Ecostain Rainbow is a leading weld neck flanges manufacturer in India. We strictly adhere to the ASME/ANSI/IS/DIN/BS/JIS quality standards. We offer a comprehensive selection of weld neck flanges readily available in standard sizes for immediate delivery. As a weld neck flanges manufacturer in India, our commitment to quality is evident in the use of top-grade materials and strict adherence to international standards. We manufacture weld neck flanges, along with a variety of other flange types, ranging in size from ½ inch to a staggering 48 inches. No matter your project requirements, Ecostain Rainbow has the weld neck flanges you need to get the job done perfectly.
Weld neck flanges are also known as high-hub flanges, and are often used for critical applications involving high pressures, high temperatures and cyclic loading in pipelines. These flanges are designed with a long tapered neck that transitions smoothly to the pipe by welded connection. The neck or hub provides reinforcement and support to the pipe, reducing stress concentrations and enhancing structural integrity. The flange features a raised face or a ring-type joint facing to provide a sealing surface. These flanges are ideal for Power plants, Petrochemicals and Offshore platforms.
All Flanges with standard sizes and materials are readily available in stock for immediate delivery. "Looking for large diameter Flanges ? Contact us today for Customized Flanges.
High Strength: Weld Neck Flanges provide a strong and rigid connection, capable of withstanding high pressure and temperature conditions.
Leak-Proof: The full penetration weld between the neck and the pipe ensures a leak-proof connection, minimizing the risk of fluid leakage.
Reduced Stress Concentration: The smooth transition from the neck to the pipe reduces stress concentration, preventing fatigue failure and enhancing the structural integrity of the joint.
Suitability for High-Pressure Applications: Weld Neck Flanges are ideal for applications requiring high-pressure containment, such as in oil and gas, power generation, and chemical processing industries.
We conduct a series of testing procedures to ensure the quality, reliability, and performance of our Flanges.
These tests are conducted at various stages of manufacturing, from raw material inspection to the final product testing.
| Flanges | Specifications |
|---|---|
| Flanges Types | Weld Neck |
| Class | 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150, ASA 300, PN 6,10,16,25, 40,64,100,160 ETC. available with NACE MR 01-75 |
| Size | 1/2″ (15 NB) to 48″ (1200 NB) |
| Standard | ANSI/ASME B16.5, ANSI/ASME B16.47 Series A and Series B, MSS SP44, ASA, API 605, API 6A, AWWA, As per Custom Drawings |
| Pressure Rating | Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc |
| Type | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Lap-Joint Face (LJF), Large Male-Female (LMF), Small Male-Female (SMF), Large Tongue & Groove, Small Tongue, Groove |
| Grades | |
|---|---|
| Stainless Steel | ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L |
| Duplex Steel | ASTM/ASME A/SA 789, 790 – UNS NO S 31803, S 32205, S 32550, S 32750, S 32760. |
| Carbon Steel | ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42, F46, F48, F50, F52, F56, F60, F65, F70, A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8 |
| Alloys Steel Flanges | ASTM A182 F1, F5, F9, F11, F22, F91 |
| Special Alloy Flanges | Duplex, Super Duplex, Nickel Alloys |
| Flange Face Type | Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Coating/Surface Treatment | Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Nickel Alloys | Nickel Alloys 200, Nickel Alloys 201 |
| Hastelloy | Hastelloy C-22, Hastelloy C-276, Hastelloy C-2000, Hastelloy C-4, Hastelloy X, Hastelloy B, Hastelloy N, Hastelloy G |
| Inconel | Inconel 600, Inconel 601, Inconel 625, Inconel 625LCF, Inconel 686, Inconel 718, Inconel 800, Inconel 825, Inconel X-750 , Inconel 690, Inconel 602, Inconel 617, Inconel 925, Inconel A-289, Inconel AL-6XN, AL-904L |
As per International Industrial standards we provide all the necessary certifications. We provide certification and documentation, including material test reports (MTRs), inspection reports and compliance certificates to ensure product quality and compliance with standards and specifications.
These testing procedures ensure that flanges manufactured by us meet the standards, performance, and regulatory compliance. Our flanges meet stringent quality requirements and provide reliable performance in different industrial applications.
Ready to elevate your industrial operations with top-tier valve solutions? Look no further than ‘Ecostain Rainbow Engineering Exports’, where excellence meets innovation in every valve we manufacture.
With decades of experience in the industry, 'Ecostain Rainbow’
witnessed the critical importance of utilizing high-quality Flanges that meet international standards.
Whether you are in Oil and Gas, petrochemical, power generation, or any other industry relying on efficient
and reliable piping systems, investing in high quality valves is essential. Don't compromise on safety,
performance, or longevity. Partner with trusted weld neck flanges manufacturers in India like us ‘Ecostain
Rainbow
Engineering Exports’, who prioritize quality and adherence to standards, ensuring your projects are built to
last.
Contact us today to
explore our full range of industrial
valves, pipe fittings, pipes
& tubes, flanges and experience the excellence of our products
and how we can support your piping needs with our expertise and premium-grade valves. Let's build a
robust infrastructure together.
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