Flanges

Weld Neck Flanges

ASME/ANSI B16.5 WELD NECK (WN) PIPE FLANGES MANUFACTURER IN INDIA

MANUFACTURER/EXPORTER OF HIGH QUALITY WELD NECK FORGED FLANGES

CARBON, ALLOY, STAINLESS STEEL WELD NECK FLANGES

Sunmax Steel & Engg. Co. is a specialised manufacturer of high quality ASME/ANSI/DIN standard weld neck flanges in India. We offer immediate delivery programs for standard size of carbon steel weld neck flanges and stainless steel weld neck flanges.

Weld neck pipe flanges are connected to the pipe by welding the pipe to the neck of the pipe flange, which helps to pass on the stress from the weld neck to the pipe itself. This also reduces high stress concentration at the base of the hub of the weld neck pipe flanges. Weld neck pipe flanges are generally used in high pressure applications, where hot or cold temperatures exist. The inside diameter of a weld neck pipe flange is machined to match the inside diameter of the pipe.

We offer weld neck pipe flanges manufactured at our facility to companies in various industries including shipbuilding, power generation, petrochemical plants, oil refineries, waste water treatment plants, paper mills, pharmaceutical plants and turnkey projects among others.

Our products are widely exported to countries and regions such as the United States, Europe, Russia, Turkey, Malaysia, the UAE, Saudi Arabia, Iran, Brazil, Chile, Mexico, South Africa, Jordan, Tunisia, Vietnam, Indonesia, Thailand, Singapore, Colombia, and Sri Lanka.

Welding Neck Flange, WN Forged Flanges, Weld Neck Flanges Production Range

Stainless Steel Weld Neck (WN) Flange

Alloy Steel, Carbon Steel Weld Neck (WN) Flange

1-Weld Neck Flange | 2-Butt Weld | 3-Pipe or Fitting

Size: 1/2″ (15 NB) to 48″ (1200NB)

Standards: ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings

Pressure Ratings: Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc.

Carbon Steel Weld Neck Flanges: 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

Stainless Steel Weld Neck Flanges: ASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L

Alloy Steel Weld Neck Flanges: ASTM A182 F1, F5, F9, F11, F22, F91

Special Alloy Weld Neck Flanges: Duplex, Super Duplex, Nickel Alloys

Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Coating/Surface Treatment: Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized

Value Added Services: CNC Machining, Customised Flanges

Marking & Packing

Products are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All flanges are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also, make custom marking on our products.

Quality Assurance

At Sunmax Steel & Engg. Co. , all fittings and flanges are subject to strict inspection at each stage of the production process, from starting material purchasing to product dispatch. They are visually examined for conformity to ASTM, ASME, MSS, DIN, EN, and JIS codes and standards. Upon request, official certified Inspection Agencies can be called in to witness the material reports, dimensions and quality conformity of products.

Test Certificates:

Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report

Technical Information – Specifications, Dimensions Weld Neck Flanges

• ANSI/ASME B16.5 Welding Neck Flange 150lb
• ANSI/ASME B16.5 Welding Neck Flange 300lb
• ANSI/ASME B16.5 Welding Neck Flange 400lb
• ANSI/ASME B16.5 Welding Neck Flange 600lb
• ANSI/ASME B16.5 Welding Neck Flange 900lb
• ANSI/ASME B16.5 Welding Neck Flange 1500lb
• ANSI/ASME B16.5 Welding Neck Flange 2500lb
• ANSI/ASME B16.47 Series B Weld Neck Flange 75lb
• ANSI/ASME B16.47 Series B Weld Neck Flange 150lb
• ANSI/ASME B16.47 Series B Weld Neck Flange 300lb
• ANSI/ASME B16.47 Series B Weld Neck Flange 600lb
• ANSI/ASME B16.47 Series B Weld Neck Flange 400lb
• ANSI/ASME B16.47 Series B Weld Neck Flange 900lb
• ANSI/ASME B16.47 Series A (MSS SP44) Weld Neck Flange 150lb
• ANSI/ASME B16.47 Series A (MSS SP44) Weld Neck Flange 300lb
• ANSI/ASME B16.47 Series A (MSS SP44) Weld Neck Flange 400lb
• ANSI/ASME B16.47 Series A (MSS SP44) Weld Neck Flange 600lb
• ANSI/ASME B16.47 Series A (MSS SP44) Weld Neck Flange 900lb