Promech Pipe & Fabrication

Weld Neck Flange

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

Multi Metal Corporation is a leading manufacturer, exporter and supplier of stainless steel bends, carbon steel bends, and alloy steel bends in a complete range of radius and diameters. Steel pipe bends can be manufactured from a wide range of pipe materials – including low and high yield carbon steels, alloy steels, stainless steels, Cr-Ni alloys and titanium. We specialise in the manufacture of large and small size stainless steel bends and piggable bends in grades Duplex, 310S, 304L, 316L, 317L, 347, 321, 904L.

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.

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

Size1/2″ (15 NB) to 48″ (1200NB)
StandardsANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Pressure RatingsClass 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc.
Carbon Steel Weld Neck FlangesASTM 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 FlangesASTM A182 F202, F304/304L/304H, F316/316L, F316H, F316TI, F310, F321, F904L
Alloy Steel Weld Neck FlangesASTM A182 F1, F5, F9, F11, F22, F91
Special Alloy Weld Neck FlangesDuplex, Super Duplex, Nickel Alloys
Flange Face TypeFlate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Coating/Surface TreatmentAnti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
Value Added ServicesCNC Machining, Customised Flanges

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 elbow fittings 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 – Swage Nipples

At Multi Metal Corporation , all swage nipples are tested and are subject to strict inspection at each stage of the production process, from raw material purchasing to product dispatch. All raw material used in the manufacture of swage nipples are tested to ensure compliance with international standards and customer requirements.

Testing and Inspection of Swage Nipples:

Manufacturer Test Certificate as per EN 10204 / 3.1B, Raw Materials Certificate, Third Party Inspection, Buyer Inspection

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