Threaded Flanges
Why Choose Us
Factory Strength
Shanghai KEK Pipeline Technology Co., Ltd. is a reputable AAA listed pipe fittings manufacturer in China, covering an area of 66666㎡ (80000+㎡ in Phase II), with more than 30 technicians and engineers.
Our Certifications
KEK has obtained ISO9001, ISO14001, ISO18001, CE/PED, API certification and TS pressure pipe component special equipment manufacturing license, as well as Russia's EAC continuous certification.
Advanced Equipment
It has a full set of the largest and most advanced equipment in China, including a 4000-ton hydraulic press and a 3000-ton three-way cold extrusion molding machine.
Product Traceability
Product traceability, all products are numbered and indexed by furnace number, production process number, and RT inspection number to ensure the unique traceability of the product.
When it comes to piping systems, ensuring a reliable and secure connection is essential for maintaining operational efficiency and safety. Threaded flanges are one of the most practical and widely used flange types, particularly in systems where welding is not possible or desirable. As a manufacturer of high-quality flanges, we understand the importance of providing durable, leak-proof solutions that meet industry standards. In this blog, we'll take an in-depth look at threaded flanges, including their features, benefits, applications, and installation process.
What are Threaded Flanges?
A threaded flange is a type of flange that is designed with internal threads, allowing it to be screwed onto the external threads of a pipe. This design eliminates the need for welding, which can be an advantage in certain applications where welding is impractical or undesirable. Instead, the threaded flange is screwed directly onto the pipe, creating a secure and tight connection.
Threaded flanges are most commonly used in smaller pipe sizes and applications where the piping system needs to be disassembled frequently. They are available in various sizes and materials to meet the demands of a wide range of industries.
Easy Installation and RemovalThreaded flanges can be easily installed by screwing them onto the pipe. This makes them ideal for applications where components need to be frequently assembled and disassembled. The ability to easily remove and replace a threaded flange without the need for special tools or equipment is a significant advantage, especially in industries that require regular maintenance.
No Welding RequiredOne of the most significant benefits of threaded flanges is that they do not require welding. This makes them an excellent choice for applications where welding is either not possible or not desired, such as in systems that cannot withstand the heat of welding or in environments where non-welded connections are necessary for safety reasons.
Leak-Proof SealsDespite not being welded, threaded flanges can provide strong, leak-proof seals when paired with the appropriate gasket. The internal threads on the flange create a tight connection with the external threads on the pipe, ensuring that the joint remains secure and leak-free under normal operating conditions. This makes them suitable for high-pressure applications when properly installed.
Compact and Cost-EffectiveThreaded flanges are often more compact than other flange types, making them ideal for installations where space is limited. They also tend to be more cost-effective, especially in smaller sizes, compared to flanges that require welding.
Carbon steel Blind Flanges
Often used for general-purpose applications.
Stainless Steel
Provides excellent corrosion resistance and is ideal for systems exposed to moisture or aggressive chemicals.
Alloy Steel
Suitable for high-pressure or high-temperature environments.
Installation of Lap joint flanges
Preparing the Pipe
The pipe must first be threaded to match the internal threads of the flange. It's crucial that the threads are clean, smooth, and properly aligned to ensure a secure connection. Any debris or damage to the threads can result in leaks or weak connections.
Threading the Flange onto the Pipe
Once the pipe is prepared, the threaded flange is screwed onto the pipe. The flange should be hand-tightened, and then further tightened using a wrench or other suitable tool. Care should be taken not to overtighten the flange, as this can damage the threads and create a potential leak point.
Gasket Installation
A gasket is often placed between the flange and the pipe to ensure a leak-proof seal. The gasket helps to compensate for any small imperfections in the threads and provides an additional layer of sealing. The gasket material should be chosen based on the type of fluid or gas being transported to ensure compatibility.
Bolting the Flange
After the flange is threaded onto the pipe, it is bolted to the companion flange on the other side. Bolts are used to tighten the connection and ensure that the flanges are securely joined. The proper torque should be applied to avoid over-tightening or under-tightening the bolts.
Maintenance and Inspection of Lap joint flanges
Regular Inspections
Like all flange types, threaded flanges should be inspected periodically for signs of wear, corrosion, or damage to the threads. Regular inspections will help detect potential issues before they lead to leaks or system failures.
Cheking for leaks
After installation, it's essential to conduct a pressure test to ensure the connection is leak-proof. Periodic tests should also be performed to check for any signs of leakage that may occur due to wear or loosening of the threads.
Cleaning and Gasket Replacement
If the flange is used in a system where contamination is a concern, regular cleaning and gasket replacement may be necessary to maintain system integrity. The gasket should be inspected for wear or degradation and replaced as needed to prevent leaks.
how to choose the right Flange?
Material Selection
Picking the right flange materials is the first stage in the machining process. The most popular materials for making flanges are alloy steel, carbon steel, or stainless steel. However, the ideal material often depends on the application's temperature, pressure, and corrosion resistance needs.
Material Cutting and Shaping
Following selection, the material is sliced and formed. Big metal plates are cut into smaller pieces to get the right size for the flange. The produced parts are then heated to the proper temperature to prepare them for further processing.
Application of Lap joint flanges
Oil and gas
In the oil and gas industry, threaded flanges are used in smaller pipelines or equipment where welding might not be feasible due to safety concerns or equipment limitations.
Water treat. & Food
Threaded flanges are commonly used in water treatment plants, where ease of disassembly and reassembly is crucial. They're are also used in food processing systems where ease of maintenance and cleaning is essential.
Chemical Processing
Threaded flanges are often used in chemical plants where systems may require disassembly for maintenance or cleaning. The absence of welding makes them ideal for systems that require frequent maintenance or modification.
water treatment
The pharmaceutical industry often requires clean and easily disassembled piping systems. Threaded flanges offer the necessary flexibility for cleaning and maintenance.
Threaded flanges offer a practical, cost-effective, and reliable solution for connecting pipes in systems where welding is not an option. They are easy to install and remove, making them ideal for applications requiring frequent maintenance or modification. With their versatility, threaded flanges are used across a wide range of industries, including chemical processing, oil and gas, water treatment, and more.
As a manufacturer of high-quality flanges, we provide a range of threaded flanges made from materials like carbon steel, stainless steel, and alloy steel to meet your system's specific needs. Whether you're working with high-pressure, corrosive, or low-pressure systems, we can help you select the right threaded flange for your application.
For more information or to find the right threaded flange for your system, don't hesitate to contact us. We're here to provide expert advice and reliable, durable flange solutions for all your piping needs.
Our Factory
Shanghai KAIKE Pipe Technology Co., Ltd. is a reputable AAA listed pipe fittings manufacturer in China,covering an area of 66666㎡ (80000+ ㎡in stage II) and with technician and engineers more than 30 personal. Kaike Group is made up of Shanghai Kaike Piping Technology, Shanghai Kaike Valve manufacture and one export company Shanghai Chainmill Industry, they are all based in Shanghai, which the economic center of China. KAIKE has reached up to an annual output of pipe fittings of 20,000 tons. KAIKE has the ability to produce by various materials like carbon (low temperature) steel, stainless steel, duplex steel, alloy steel, nickel base alloy and special materials as requested according to GB, SH, Hg, JB, SY, ASME/ANSI, MSS, JIS, DIN, BS,GOST etc.Its main products include BW pipe fittings(SMLS or welded), steel flange, forged pipe fittings as well as prefabricated spools and manifolds,and also can produce according to customers' drawings and requirements.
Certificate
FAQ
We're professional threaded flanges manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale high-grade threaded flanges at low price from our factory. Contact us for cheap products.