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My company has buy, examine, saw to slice, forge from the material, hot processing, the machine process packing hair luck the integral whole turn of production system.
Product Application
Petrochemical industry, energy industry, water treatment industry, environmental protection engineering, construction engineering, shipbuilding industry, valves, water pumps, power plants, steel mills: valves, water pumps, power plants, steel mills.
Quality Control
Company strictly according to ISO9000 standard organize produce and manage, build up valid circulate stable dependable quality management and guarantee system, strict material production equipments and quality of the control, consummate processing technology experience and forerunner examination experiment.
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Parameters |
Standard Specifications |
Special Customization |
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Variable diameter combination |
DN15×DN10 | DN25×DN15 | DN50×DN25 | DN100×DN80 (Regular stock) |
DN300×DN200 extra-large gauge |
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Pressure rating |
Class 150 | 300 | 600 | 900 |
Class 1500 High voltage |
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Thread type |
Large mouth end: RF sealing surface bolt connection |
Metric G thread /SAE oil port |
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Reduction ratio |
1:1.5 (DN50×DN33) | 1:2 (DN100×DN50) | 1:3 (DN150×DN50) |
1:5 Limit deflection |
Accessibility for Maintenance: Threaded connections are easy to disassemble, making maintenance and repair more straightforward. This accessibility is especially valuable in systems where components may need frequent inspection or replacement.
Cost-Effective: Threaded flanges are often more budget-friendly than flange types requiring welding. Since they eliminate the need for welding labor and equipment, they can lead to cost savings in material and labor expenses.
No Heat-Affected Zone (HAZ): Unlike welded connections that create a heat-affected zone (HAZ), threaded connections do not introduce heat into the pipe material.
Reduced Risk of Welding Defects: Welding can introduce defects such as porosity, cracks, or incomplete penetration.
Leak Resistance: When properly sealed with thread sealant or tape, threaded flanges provide a strong, leak-resistant connection and prevent fluid or gas from escaping.
Reduced Fire Hazard: In applications where fire safety is a concern, threaded flanges can be advantageous.
Since they do not require welding, there is no risk of sparks or flames during installation or maintenance, reducing the fire hazard.
Water Treatment and Supply Systems
In water treatment plants, threaded flanges are used for low-pressure connections that require secure, yet easily modifiable joints. Whether it's freshwater or waste treatment, these flanges allow easy maintenance of piping systems without significant downtime.
Compressed Air Systems
For applications like compressed air distribution, threaded flanges are an ideal choice. These systems generally operate at a lower pressure, making threaded connections practical. The ability to unscrew and reseal the connections also ensures quick fixes to any leaks or system adjustments.
Fire Protection and Sprinkler Systems
Fire suppression systems often use threaded flanges for their piping. Since these systems are low-pressure and sometimes require quick assembly, threaded flanges are the preferred choice. They also allow for swift and safe disassembly during inspections or when replacing outdated components.
Non-Hazardous Gas Piping
In situations where low-pressure gas (like natural gas or propane) is transported, threaded flanges are a safe and practical option. Since there is no welding involved, there's less risk when dealing with combustible gases, making them suitable for residential or light commercial gas supply systems.
Irrigation and Agricultural Systems
Threaded flanges are widely used in agricultural settings, particularly for irrigation systems. They allow farmers to quickly extend or modify their irrigation networks based on crop layout changes or seasonal needs.
Threaded pipe flange
The most common type of threaded flange features internal thread which aligns with external threads. This feature allows proper screwing of the pipes together without the process of welding.
Threaded flat face flange [FF]
The design of the threaded flat face flange possesses a flat face which allows to set a uniformity in connection of flange and surface of gasket. This setup is most used in low pressure systems.
Threaded reducing flange
This type of threaded flange allows easy connection of the pipe even with having different diameters even without welding. It is very useful for the system that needs to change the diameter of the pipe for better flow.
Threaded raised face flange [RF]
The raised face present in the design helps to concentrate the pressure on the base of the gasket which ultimately helps in enhancing the quality of the seal. These threaded flanges are highly recommended in systems with high pressure.
Threaded Lap joint flange
This flange type is typically applied in the piping system which demands frequent attachment and detachment for inspection, cleaning and maintenance. These are proven ideal for systems with low pressure areas.
Threaded blind flange
This type of the flange is applied at the end of the system to completely obstruct the flow of the system. It possesses the screw thread for connection at the end of the pipe. Also, the design of the flange doesn't have the center hole which works in obstructing flow of fluid.
Prepare the Pipe:
Ensure the pipe end is clean and free from burrs or imperfections.
Apply Thread Sealant:
Use a thread sealant or tape on the external threads of the pipe.
Align Flange and Pipe:
Carefully align the flange with the pipe and start threading them together.
Hand Tightens:
The hand tightens the flange until it's snug against the pipe.
Torque Bolts:
Use a torque wrench to tighten the bolts evenly, following the manufacturer's specifications.
Check for Leaks:
Conduct a pressure test after installation to ensure no leaks.
Marking & Packing
Products are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All flanges are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also, make custom marking on our products.
We're professional threaded flange manufacturers and suppliers in China, specialized in providing high quality customized products. We warmly welcome you to wholesale bulk threaded flange for sale here from our factory.
Forged Threaded Reducing Flange, Stainless Steel Threaded Reducer, Threaded Blind Flange(0/10)
