PIPE FLANGES
From Standard Flanges to Custom Flanges, we offer a wide variety of pipe flanges made from high-quality materials including carbon steel, stainless steel, alloy steel, duplex stainless steel, and other specialized metals. Our flanges are designed to meet various industry standards, including AWWA, ANSI, ASME, DIN, JIS, GB and BS. Trust us to provide reliable, customized solutions to protect your piping system.
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What are different types of Pipe Flanges?
Industrial pipe flanges come in several key types, each designed for specific applications:
- Weld neck: Offers superior strength for high-pressure and high-temperature systems
- Slip-on: Easy to install and align, cost-effective for lower pressure applications
- Blind: Solid disc used to seal off pipe ends or openings
- Threaded: Allows quick assembly without welding, suitable for low-pressure systems
- Lap joint: Accommodates thermal expansion and frequent dismantling
- Socket weld: Provides excellent leak resistance for small-diameter, high-pressure pipes
- Orifice: Designed to hold flow measurement devices
- Reducing: Connects pipes of different diameters
Selection depends on factors like pressure, temperature, ease of maintenance, and system requirements
Standards:
ASME/ANSI, EN/DIN, GOST, JIS
Pressure:
PN6, 10, 16, 25, 40
Class150, 300, 600, 900, 1500
Material:
Carbon Steel, Stainless Steel, Aluminum, Nickel Alloys
Standards:
ASME/ANSI, EN/DIN, GOST, JIS
Pressure:
PN10, 16, 25, 40, 63, 100, 160
Class150, 300, 600, 900, 1500, 2500
Material:
Carbon Steel, Stainless Steel, Aluminum, Nickel Alloys
Standards:
ASME/ANSI, EN/DIN, GOST, JIS
Pressure:
PN2.5, 6, 10, 16, 25, 40
Class150, 300, 600, 900, 1500, 2500
Material:
Carbon Steel, Stainless Steel, Aluminum, Nickel Alloys
Standards:
ASME/ANSI, EN/DIN, GOST, JIS
Pressure:
PN2.5, 6, 10, 16, 25, 40, 63, 100, 160
Class150, 300, 600, 900, 1500, 2500
Material:
Carbon Steel, Stainless Steel, Aluminum, Nickel Alloys
Standards:
ASME/ANSI, EN/DIN, GOST, JIS
Pressure:
PN10, 16, 25, 40, 63, 100
Class150, 300, 600, 900
Material:
Carbon Steel, Stainless Steel, Aluminum, Nickel Alloys
Standards:
ASME/ANSI, EN/DIN, GOST, JIS
Pressure:
PN6, 10, 16, 25, 40
Class150, 300, 600
Material:
Carbon Steel, Stainless Steel, Aluminum, Nickel Alloys
Standards:
ASME/ANSI, EN/DIN, GOST, JIS
Pressure:
PN6, 10, 16, 25, 40
Class150, 300
Material:
Carbon Steel, Stainless Steel, Aluminum, Nickel Alloys
Our custom flanges are made to specific sizes and materials for unique applications. Can be modified from standard designs or created from scratch to meet various industry requirements.
What are Industry Standards of Pipe Flanges?
ANSI (American National Standards Institute):
Sizes: Typically from 1/2″ to 24″ for B16.5; larger sizes for B16.47.
Pressure Ratings: Ranges from 150 LB to 2500 LB.
ASME (American Society of Mechanical Engineers):
Sizes: Similar to ANSI standards.
Pressure Ratings: Up to 2500 LB.
DIN (Deutsches Institut für Normung):
Sizes: DN10 to DN4000.
Pressure Ratings: PN6 to PN400.
JIS (Japanese Industrial Standards):
Sizes: Ranges from 10A to 1500A.
Pressure Ratings: From 5K to 63K (K is a unit of pressure).
Industries We Serve
Our flanges connect pipes carrying various chemicals, acids, and corrosive substances, where frequent maintenance and inspection are necessary
Our flanges are useful in the petrochemical industry and can bear high pressure and temperature.
Our flanges connect pipes carrying liquids and gases, ensuring hygiene and facilitating quick disassembly for cleaning.
Our flanges create pressure-tight connections that withstand high pressures and temperatures, facilitating the safe transport of hydrocarbons
our flanges connect pumps, filters, and piping systems, providing the strength and durability needed to handle rigorous operational conditions
Used to connect turbines, boilers, and heat exchangers in both renewable and conventional power plants, ensuring efficient fluid flow under high-pressure conditions.
Compliance Certificates
Why Choose LONGAN Flange?
- Expertise in Flange Manufacturing: Longan Flange specializes in producing a wide range of flanges and custom non-standard products, ensuring we meet diverse industry needs with precision.
- Advanced Manufacturing Capabilities: With over 100 CNC lathes, 10 machining lathes, and 16 high-precision machining centers, we leverage advanced technology for efficient and high-quality production.
- Rigorous Quality Assurance: Our independent laboratory equipped with 15 testing devices ensures extensive testing of each flange, guaranteeing they meet specifications and providing reliable performance.
- Commitment to Customization and Standards: We offer tailor-made solutions while adhering to established industry standards, ensuring seamless compatibility and exceptional quality tailored to your project requirements.
Frequently Asked Questions (FAQs)
Yes, we are the manufacturer. Long’an Flange specializes in manufacturing various types of flanges and customizing non-standard products.
Our pricing is based on quality advantages at the same price point
Yes, we provide certifications. We have obtained many domestic and international certifications, including CE, Quality Management System, and Environmental Management System certifications.
We accept Letter of Credit (L/C), Telegraphic Transfer (T/T), and Document against Payment (D/P) as payment methods.
When you buy forged flange parts, you don’t have to buy a certain amount. But if you want a length that’s more than 2 meters, you’ll need to buy at least 10 pieces.
It usually takes us 2 to 4 weeks to make your order, but it depends on how complicated it is and how busy we are.
Yes, we offer OEM services for customized non-standard flanges.
We package our big, heavy flanges in wooden crates and the small, light ones in cardboard boxes. The choice depends on what kind of flange it is, its size, weight, and how far it needs to be transported.
We offer many ways to ship your items, like by truck or boat. We’ll find the best way for you based on your needs.
When making flanges, we mainly use stainless steel, but we also use other special materials based on what the flange is for and what the customer wants.
