The XYOON Stainless and Carbon Steel Hydraulic Flared Flange F37 is available in two types of materials: carbon steel and 304/316 stainless steel. It relies on the 37° expanded metal sealing structure in accordance with the SAE J514 standard, with a maximum pressure capacity of 40 MPa. It offers stable and leak-free vibration-proof sealing. It can complete the connection of large-diameter hydraulic pipelines without welding. After disassembly, it can be reused. It is suitable for heavy industrial high-pressure conditions such as construction machinery, ships, wind power, and petrochemicals. It supports bulk wholesale and customized non-standard sizes, significantly reducing the on-site assembly time and testing costs.
XYOON Stainless and Carbon Steel Hydraulic Flared Flange F37 is a welding‑free high‑pressure pipeline connecting component designed for heavy industrial fluid transmission. It adopts a standard 37° flared sealing structure, which forms a rigid and reliable metal‑to‑metal seal after assembly, eliminating risks of loosening and leakage under high pressure and vibration. It is mainly used for the connection of large‑diameter hydraulic pipelines, equipment oil ports and fixed interfaces, and is widely used in working conditions requiring high stability and long service life.
1. 37° flared metal sealing: Stable metal‑to‑metal contact, zero leakage under long‑term high pressure and vibration.
2. Welding‑free installation: No welding, no post‑weld inspection, short construction period and lower cost.
3. Dual material options: Carbon steel for cost‑effective general working conditions; 304/316 stainless steel for corrosion‑resistant scenarios.
4. Standardized compatibility: Fully compliant with SAE J514, compatible with mainstream hydraulic systems globally.
5. Reusable: Can be disassembled and reassembled many times without reducing sealing performance.
6. High strength: Forged blank + precision machining, stable performance under pressure up to 40MPa.
XYOON F37 flared flange is widely used in heavy industrial fields with high requirements for pressure resistance and reliability:
1. Construction machinery: Excavators, loaders, cranes hydraulic main pipelines.
2. Petrochemical engineering: High‑pressure oil and gas transmission, chemical medium pipelines.
3. Shipbuilding & marine engineering: Ship hydraulic systems, offshore platform pipelines.
4. Metallurgical equipment: High‑temperature and high‑pressure fluid circuits in steel mills.
5. Wind power equipment: Turbine hydraulic control pipeline connection.
Our own forging and CNC processing lines simultaneously produce carbon steel and stainless steel F37 flanges for general applications. For common working conditions, carbon steel is used to control the procurement cost. For coastal and chemical corrosion environments, 304/316 stainless steel models are directly selected, eliminating the need to negotiate with multiple suppliers. The entire process of inventory preparation, quality inspection, and shipment is completed uniformly.
All flange dimensions and 37° sealing conical surfaces are uniformly processed in accordance with SAE J514 specifications, and they perfectly match the oil ports of overseas mainstream heavy machinery equipment and standard pipeline accessories. Exporting overseas does not require re-adjusting the pipeline structure, reducing project renovation costs.
Stainless and Carbon Steel Hydraulic Flared Flange F37 uses an overall forged blank and then precision machining for shaping. There are no air holes or sand eye defects inside, and it is not prone to cracking or deformation under 40MPa high-pressure long-term circulation use. Compared to low-priced cast flanges on the market, which are prone to oil leakage under high pressure, this product avoids such faults from the raw material process.
Standard models are always in stock and can quickly meet the batch inventory needs of the entire machine factory. For special pipe diameters and non-standard installation holes, non-standard mold customization is provided. Each batch of goods comes with size and pressure resistance test reports, facilitating overseas project acceptance and customs clearance.
Equipped with professional foreign trade technicians, they provide flange expansion processing, assembly torque standard guidance, and remote assistance to troubleshoot leakage and poor sealing issues. The entire machine has a 12-month warranty, and non-human processing defects are free to replace with new parts.
Q1: Will the sealing effect of the stainless and carbon steel hydraulic flared flange F37 deteriorate after multiple disassemblies and reassemblies?
A: No. The 37° metal hard-sealing structure has no easily aging rubber parts. Under standard operation, multiple disassemblies and reassemblies can still maintain a stable seal. As long as the flange and pipeline expansion are not damaged, it can be used normally.
Q2: Can the carbon steel F37 flange be directly used in the high-salt-spray environment at sea?
A: Not recommended. Carbon steel is only suitable for inland dry and non-corrosive medium working conditions. For ships, offshore platforms, and chemical scenarios, please choose 304 or 316 stainless steel F37 flanges to resist chloride ion corrosion for a long time.
Q3: Is it necessary to perform pipe welding procedures when using the F37 flange?
A: No. The core advantage of this product is no welding assembly. The pipeline only needs standard 37° expansion processing before connecting to the flange. It saves multiple processes such as welding, flaw detection, and cleaning of welding slag, and shortens the construction period.
Q4: What pressure rating of hydraulic system is the F37 flange suitable for?
A: The standard model can withstand a maximum stable pressure of 40 MPa. It is suitable for most heavy-duty high-pressure hydraulic circuits. For special high-pressure situations, we can customize thickened and reinforced non-standard flanges for you.
Q5: What pre-treatment needs to be done to the pipe to match the F37 flange?
A: The pipe end needs to be processed into a standard 37° expansion, with a flat end surface and no burrs or scratches. There should be no indentation or scratches on the pipe wall. We recommend using a pipe cutting machine and deburring machine to complete the pipe pre-treatment to ensure the sealing fit.
Q6: Can special installation hole spacing and special thickness F37 flanges be customized?
A: Customization is supported. You can adjust the flange thickness, bolt hole spacing, overall outer diameter according to the customer's equipment installation drawings. We will provide samples for testing to confirm the sealing and installation dimensions before mass production.
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Changxing Road, Jiangbei District, Ningbo City, Zhejiang Province, China
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