Weld Neck Flanges / WNRF Flanges


We Vishad Forge is one of the leading Manufacturer, Exporter & Supplier of Weld Neck Flanges, WNRF Flanges, Carbon Steel Weld Neck Flanges, SS Weld Neck Flanges, Alloy Steel Weld Neck Flanges in India.

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We are the largest manufacturers of Weld Neck Flanges & have a huge stock of 304 Weld Neck Flanges, 316 Weld Neck Flanges, ASTM a105 Weld Neck Flanges, ASTM a182 Weld Neck Flanges as per ASME / ANSI B16.5 Weld Neck Flanges, ANSI B16.47 Weld Neck Flanges, Din Weld Neck flanges, JIS Weld Neck flanges & uni Weld Neck flanges Standards.

We offer high quality Forged Flanges in all size, classes & dimensions like Class 150 Weld Neck Flanges, Class 300 Weld Neck Flanges, Class 600 Weld Neck Flanges, Class 900 Weld Neck Flanges, Class 1500 Weld Neck Flanges & Class 2500 Weld Neck Flanges

Boston Export is the largest Manufacturer, Supplier, and Exporter of Welding neck Flange, WN forged Flange, welding-neck Flanges, ASME 16.5 Weld Neck Flanges / WNRF Flanges in forged steel, Stainless Steel, AS, CS, etc. Weld Neck Flange is flange that designed to be joined to a piping system by butt welding. This kind of flange include lots of specification, Weld neck Flange is expensive because of its long neck and cost of people for contact WN flange with pipeline or fitting, but is preferred for high-stress applications. The necks, or hubs, transmits stresses to the pipeline. The gradual transition of thickness from the base of the hub to the wall thickness at the butt weld provides important reinforcement of the Weld Neck flange. The bore of Weld-Neck flange matches the bore of the pipeline, reducing turbulence and erosion.

Product Specifications

Weld Neck Flanges are available in the following specifications:

Type WN Forged Flange, Weld Neck Flanges – WNRF
Material Stainless Steel Weld Neck Flanges :ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L
Carbon Steel Weld Neck Flanges: ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70
Alloy Steel Weld Neck Flanges: ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91 Duplex Steel Weld Neck Flanges: ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61
Nickel Alloy Weld Neck Flanges: Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22, C276, Copper Nickel, Hastelloy, Nickel, Monel, Inconel, Alloy20.
Standard ANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48 ,JIS,DIN,BS4504,SABS1123,EN1092-1, UNI,AS2129,GOST-12820
DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673 B.S : BS4504 , BS4504, BS1560, BS10
Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
Size 1/2-78 inch (DN15-DN2000)
Pressure ANSI class 150,300,600,1500,2500, DIN PN6,PN10,PN16,PN25,PN40,PN64,PN100,PN160
Usage Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects etc.