Threaded Flanges

Your Professional Threaded Flanges Supplier

Shanxi Hongkai Forging Co., Ltd. is located in China Energy Heavy Chemical Industry Base. Dingxiang County, the hometown of forging in Shanxi Province. Convenient transportation, abundant coal and power resources, fast communication and superior environment. Mainly produce flanges and forgings of various specifications. Application in piping installation, pressure vessel, equipment accessories.

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Why Choose Us

Our Service
With strong technical force, advanced production technology, perfect quality inspection, and reliable after-sales service, it provides a basis for supervision and cooperation for many customers at home and abroad.

Our Certificate
The company Excellent Supplier of 2019 Safety production standardization certificate Quality management system certification.

Production Market
The products are mainly exported. It is exported to Europe, America and other countries and regions. The product quality is good, and the service is attentive. It is deeply appreciated and trusted by customers and users at home and abroad, and has won a high reputation. They have become one of the largest flange and forging suppliers in China.

Our Factory
Shanxi Hongkai Forging Co., Ltd. is located in China Energy Heavy Chemical Industry Base. Dingxiang County, the hometown of forging in Shanxi Province. Convenient transportation, abundant coal and power resources, fast communication and superior environment.

Advantages of Threaded Flanges

Ease of Installation and Disassembly:

Effortless installation and disassembly without the need for welding, facilitating maintenance and repairs.

Suitability for Restricted Areas:

Particularly suitable for hazardous welding environments.

Applicability to High-Pressure Systems:

Suitable for small-diameter, high-pressure temperature applications, avoiding issues associated with welding.

Use with Special Materials:

Can be employed with materials challenging to weld successfully.

No Need for Special Equipment:

Due to the absence of welding requirements, specialized welding equipment or skilled welders are not necessary.

Parameter

Place of Origin	Jiangsu，China
Model Number	Customized/Standard
Standard	GB，JB，HG，ANSI，JIS，DIN
Color	Customizable
Specification	Customized/Standard
MOQ	1000
Size	Customized/Standard
Transport Package	Plastic+Carton+Customizable
Application	For Water, Oil and Gas Industrial
Type	Slip-On, Weld-Neck, Blind, Threaded

Specifications Of Threaded Flanges

Dimensions	ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard	ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size	1/2″ (15 NB) to 48″ (1200NB)
Class / Pressure	150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type	Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Common Uses of Threaded Flanges

Ansi B16.5 Class150 Welding Neck Flanges

Water Treatment and Supply Systems
In water treatment plants, threaded flanges are used for low-pressure connections that require secure, yet easily modifiable joints.

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.

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.

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.

Screwed Flanges Production Range

Size	1/2″ (15 NB) to 48″ (1200NB)
Standards	ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Pressure Ratings	Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 \| PN6, PN10, PN16, PN25, PN40, PN64 etc.
Carbon Steel Threaded Flanges	ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8
Stainless Steel Threaded Flanges	ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L
Alloy Steel Threaded Flanges	ASTM A182 F1, F5, F9, F11, F22, F91
Special Alloy Threaded Flanges	Duplex, Super Duplex, Nickel Alloys
Flange Face Type	Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Coating/Surface Treatment	Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
Value Added Services	CNC Machining, Customised Flanges

FAQ

Q: What are threaded flanges used for?

A: A threaded flange is a device that connects a device that you can secure to a pipe length without the need for welding. With tapered thread, the threaded flange can be tightened onto the pipe without any leakage. However, a seal weld is commonly used when it is appropriate.

Q: What is the difference between a companion flange and a threaded flange?

A: Threaded flanges have a female NPT thread in the middle for connecting to male NPT threaded piping. They are also sometimes called companion flanges, screw flanges, or NPT flanges. Threaded flanges are frequently used to create reduced connections.

Q: Which type of threaded flange uses a full face gasket?

A: Flat face flanges
The full-face gasket is typically used with flat face flanges but can also be used with RF flanges. It sits on the raised flange faces but has the same outside diameter of the flange. For that reason, it has to have holes for the bolts securing the flanges to pass through.

Q: How to tighten a threaded flange?

A: It is generally recommended to tighten the bolts in a crosswise sequence, first tightening one bolt and then its opposite, to ensure the flange is evenly stressed and forms a strong connection. Upon completing these steps, the installation of threaded flanges is successfully finished.

Q: How to use a threaded pipe flange?

A: How does threaded flange work? Threaded flanges work by screwing the threaded pipe into the female-threaded interior surface on the flange. Once the pipe is securely tightened, the required gasket can be placed between the flange connection's two raised faces to ensure a tight seal.

We're well-known as one of the leading threaded flanges manufacturers and suppliers in China. If you're going to wholesale high quality threaded flanges with competitive price, welcome to get more information from our factory. Also, customized service is available.

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