine engineering, offshore oil and gas platforms, and aggressive chemical processing facilities.
Serves as the primary fluid connection for excavator booms, heavy-duty buckets, and hydraulic breaker attachments, easily absorbing severe mechanical shock loads and continuous off-road vibration without losing clamp tension.
Deployed in the critical high-pressure lines of underground loaders, articulated haul trucks, and rotary drilling rigs, where components must endure highly abrasive silica dust and extreme temperature fluctuations daily.
The preferred choice for telescopic boom extensions and outrigger stabilization hoses. The secure Code 62 flanged connection provides fail-safe sealing performance under dynamic lifting loads and wind-induced structural swaying.
Our passivated stainless steel variants are heavily utilized in ship deck machinery, heavy-lift winches, and offshore drilling platform hydraulics, effectively resisting rapid degradation from constant salt spray and harsh oceanic climates.
Integrated into centralized high-pressure hydraulic power units and massive metal-forming presses. The reliable, leak-free performance is essential for maintaining consistent production cycles and preventing hazardous fluid spills on the factory floor.
The creation of each fitting begins with a 1600-ton hot closed-die forging process. This immense pressure permanently aligns the internal metal grain flow directly along the anticipated load paths, maximizing the component's fatigue resistance and ultimate burst strength. Following the forging stage, the critical flange face is subjected to precision CNC grinding to achieve an immaculate, mirror-like flatness that you can feel with your fingertips. Instead of aggressive cutting, the internal crimping grooves are meticulously roll-formed. This technique yields a perfectly smooth, burr-free surface that protects the vulnerable inner tube of the hydraulic hose from scoring during final assembly. Every production batch is subjected to a battery of destructive evaluations, including extreme burst testing, dynamic impulse cycling, and rigorous hose pull-out assessments, guaranteeing that every fitting delivers uncompromising reliability in the field.
To assist your procurement and engineering teams in making informed decisions, we have compiled detailed answers to the most common technical and operational inquiries regarding our hydraulic flange fittings.
A: The Code 62 (87611/87612 series) is specifically engineered with a thicker flange head and robust mounting hardware to safely manage extreme high-pressure fluid systems operating up to 6000 PSI (420 bar). Conversely, Code 61 fittings are designed for standard pressure environments up to 3000 PSI.
A: Absolutely. For aggressive environments, we strongly recommend our 316L stainless steel option, which features a specialized citric acid passivation treatment to maximize longevity against salt spray. For standard industrial use, our carbon steel fittings utilize an advanced Cr3+ zinc plating for excellent environmental protection.
A: We fully support OEM customization to enhance your brand visibility and streamline inventory tracking. Simply supply your brand logo, specific part numbers, or technical specifications in a vector format. Our engineering team will program the CNC laser to permanently and cleanly etch these details directly onto the metal surface of the fittings.
A: Yes, we actively encourage comprehensive internal testing. You can request flexible mixed sample batches so your engineering and quality assurance teams can independently verify dimensional accuracy, crimp compatibility, and pressure tolerance. Samples are provided at a nominal charge, with the recipient covering freight costs.
A: We maintain a robust inventory of standard conventional products, allowing for immediate dispatch of small batches. For large-scale procurement or mixed shipments requiring specific custom manufacturing, we commit to a reliable 30-day standard lead time. We provide transparent production schedule updates to ensure your supply chain operations remain perfectly synchronized.
