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Weld Neck Flange

Weld Neck Flange

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₹1,200.00

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    Category: Flanges, Weld Neck Flange

    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.
    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)

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        A Weld Neck Flange (WN Flange) is a type of flange designed for high-pressure and high-temperature applications, commonly used in piping systems and industrial equipment. Its distinguishing feature is the long, tapered hub that gradually transitions into the pipe, providing excellent reinforcement and reducing stress concentration at the base. This design ensures durability and reliability in demanding environments.

        Applications of Weld Neck Flanges:

        Weld Neck Flanges are widely used in industries where durability, safety, and efficiency are critical, including:

        • Oil and Gas Industry: For pipelines carrying crude oil, natural gas, and refined products.
        • Petrochemical Plants: To manage high-pressure chemical processes.
        • Power Plants: In steam and water systems for power generation.
        • Marine Industry: For shipbuilding and offshore platforms.
        • Pharmaceutical and Food Processing: Ensuring hygienic and secure connections

        Technical Specifications of Weld Neck Flanges
        Specification Details
        Size 1/2″ (15 NB) to 48″ (1200 NB)
        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, Class 1500, 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
        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 Flat 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, Customized Flanges

        Weld Neck Flange Dimensions & Weight
        NPS A B C D E F G H I J W
        inch inch inch inch inch inch inch No. of Holes inch inch kg/pc
        mm mm mm mm mm mm mm mm mm
        1/2 3.500 0.620 0.440 1.880 0.840 1.190 1.380 4 0.620 2.380 0.48
        88.90 15.70 11.20 47.80 21.30 30.20 35.00 15.70 60.45
        3/4 3.880 0.820 0.500 2.060 1.050 1.500 1.690 4 0.620 2.750 0.71
        98.60 20.80 12.70 52.30 26.70 38.10 42.90 15.70 69.85
        1 4.250 1.050 0.560 2.190 1.320 1.940 2.000 4 0.620 3.120 1.01
        108.0 26.70 14.20 55.60 33.50 49.30 50.80 15.70 79.25
        1-1/4 4.620 1.380 0.620 2.250 1.660 2.310 2.550 4 0.620 3.500 1.33
        117.3 35.10 15.70 57.15 42.20 58.70 63.50 15.70 88.90
        1-1/2 5.000 1.610 0.690 2.440 1.900 2.560 2.880 4 0.620 3.880 1.72
        127.0 40.90 17.50 62.00 48.30 65.00 73.15 15.70 98.60
        2 6.000 2.070 0.750 2.500 2.380 3.060 3.620 4 0.750 4.750 2.58
        152.4 52.60 19.10 63.50 60.45 77.70 91.90 19.10 120.7
        2-1/2 7.000 2.470 0.880 2.750 2.880 3.560 4.120 4 0.750 5.500 4.11
        177.8 62.70 22.40 69.85 73.15 90.40 104.6 19.10 139.7
        3 7.500 3.070 0.940 2.750 3.500 4.250 5.000 4 0.750 6.000 4.92
        190.5 78.00 23.90 69.85 88.90 108.0 127.0 19.10 152.4
        3-1/2 8.500 3.550 0.940 2.810 4.000 4.810 5.500 8 0.750 7.000 6.08
        215.9 90.20 23.90 71.40 101.6 122.2 139.7 19.10 177.8
        4 9.000 4.030 0.940 3.000 4.500 5.310 6.190 8 0.750 7.500 6.84
        228.6 102.4 23.90 76.20 114.3 134.9 157.2 19.10 190.5
        5 10.00 5.050 0.940 3.500 5.560 6.440 7.310 8 0.880 8.500 8.56
        254.0 128.3 23.90 88.90 141.2 163.6 185.7 22.40 215.9
        6 11.00 6.070 1.000 3.500 6.630 7.560 8.500 8 0.880 9.500 10.6
        279.4 154.2 25.4 88.90 168.4 192.0 215.9 22.40 241.3
        8 13.50 7.980 1.120 4.000 8.630 9.690 10.62 8 0.880 11.75 17.6
        342.9 202.7 28.40 101.6 219.2 246.1 269.7 22.40 298.5
        10 16.00 10.02 1.190 4.000 10.75 12.00 12.75 12 1.000 14.25 24.0
        406.4 254.5 30.20 101.6 273.0 304.8 323.8 25.40 362.0
        12 19.00 12.00 1.250 4.500 12.75 14.38 15.00 12 1.000 17.00 36.5
        482.6 304.8 31.75 114.3 323.8 365.3 381.0 25.40 431.8
        14 21.00 1.380 5.000 14.00 15.75 16.25 12 1.120 18.75 48.4
        533.4 35.10 127.0 355.6 400.1 412.7 28.40 476.3
        16 23.50 1.440 5.000 16.00 18.00 18.50 16 1.120 21.25 60.6
        596.9 36.60 127.0 406.4 475.2 469.9 28.40 539.8
        18 25.00 1.560 5.500 18.00 19.88 21.00 16 1.250 22.75 68.3
        635.0 39.60 139.7 457.2 505.0 533.4 31.75 577.9
        20 27.50 1.690 5.690 20.00 22.00 23.00 20 1.250 25.00 84.5
        698.5 42.90 144.5 508.0 558.8 584.2 31.75 635
        24 32.00 1.880 6.000 24.00 26.12 27.25 20 1.380 29.50 115
        812.8 47.80 152.4 609.6 663.4 692.1 35.10 749.3

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