Forged Flanges
Chuxin Flange Fitting Co., Ltd., formerly known as Yongxing Jinggong Pipe Fitting Factory, founded in 1994, is a non-regional high-tech enterprise specializing in the design, development, production, sales and after-sales of forged flanges. We provide steel base flange for square tubing, ASME flange cover, ASME lap joint flange and other products which are sold well all over the country and exported to overseas countries and regions.
Why Choose Us
Quality Control
In order to offer premium-quality products, Chuxin provides advanced inspection devices and complete inspection measures, builds a strict QC team to realize the quality control during the whole process from raw materials inspection, process detection to finished products and application.
Advanced Equipment
Our company has processing equipment and advanced testing instruments including hundreds of high-precision CNC lathes and desktop spectrometers, portable spectrometers, universal testing machines, impact testing machines, ultrasonic flaw detectors, metallographic detectors, Rockwell hardness testers, low-temperature cryogenic treatment tanks, etc.
Technology Certification
Our products are produced and inspected strictly in accordance with GB, AISI, ASTM, API, JIS, BS so as to control and safeguard the quality of products. We successively obtained ISO9001-2008 quality control system and CE (2014/68/EU) certification and API certification.
Professional after-sales service
Ensure the normal operation of the entire process from manufacturing to sales, the professional technical team is efficient and the after-sales service can meet the higher requirements of the third customers.
Types of Forged Flanges
JIS Neck Flange
A neck flange has a long tapered hub that transitions smoothly to the pipe or fitting it is welded to. It is typically butt-welded to the line, meaning the end is inserted into the flange and then welded around the circumference.
JIS Flat Welding Flange
Flat welding flange use ordinary steel plate as the material while butt weld flange use forged steel for manufacturing. Compared with flat weld flange, nominal pressure for butt weld flange is smaller.
JIS Flange Cover Steel Pipe Flange
Flange covers, also referred to as flange protectors or flange face protectors, are devices used to cover and safeguard flanged connections for flange protection.
ASME Socket Welding Flange
The socket weld flange refers to a flange that is inserted into the flange ring step at the end of the pipe and welded at the pipe end and the outside.
DIN Neck Flat Welding Flange
With neck flat welding flange is a special term, divided into with neck flat welding flange and with neck butt welding flange.
DIN PN Loose Flange
Loose flanges are a tried-and-tested method of connecting two pipes or lines together securely and tightly.
|
Type |
Forged Flange |
|
Size |
½” (15 NB) to 48″ (1200NB) |
|
Class |
150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc. |
|
Dimensions |
ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings |
|
Standard |
ANSI B16.5, ANSI B16.47, ANSI B16.36, ANSI B16.48, BS 4504, EN1092, UNI 2277/2278, DIN, JIS, SABS1123, GOST-12820 |
|
BS |
BS4504 , BS4504, BS1560, BS10 |
|
DIN |
DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673 |
|
Coating/Surface Treatment |
Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized |
|
In Form |
SORF, WNRF, BLRF, SWRF, LAP Joint, Threaded, Reducing, Spectacle, etc |
|
Flange Face Type |
Flat Face (FF), Raise Face (RF), Ring Joint (RJT) |
|
Connection Type |
Ring Type Joint, Lap-Joint Face, Raised Face, Flat Face, Large Male-Female, Small Male-Female, Large Tongue & Groove, Small Tongue & Groove |
Advantages of Forged Flanges
High strength
Forged flanges have higher strength and toughness due to the improved grain structure after forging.
01
Good corrosion resistance
Forged flanges are usually made of high-quality metal materials, such as stainless steel, carbon steel, etc., which have excellent corrosion resistance.
02
Good sealing performance
The connection surface of the forged flange has high flatness and precision after processing, which can achieve better sealing effect.
03
Compact structure
Forged flanges usually have a more compact structure than other types of flanges. This makes the forged flange easier to install and maintain, and takes up less space.
04
High reliability
Because the forged flange has high strength and good sealing performance, it has a long service life and can provide more reliable connections.
05
Petrochemical Industry
In the petrochemical industry, forged flanges are used to connect various pipelines Valves Pumps and other equipment ensure that the fluid is at high pressure Safe transmission in high temperature and corrosive media.
Natural Gas Industry
The natural gas transmission pipeline system has extremely high requirements for sealing and safety, and forged flanges are widely used due to their excellent sealing performance and reliability.
Power Generation
Power plants use forged flanges to handle high temperatures and pressures, making them essential for systems that transport steam, water, and other critical fluids.
Water Treatment and Waste Management
In water treatment and waste management, forged flanges offer durable, corrosion-resistant solutions for high-pressure pipes, ensuring reliable performance under demanding conditions.
Manufacturing Process of Forged Flanges
Raw material selection and cutting
The raw materials for forging flanges are generally selected from high-quality metal materials such as carbon steel, alloy steel, or stainless steel. According to the design drawings and process requirements, precise cutting of raw materials is carried out using equipment such as shearing machines and sawing machines.
Material heating
Send the prepared billet into the heating furnace for heating treatment. After heating, the billet should be maintained within an appropriate temperature range for immediate forging.
Forming process
The forming process of forging flanges mainly includes steps such as upsetting, stretching, punching, and forming.
Cooling and heat treatment
After forging, the flange needs to undergo appropriate cooling treatment to prevent deformation or cracking caused by thermal stress. Through heat treatment, forging stress can be eliminated, grain refinement can be achieved, and strength and toughness can be improved.
Precision machining and testing
The flange after heat treatment needs to be precision machined to achieve the final dimensional accuracy and surface quality requirements. After finishing, a comprehensive inspection of the flange is required to ensure that its quality meets the design requirements and relevant standards.
Packaging and factory delivery
Qualified forged flanges must be properly packaged to prevent damage or corrosion during transportation and storage. During packaging, it is necessary to apply anti rust oil or anti rust paint on the surface of the flange to further protect its surface quality.
Alignment: The flanges must be properly aligned to prevent stress on the connected pipes and ensure a uniform gasket compression.
Correct Gasket Selection: Choosing the appropriate gasket material is crucial to prevent leaks and maintain the integrity of the flanges joint.
Bolt Tightening: Following the manufacturer’s recommended torque values and tightening sequence is important for the proper installation of forged flanges.
Leak Test: After installation, conduct a pressure or leak test to ensure the flange joint is secure and leak-free.
Regular Inspection: Prompt repairs or replacements should be carried out to prevent system failures and ensure the safety of the overall operation.
Customization Process
Initial Inquiry & Consultation
An initial discussion your requirements with our engineering or sales team. We may may suggest adjustments or recommend optimal solutions based on your product details.
Material Selection
Specify the material grade and desired properties (e.g., strength, corrosion resistance). If uncertain, our team can recommend suitable materials.
Quote & Proposal
Feasibility of the design. Production process (open-die, closed-die, ring rolling, etc.). Material availability and lead times. Once evaluated, the sales team will provide a detailed quote.
Customer Approval
Review the quotation and purchase order will be sent by email to confirm the order. Include any additional instructions or special conditions.
Contract Agreement
If applicable, sign a formal agreement outlining responsibilities, timelines, and warranties.
Manufacturing
Utilize processes such as forging, cutting, machining, and heat treatment to shape and refine the flange to the desired specifications.
Quality Inspection
Conduct dimensional checks, non-destructive testing (NDT), and mechanical property testing to ensure the flange meets quality standards.
Packaging and Delivery
The flange product is packed securely to prevent damage during transit. Products are labeled with relevant information, such as material grade, part number, and order details.
Delivery Time: For stocks, we can send the goods to loading port within 7 days after receiving your deposit. For production period, it usually needs about 10days- 30days after receiving the deposit.
Package: Our staff wrapped flanges fittings with plastic foam individually, put them into wooden cases or pallets, bundled wooden cases with nylon rope.
Shipping Method: We offer sea and air shipping methods depending on your order quantity.
Payment Terms: Accepted payment methods are L/C, T/T, Paypal and Western Union.
MOQ: 1 pieces.
FAQ
We're well-known as one of the leading forged flanges manufacturers in China. Please feel free to buy customized forged flanges at competitive price from our factory. Contact us for more cheap products.
aluminum pipe flange, fixed flange, coffer flange