Your Professional Carbon Steel Flange Supplier
Henan Shuangzhong Intelligent Technology Co., Ltd., an expert in precision manufacturing and pipeline system solutions, was founded in 1999. We are a professional manufacturer specializing in precision machining customization, pipeline equipment and pipe fittings customization, as well as the manufacturing and processing of rubber hoses.
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![ASTM A350 LF2 Flange for Low Temperature]()
ASTM A350 LF2 Flange for Low TemperatureName:ASTM A350 GR. LF2 CL.1 FlangeSize：1/2 ~ 24Sealing Surface Type： RF (Raised Face), RTJ (Ring Joint, suitable for high voltage Class 600+), FF (Flat Face), MFM (Concave-convex Face)Flange -
![ASME B16.5 ASTM694 Gr.F60 Flange]()
ASME B16.5 ASTM694 Gr.F60 Flange1. Name:ASME B16.5 ASTM694 Gr.F60 Flange. 2. Size: 1/2-72. 3. Grade:150#,300#,600#,900#,1500#,2500#. 4. Type：Weld Neck Flanges, Slip-On Flanges, Socket Weld Flanges, Threaded Flanges, Blind Flanges, -
![Carbon Steel Lap Joint Flange]()
Carbon Steel Lap Joint FlangeProduct Name：Carbon Steel Lap Joint Flange. Material: Carbon steel (e.g., A105, Q235, 20#), featuring good cost - effectiveness, sufficient strength for general - purpose applications, with tensile -
![A105 Carbon Steel Flange]()
A105 Carbon Steel FlangeProduct name：A105 Carbon Steel Flange. Material: ASTM A105. Our product line includes: Slip on flange, WN flange, Long WN flange, Threaded flange, SW flange and Blind flange.. Production -
![Carbon Steel Plate Flange]()
Carbon Steel Plate FlangeProduct name：Carbon steel plate flange. Material type: Carbon steel is the main raw material, common grades include Q235, 20#, A105, A36, etc.. Nominal diameter: DN15-DN2000 (1/2-80) -
![Carbon Steel Slip On Flange]()
Carbon Steel Slip On FlangeProduct name: Carbon steel slip on flange. Material: A105, A36, etc.. Product type: Slip on flange, WN flange, Long WN flange, Threaded flange, SW flange and Blind flange.. Nominal diameter: -
![Carbon Steel Threaded Flange]()
Carbon Steel Threaded FlangeProduct Name: Carbon Steel Threaded Flange. Material: Carbon Steel (Grades Available: A105, A36, etc.). Product Types:Slip-on Flange, Weld Neck Flange (WN Flange), Long Weld Neck Flange (Long WN
Why choose us
One-Stop Customized Solutions
We are committed to providing customers with one-stop customized solutions — from design support and precision manufacturing to quality assurance — to meet the diverse needs of various industries for high-performance, high-precision, and high-reliability industrial components.
Certification
We ensure quality through comprehensive system certifications: the company has passed the ISO 9001:2015 quality management system certification and the American Petroleum Institute (API) quality certification system.
Sales Market
Our products have been successfully exported to many countries and regions around the world, including the United States, Canada, Germany, India, Malaysia, Pakistan, the United Arab Emirates, Egypt, and the Middle East. We have earned the trust and praise of overseas customers.
On-Site Quality Supervision
We dispatch professional quality inspection teams to supervise the production of steel pipe fittings and rubber hoses. From raw material entry to the shipment of finished products, we maintain strict quality control throughout the process and accommodate special customer requirements, such as product identification and packaging methods.
Product Parameters
|
Parameter |
Details |
|
Product Name |
Carbon Steel Lap Joint Flange |
|
Material |
Carbon steel (e.g., A105, Q235, 20#) |
|
Tensile Strength |
375-565MPa |
|
Pressure Rating |
Class 150, 300 (suitable for low to medium pressure) |
|
Nominal Diameter |
DN15 - DN600 (1/2" - 24")(Customizable) |
|
Design Feature |
Consists of a loose flange ring and a stub end (welded to the pipe), the flange ring can rotate freely around the stub end |
|
Standards Compliance |
ASME B16.5, ASTM A105 |
Material Performance Comparison
|
Material |
Tensile Strength (MPa) |
Corrosion Resistance |
Cost Performance |
Applicable Pressure Range |
|
Carbon Steel (for lap joint flange) |
375-565 |
General (prone to corrosion in humid/acidic environments, improved with surface treatment) |
High |
Low to medium pressure |
|
304 Stainless Steel |
515-620 |
Good (resistant to general corrosion) |
Moderate |
Medium pressure |
|
316 Stainless Steel |
515-620 |
Excellent (resistant to chloride corrosion) |
Low |
Medium to high pressure |
Service and Customization
|
Service Type |
Options |
Lead Time |
|
Custom Sizing |
Non-standard diameter, thickness according to customer requirements |
7-15 days |
|
Surface Treatment |
Anti-rust painting, galvanizing, pickling (to enhance corrosion resistance) |
3-5 days |
|
Certifications |
Material Test Report (MTR), Factory Quality Certificate, ISO 9001 |
Included |
|
Packaging |
Wooden crates, Pallets with moisture-proof film, Custom packaging with logo |
1-2 days |
|
Order Flexibility |
MOQ 1 piece, Sample orders available, Urgent orders with shortened lead time |
7-15 days |
Product Application and Selection
|
Industry |
Recommended Pressure Rating |
Key Advantages in Application |
|
Oil & Gas (Onshore/Auxiliary Systems) |
Class 150-300 |
Easy installation, cost-effective, suitable for low-pressure auxiliary pipelines (water injection, fuel gas) |
|
Chemical Processing (Neutral Fluids) |
Class 150-300 |
Convenient for disassembly and maintenance, suitable for transporting neutral chemicals |
|
Municipal Engineering |
Class 150 |
Adaptable to pipeline misalignment, suitable for water supply and drainage pipelines |
|
Fire Protection Systems |
Class 150-300 |
Quick installation, ensures rapid connection of fire pipelines |
|
Mining (Coal Mine) |
Class 150 |
Resistant to certain abrasion, suitable for water supply and slurry transportation pipelines in mines |
A lap joint flange is an easy and effective way to connect two pieces of pipe. Here are some benefits:
Variety of Materials: Lap joint flanges come in materials like steel, brass, and stainless steel, so you can pick the best one for your piping system.
Strong and Durable: Lap joint flanges are tough and can handle high pressure and weight, making them a great choice if you don’t plan to take them apart.
Easy to Install: Installing a lap joint flange is simple. You just need a few screws to get the job done.
Great Design: These flanges are user-friendly, easy to install, and maintain. They can also be customized for different piping needs.
Our Certificate
FAQ
As one of the leading carbon steel flange manufacturers in China, we warmly welcome you to buy high quality carbon steel flange for sale here from our factory. Good service and reasonable price are available.
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