XYOON is a professional manufacturer and supplier of hydraulic pipeline fittings. Our SAE 37 Degree Flare Flanges are produced using integral forging and precision CNC machining. Available in carbon steel as well as 304 and 316 stainless steel, they utilize a 37° metal-to-metal seal structure to enable weld-free connections for large-diameter, high-pressure pipelines. Capable of withstanding stable pressures up to 42 MPa, they are suitable for high-flow hydraulic circuits in heavy equipment. They can be purchased as a complete package alongside our fittings, ferrules, and valve blocks, providing a one-stop solution for high-pressure fluid piping requirements.
1. Enables weld-free, rigid sealing for large-diameter pipelines. Traditional welding of large pipes often causes slag formation and material deformation, requiring subsequent flaw detection. In contrast, the SAE 37° flare flange forms a dual-layer metal seal through the mating of standardized flared conical surfaces. This eliminates the need for hot work, greatly simplifies assembly, and prevents oil circuit blockages caused by welding slag.
2. Reliably handles high-flow, high-pressure fluid transmission. The integrally forged flange structure offers high strength and a higher pressure rating than standard small fittings. It is ideal for high-flow main oil circuits in construction machinery and offshore platforms, remaining secure against loosening or leakage caused by long-term pressure fluctuations and equipment vibration.
3. Facilitates pipeline disassembly, maintenance, and expansion. The split-flange design allows for easy assembly and disassembly, eliminating the need to cut pipes during maintenance or component replacement. Multi-port flange blocks enable direct oil flow splitting and merging, reducing the need for numerous elbows and adapters while simplifying the overall piping layout.
1. Heavy Construction Machinery: Main hydraulic supply circuits for large cranes, tunnel boring machines, and loaders; fixed connection points for large-diameter, high-pressure oil lines.
2. Marine and Offshore Platforms: High-pressure fluid lines for deck hydraulic winches, hatch cover hydraulic systems, and offshore drilling equipment; stainless steel versions are suitable for corrosive environments involving seawater and salt spray.
3. Wind and Power Generation Equipment: Hydraulic systems for wind turbine pitch and yaw control; high-pressure hydraulic control lines for water turbines and steam turbines. 4. Oil, gas, and metallurgical equipment: Hydraulic circuits for drilling equipment; high-temperature, high-pressure fluid transfer lines for rolling mills and continuous casting equipment.
1. Before assembly, clean oil and metal debris from the sealing cone surface and flange ports of the SAE 37 Degree Flare Flange; residual impurities can damage the sealing surface and cause long-term micro-leakage. Tubing must be flared to the standard 37° angle beforehand, ensuring the end face is free of burrs or deformation.
2. Tighten bolts evenly in a diagonal pattern and in multiple stages; do not fully tighten one side at a time, as uneven loading can tilt the flange, resulting in a poor seal and potential leakage.
3. Inspect bolt tightness every six months under normal operating conditions; shorten the interval to three months for offshore or corrosive chemical environments, and promptly remove salt deposits and corrosive agents from the surface.
4. For long-term storage, disassemble the components and store them separately; apply anti-rust oil to the flange sealing surface and store in a dry warehouse to prevent cone surface corrosion from compromising future sealing performance.
A: Yes, it can be reused multiple times if disassembled and reassembled according to standard procedures; provided the flange body and flared tube end are free from impact damage, sealing performance will not significantly degrade.
A: Long-term use is not recommended; carbon steel has poor rust resistance and corrodes easily in coastal salt-spray environments. For marine projects, 316 stainless steel versions are preferred.
A: Yes, it is fully interchangeable. The product strictly adheres to SAE J514 dimensional standards and is compatible with compliant piping accessories of the same specifications available on the market.
A: The standard model supports a stable working pressure of 42 MPa; for ultra-high-pressure applications, thickened, reinforced, non-standard flange blocks can be custom-made.
A: No, a metal-to-metal hard seal using conical surfaces is sufficient. PTFE tape entering the oil circuit can clog precision valve components, potentially causing system malfunctions.
