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Product Description
We offer a comprehensive range of large-diameter flanges manufactured in accordance with ASME B16.47 Series A (MSS SP-44), Series B (API 605), and AWWA C207 standards. These flanges are engineered for high-performance industrial applications such as oil & gas, petrochemical, power generation, and waterworks systems.
ASME B16.47 Series A (MSS SP-44):Types: Welding Neck, Blind，Pressure Ratings: 150LB, 300LB, 400LB, 600LB, 900LB
Size Range: 12" to 60"
Designed for higher pressure applications with thicker flange walls and heavier bolting.
ASME B16.47 Series B (API 605): Types: Welding Neck, Blind, Pressure Ratings: 75LB, 150LB, 300LB, 400LB, 600LB, 900LB
Size Range: 26" to 60"
Ideal for lighter-duty service with a more economical design compared to Series A.
AWWA C207 Flanges:Types: Ring Flange, Blind Flange, Hub Flange, Classes: Class B, D, E, F
Size Range: 4" to 144"
Commonly used in water pipelines, treatment plants, and irrigation systems.
| Standard: | ||||||||||
| Flange type： | welding neck, slip on,blind,lap joint,threaded,socket welding | |||||||||
| Size: | 1/2''-24'' | |||||||||
| Pressure class: | 150LB,300LB,400LB,600LB,900LB,1500LB,2500LB | |||||||||
| Sealing type： | Flat face（FF),Raised face(RF),Ring Joint（RTJ) | |||||||||
| Material： | Carbon steel ASTM A 105/A 105N,A694 F42-F70,A-350LF1/LF2, | |||||||||
| Stainless steel ASTM A 182 F304/304L,F316/316L | ||||||||||
Flange production process
Factory Showcase
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FAQ
Q1: What are the common types of flanges you supply?
A: We supply a wide range of forged steel flanges, including Blind Flange, Weld Neck Flange, Slip On Flange, Socket Weld Flange, Threaded Flange, and Lap Joint Flange, all conforming to international standards like ANSI/ASME B16.5 and EN1092-1.
Q2: What materials are available for your flanges?
A: We offer flanges in various materials such as Carbon Steel (A105), Stainless Steel (SS304, SS316), and Alloy Steel (F11, F22, etc.). Material customization is available based on project requirements.
Q3: What standards and pressure classes do you support?
A: Our flanges conform to standards including ANSI/ASME B16.5, EN 1092-1, and DIN. Pressure classes range from Class 150 to 2500 (ANSI) and PN6 to PN100 (EN/DIN).
Q4: Do you provide sealing face options like RF or RTJ?
A: Yes. We offer Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ) sealing surfaces depending on pressure, sealing performance, and customer requirements.
Q5: What surface treatments are available?
A: Surface treatments include anti-rust oil, black painting, galvanizing, yellow transparent varnish, and custom coatings for corrosive environments.
Q6: Can you provide certificates and test reports?
A: Yes. We provide MTC (EN10204 3.1/3.2), as well as ISO, CE, FM/UL certificates (depending on product type). Third-party inspections like SGS, BV, and TUV are also available.
Q7: What is your typical production lead time?
A: For standard flanges, lead time is usually 30–35 days. For urgent needs or large volumes, we can offer fast-track production based on stock and raw material availability.
Q8: Do you accept OEM branding or customized packaging?
A: Yes. We support OEM logo stamping, custom labels, and export packaging with your brand or specifications.
Q9: Can I request a sample before confirming an order?
A: Absolutely. We are happy to provide free or paid samples for quality inspection, depending on the product type and destination.
