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The Sanheng 15611 / 15612 Male NPT Straight Swaged Hose Fitting serves as a foundational component for demanding fluid transmission systems. Engineered from premium integrated forged blanks, this fitting delivers exceptional tensile strength and thread engagement accuracy. The straight structural design facilitates unobstructed, smooth fluid dynamics across complex hydraulic pipelines, effectively minimizing pressure drops and reducing internal turbulence during continuous operation.
Utilizing the American standard NPT male thread, it guarantees a highly secure, vibration-resistant seal when mated with corresponding NPT threaded components. Designed to meet stringent SAE and ISO international hydraulic standards, this component offers seamless cross-brand interchangeability, acting as a reliable replacement for similar fittings from major international manufacturers. Whether handling oil, water, and gas pipeline systems, the robust construction ensures zero-leakage performance, making it an indispensable asset for heavy-duty industrial hydraulic equipment operating under extreme environmental stresses.
Product Name | Sanheng Forged Hydraulic 15611 15612 Male NPT Straight Swaged Hose End Fitting |
Code | 15611 15612 |
Material & Surface Treatment | Carbon steel (zinc plated Cr3+); Stainless steel (passivation) |
Application | Pipe connection（oil,water,gas） |
Technology | CNC machining |
Package | All adapters equipped with thread protective end caps, inside plastic bags, and then inside standard blank carton boxes. |
Custom Service | OEM & ODM available |
Series | Thread Type | Hose Type | Forging Grade | Surface Treatment | Working Pressure | Temperature Range | Connection Form |
15611 | NPT Male 1/4" - 2" | Braided Hydraulic Hose | 1045 | Zinc Plated Cr3+ | 2500PSI | -40℃ ~ 120℃ | Swaged Connection |
15611 | NPT Male 1/4" - 2" | Braided Hydraulic Hose | 304/316 SS | Passivation | 3000PSI | -60℃ ~ 200℃ | Swaged Connection |
15612 | NPT Male 1/4" - 2" | Spiral Hydraulic Hose | 4140 | Zinc Plated Cr3+ | 4000PSI | -40℃ ~ 150℃ | Swaged Connection |
15612 | NPT Male 1/4" - 2" | Spiral Hydraulic Hose | 316L SS | Passivation | 4500PSI | -60℃ ~ 250℃ | Swaged Connection |
Note: All models support custom thread length and swaged size according to customer hose specifications. | |||||||
Designed with a precision-cut NPT taper thread, this fitting provides a mechanical wedge effect that creates a formidable seal against fluid leakage. The thread profiles are meticulously machined to ensure perfect bite accuracy, facilitating straightforward installation and long-term reliability. This standardized geometry is highly suitable for connection with standard NPT threaded hydraulic components, significantly reducing procurement complexity and maintenance downtime for engineering teams by allowing effortless integration across various systems.
The straight swaged design is specifically engineered to maintain stable fluid flow velocities within the hydraulic circuit. By eliminating sharp turns or internal obstructions, this configuration minimizes fluid friction and heat generation, which is crucial for preserving the integrity of hydraulic fluids over extended operational periods. It is highly suitable for common hydraulic hose connections, firmly gripping the hose to provide exceptional resistance against blow-off during sudden pressure spikes.
Manufactured with advanced CNC machining centers, each fitting boasts a highly stable internal and external structure. The transition from raw forged blanks to the final product involves rigorous dimensional control, ensuring accurate thread dimensions and exact tolerances. Before leaving the facility, these fittings undergo comprehensive high-pressure burst testing and thread go/no-go gauge inspections, guaranteeing structural integrity and system-level zero leakage under the most punishing operational loads.
The carbon steel variants are fortified with a premium Cr3+ zinc plating surface treatment. This environmentally friendly, RoHS-compliant finish not only provides a distinct, clean metallic appearance but also serves as a formidable barrier against oxidation. It is highly suitable for general hydraulic system environments, consistently passing rigorous salt spray corrosion tests to ensure lasting durability and reliable performance in standard indoor or moderately exposed industrial settings.
For environments demanding maximum resilience, the stainless steel options undergo a specialized passivation treatment. This process removes surface contaminants and enhances the natural chromium oxide passive film, providing improved corrosion resistance against harsh chemicals, saline environments, and extreme temperature fluctuations. The smooth, refined tactile feel of the stainless steel reflects its premium craftsmanship, making it the definitive choice for marine, offshore, and aggressive chemical processing applications.
This Male NPT Hydraulic Fitting is a universal component for NPT thread hydraulic systems, suitable for various industrial scenarios with high connection reliability requirements. Its robust construction ensures that operations continue smoothly without the risk of hazardous fluid leaks:
Heavy Machinery: Essential for mining machinery, metallurgical processing equipment, and heavy-duty port cranes. These systems are subjected to relentless vibration and immense pressure surges, and our fittings are highly resistant to high pressure and harsh working conditions, ensuring uninterrupted power transmission.
Automotive & Aerospace: Precision is paramount in automated auto manufacturing production lines and aerospace ground equipment. The exact dimensional tolerances of these fittings guarantee stable fluid delivery, operating with high precision and stability demanded by advanced robotic fluid systems.
Petrochemical Industry: Oil refineries and chemical plants require fluid transmission systems that can endure volatile environments. Our fittings provide secure pipeline connection of fluid transmission systems, heavily resistant to chemical medium corrosion to maintain facility safety.
Agricultural Machinery: Tractors, combine harvesters, and extensive agricultural irrigation systems operate in unforgiving outdoor environments. The secure swaged connections are perfect for adapting to outdoor harsh working environments, minimizing maintenance requirements in the field.
To support large-scale procurement and specialized engineering requirements, we offer comprehensive manufacturing and logistical support tailored to your project needs:
Deep Customization Support: We provide end-to-end OEM and ODM services. From initial technical drawing evaluation and rapid prototyping to full-scale batch production, our engineering team accommodates non-standard thread lengths, specialized swaged dimensions, and custom corrosion-resistant alloy requests.
Industrial-Grade Packaging: Every adapter is meticulously protected. We equip all standard and custom fittings with dedicated thread protective end caps. The units are then sealed inside high-strength, anti-rust plastic bags before being packed into export-grade, thickened blank carton boxes and secured on fumigation-free pallets, ensuring zero damage or rust during long-distance maritime transit.
Scale and Delivery Assurance: Leveraging highly automated production lines and maintaining a substantial inventory of standard 15611 and 15612 components, we possess the throughput capacity to process extensive orders rapidly, guaranteeing on-time delivery for critical project timelines.
The primary distinction lies in the type of hose they are designed to accommodate and the operational pressures they can withstand. 15611 is specifically engineered to be used for braided hydraulic hoses, typically handling standard high-pressure environments up to 3000PSI. In contrast, while 15612 is used for heavy-duty spiral hoses, it features a more robust forging grade to handle extreme high-pressure applications reaching up to 4500PSI.
It utilizes the American standard NPT male thread (National Pipe Taper). This tapered design allows the threads to pull tight, creating a fluid-tight seal through mechanical deformation and friction, which is highly effective for secure pipe connections without the absolute need for supplementary sealing compounds in many standard applications.
