Threaded Flange | Professional Non-Standard Custom Manufacturer
Threaded Flange is a fast pipe connection fitting that requires no welding. It achieves sealed connection through tight engagement between the internal flange thread and the external pipe thread, featuring easy disassembly and assembly and fire-free construction. As a professional flange manufacturer based in Cangzhou, we produce standard threaded flanges in accordance with Chinese, American, German and Japanese standards. We also provide customized services for small-diameter, thickened, special thread and special-shaped non-standard threaded flanges, supporting processing based on drawings and samples with direct factory supply.
1. Structural Characteristics of Threaded Flange
The biggest advantage of threaded flanges is weld-free installation. Precision standard thread profiles are machined inside the flange, allowing direct tightening connection with externally threaded pipes, pipe fittings and valves on site. No welding equipment or open flame is required, which greatly improves construction efficiency and is especially suitable for flammable and explosive environments where open fire is prohibited.
Produced by integral forging technology, threaded flanges feature high density, high strength and excellent deformation resistance. The regular burr-free threads ensure tight engagement, and the smooth sealing face guarantees stable sealing performance. Compared with welded flanges, threaded flanges can be disassembled and reassembled repeatedly for convenient later maintenance and replacement, without damaging pipe materials due to welding high temperature. It is the preferred fitting for small-diameter and low-pressure pipelines.
2. Common Materials and Specifications
We customize threaded flanges with different materials according to pipeline media, service temperature and corrosive environments, adapting to various normal-temperature, low-temperature working conditions without severe vibration:
- Carbon Steel Threaded Flange: 20#, Q235B, A105, 16Mn. With stable performance and high cost performance, it is widely used in water supply and drainage, compressed air, conventional oil and gas, and fire protection pipeline systems.
- Stainless Steel Threaded Flange: 304, 316L, 321, 2205 duplex steel. Featuring excellent rust resistance and acid-base corrosion resistance, it is applied in chemical, pharmaceutical, sewage treatment and seawater desalination pipelines.
- Alloy Steel Threaded Flange: 15CrMo, 12Cr1MoV and other materials, suitable for industrial auxiliary pipelines with relatively high temperature and special media.
Specification coverage: Mainstream small diameters from DN15 to DN100, customized special calibers available; Pressure grades include PN10, PN16, PN25, PN40, PN64, as well as conventional American standard Class150 and Class300. Thread types can be customized according to Chinese standard, American NPT and British BSP threads.
3. Implementation Standards and Sealing Types
All our threaded flanges are produced in strict accordance with domestic and international industry standards, suitable for domestic engineering projects and export orders. Core applicable standards include GB/T9114, HG/T20592, ASME B16.5, EN1092, JIS B2220, etc.
Customizable sealing faces include RF (Raised Face), FF (Full Face) and MFM (Male and Female Face). Among them, RF threaded flanges are the most widely used, compatible with rubber gaskets, PTFE gaskets and metal gaskets for stable sealing performance and simple maintenance.
4. Working Conditions and Application Scope
With weld-free installation, flexible disassembly and high safety, threaded flanges are mainly applied to normal-temperature, low-pressure, non-severe vibration and fire-prohibited pipeline projects, serving as common products for fire protection, civil and light industrial pipelines:
- Fire protection engineering: Fire water pipelines, spray systems and pressure stabilizing pipeline connections
- Municipal and civil engineering: Tap water supply, heating branch lines and low-pressure ventilation pipelines
- Chemical and light industry: Process pipelines in fire-prohibited areas of flammable and explosive workshops, light chemical medium pipelines
- Mechanical and electrical equipment: Inlet and outlet interfaces of small pumps and valves, instrument and low-pressure gas pipeline connections
- Environmental protection industry: Light-duty sewage treatment pipelines and pure water conveying pipeline systems
5. Our Production and Customization Advantages
Equipped with complete production lines for forging, CNC turning, precision thread processing and quality inspection, we meet the demands of standard spot supply and non-standard engineering customization:
1. High thread precision: Adopting CNC precision thread turning, the flanges feature clear and uniform threads with high engagement, effectively avoiding thread slipping and deviation during on-site installation to ensure tight and leak-free sealing.
2. Powerful non-standard customization: We can customize threaded flanges with special threads, thickened walls, special-shaped structures and special hole pitches without mold opening, accepting both small trial orders and large-scale engineering orders.
3. Strict and comprehensive quality inspection: Each batch of products is fully inspected in terms of dimension and thread accuracy, with material certificates and factory inspection reports provided to meet the requirements of project acceptance and export.
4. Stable and efficient supply: Sufficient stock for conventional specifications supports fast delivery; the production cycle of customized products is strictly controlled to guarantee quality and project progress.
6. Common Purchasing FAQs
Q: Can threaded flanges be used for high-pressure pipelines?
A: They are not recommended for high-temperature, high-pressure and severely vibrating main pipelines. Threaded flanges are more suitable for static working conditions with normal temperature and low pressure. Weld neck flanges or socket weld flanges are recommended for key high-pressure pipelines.
Q: Can you customize American standard NPT threaded flanges?
A: Yes. We support customization of various standard threads including national standard, American NPT and British BSP, with precise processing according to customer drawings and thread parameters.
Q: Can you provide complete acceptance and export documents?
A: We provide free complete documents including product certificates, material test reports and dimension inspection reports to support domestic project acceptance and export customs clearance.
Inquiry & Cooperation
Whether you need in-stock standard threaded flanges or custom non-standard threaded flanges for engineering projects, simply provide drawings, dimensions, materials, thread types and pressure parameters. Our technical team will verify specifications and provide accurate quotations promptly. We welcome long-term cooperation with engineering companies, trading enterprises and terminal manufacturers worldwide.