Threaded Flange Types
There are two types of threaded flanges. One is to seal the two pipe ends with a certain sealing surface and a lens pad. This type of flange is mostly used for ammonia production. But it has been used less recently, and the lens pad has been replaced by a metal ring.
The other type is the same as a normal flange, sealed with two flange sealing faces.
Facing Types
There are two facing types for threaded flange, raised face flange and ring joint flange.
Raised Face Threaded Flange
When the gasket surface area is above the bolted line of the flange, the raised face flange is easily identified. It is compatible with a wide range of gaskets, from flat to semi-metallic and metallic types, either ring or full.
The ring joint flange has a circular groove to accommodate the ring joint gasket, which can be used when metal to metal seals are required. Especially in conditions for high pressure and high temperature.
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Size
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1/2″ to 48″ DN10~DN5000
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Flange Standards
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ANSI, MSS, AWWA, DIN, UNI, JIS, BS, EN1092, GOST, SABS
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Pressure Rating
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Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
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ANSI B16.5
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6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
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JIS
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5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
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UNI
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6Bar 10Bar 16Bar 25Bar 40Bar
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EN
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6Bar 10Bar 16Bar 25Bar 40Bar
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Coating
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Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized
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Process
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Forged
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Test Certificates
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Raw Materials Certificate
100% Radiography Test Report Third Party Inspection Report, etc |
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Production technique
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Forged, Heat treated and machined
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Types
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Weld Neck, Blind, Slip-On, Socket-Weld, Threaded, Orifice, Spectacle Blinds
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Uses & application
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Bitumen upgraders.
Heavy oil refineries.
Nuclear power (mostly seamless). Petrochemicals and acids. |
As a MIDAS professional provider of pipelines, we would like to highlight a product that excels in low-pressure and flexible connection scenarios: the Thread Flange.
I. Core Advantages of the Product: A Perfect Balance of Convenience and Adaptability
The core design concept of the thread flange lies in "weld-free connection": the end of the pipe is processed with external threads, and the inner hole of the flange is matched with internal threads. A tight connection is achieved through thread engagement, and in some scenarios, spot welding can be used for reinforcement and anti-loosening.
This design brings three significant advantages:
Efficient Installation: No professional welding equipment or welders are required. The connection can be completed through on-site screwing, significantly reducing the construction time. This method is especially suitable for emergency repairs or temporary pipeline installations.
Flexible Disassembly: Unlike welded flanges, threaded flanges can be easily assembled and disassembled multiple times. This makes them ideal for situations requiring regular maintenance or pipeline replacement.
Low-Damage Characteristic: This method avoids the high temperatures associated with welding, which can negatively impact pipe materials. It is particularly beneficial for thin-walled pipes or systems that are sensitive to material integrity.
II. Performance Parameters and Application Scenarios
Our thread flanges strictly comply with international standards such as ANSI and PN, covering multi-dimensional needs:
Specification Range: DN6 (1/8 inch) to DN600 (24 inches), meeting the adaptation needs from small instrument pipelines to medium-sized industrial pipelines.
Pressure Rating: Regularly covering Class 150, 300, 600, and PN6 to PN40, focusing on low-pressure to medium-low pressure scenarios.
Material Selection:
Carbon steel: Suitable for normal temperature and low-pressure water, gas, and oil transportation, with outstanding cost performance;
Stainless steel: For corrosive media such as acids and alkalis, suitable for chemical, food, and pharmaceutical industries;
Alloy steel: Can withstand medium-temperature environments, suitable for some industrial steam pipelines.
Sealing Adaptation: Supports various flange face forms such as Raised Face (RF), Tongue and Groove Face (TG), and Ring Joint Face (RJ). The sealing performance can be further improved by matching with corresponding gaskets.
III. Our Service Commitment
Customized Solutions: We offer material and specification customization services tailored to the specific requirements of your pipeline media, including its corrosiveness, temperature, viscosity, pressure level, and installation environment. This ensures that the flange is a perfect fit for your system.
Quality Assurance: All threaded flanges undergo rigorous dimensional inspections, including checks on thread accuracy and flange thickness. They also undergo pressure testing and receive material certification to eliminate any risk of leakage due to processing defects.
Technical Support: We provide on-site installation guidance, which includes selecting the right thread sealants and offering recommendations for tightening torque. This support helps customers avoid issues that may arise from improper installation.
Thread flanges are not a "one-size-fits-all" option, but in low-pressure scenarios that require frequent disassembly and assembly and have strict restrictions on welding, they are the preferred choice that balances efficiency and reliability. For further details on the product or selection suggestions, please feel free to contact our technical team.
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