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Weld Neck Flanges Manufacturer, Supplier & Stockists

Highly acclaimed Manufacturer & Supplier of Weld Neck Flanges, WNRF Flanges, Carbon Steel Weld Neck Flanges, SS Weld Neck Flanges, Alloy Steel Weld Neck Flanges in India & Asia

We are largest manufacturers of Weld Neck Flanges & have 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

Weld Neck Flanges / WNRF Flanges

Petromet Flange Inc. is a 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 flanges 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 bore of the pipeline, reducing turbulence and erosion. Weld Neck Flanges are available in following specifications:

Specification
  • 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
  • Packing: No Fumigate or Fumigate Plywood/Wood Pallet or Case
  • Surface Treatment: Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint,Zinc,Hot dipped Galvanized.
  • E-catalogue: Available , please visit catalogue of flange
  • Usage: Oil Field, Offshore, Water System, Shipbuilding, Natural Gas, Electric Power, Pipe Projects etc.
ASME/ANSI B16.5 150LB WN Flange/Standards, Dimensions & Weight
Pipe Normal Diam. O.D. Flange  Thk. Of Flange Min  Diam.
of
Hub 
Diameter of Raised Face  Hub
Diam.
Chamfer
of W.N 
Length Hub.Y Bore  Diam.
of Bolt
Circle
Diam.
of Bolt
Holes
Number
of Bolts
Diam. of
Bolts
(inch)
KG LB
inch dn O C X G A Y B BC BH BN BD
1/2″ 15 89.00 11.20 30.20 35.10 21.30 47.80 15.80 60.50 15.80 4 1/2″ 0.7 1.5
3/4″ 20 98.50 12.70 38.10 42.90 26.70 52.30 20.80 69.90 15.80 4 1/2″ 0.8 1.8
1″ 25 108.00 14.20 49.30 50.80 33.50 55.60 26.70 79.30 15.80 4 1/2″ 1.1 2.4
1-1/4″ 32 117.50 15.70 58.70 63.50 42.20 57.20 35.10 88.90 15.80 4 1/2″ 1.5 3.3
1-1/2″ 40 127.00 17.50 65.00 73.20 48.30 62.00 40.90 98.60 15.80 4 1/2″ 1.8 4
2″ 50 152.50 19.10 77.70 91.90 60.50 63.50 52.60 120.70 19.10 4 5/8″ 2.7 6
2-1/2″ 65 178.00 22.40 90.40 104.60 73.20 69.90 62.70 139.70 19.10 4 5/8″ 4.4 9.8
3″ 80 190.50 23.90 108.00 127.00 88.90 69.90 78.00 152.40 19.10 4 5/8″ 5.2 11.5
3-1/2″ 90 216.00 23.90 122.20 139.70 101.60 71.40 90.20 177.80 19.10 8 5/8″ 6.4 14.2
4″ 100 228.50 23.90 134.90 157.20 114.30 76.20 102.40 190.50 19.10 8 5/8″ 7.5 16.6
5″ 125 254.00 23.90 163.60 185.70 141.20 88.90 128.30 215.90 22.40 8 3/4″ 9.2 20.2
6″ 150 279.50 25.40 192.00 215.90 168.40 88.90 154.20 241.30 22.40 8 3/4″ 11 24.3
8″ 200 343.00 28.40 246.10 269.70 219.20 101.60 202.70 298.50 22.40 8 3/4″ 18.4 40.6
10″ 250 406.50 30.20 304.80 323.90 273.10 101.60 254.50 362.00 25.40 12 7/8″ 25.5 56.2
12″ 300 482.50 31.80 365.30 381.00 323.90 114.30 304.80 431.80 25.40 12 7/8″ 37 81.4
14″ 350 533.50 35.10 400.10 412.80 355.60 127.00 476.30 28.50 12 1″ 51 113
16″ 400 597.00 36.60 457.20 469.90 406.40 127.00 539.80 28.50 16 1″ 61.5 136
18″ 450 635.00 39.60 505.00 533.40 457.20 139.70 577.90 31.80 16 1 1/8″ 71.5 158
20″ 500 698.50 42.90 558.80 584.20 508.00 144.50 635.00 31.80 20 1 1/8″ 85 187
24″ 600 813.00 47.80 663.40 692.20 609.60 152.40 749.30 35.10 20 1 1/4″ 119 262

Note:
1) 2 mm raised face regularly furnished on Classes 150 and 300 unless otherwise ordered.

ASME/ANSI B16.5 300LB WN Flange/Standards, Dimensions & Weight
Pipe Normal Diam. O.D. Flange  Thk. Of Flange Min  Diam.
of
Hub 
Diameter of Raised Face  Hub
Diam.
Chamfer
of W.N 
Length Hub.Y Bore  Diam.
of Bolt
Circle
Diam.
of Bolt
Holes
Number
of Bolts
Diam. of
Bolts
(inch)
Approx. Weight
inch dn O C X G A Y B BC BH BN BD KG/PCS LB/PCS
1/2″ 15 95.5 14.2 38.1 35.1 21.3 52.3 15.7 66.5 15.7 4 1/2″ 0.8 1.8
3/4″ 20 117. 5 15.7 47.8 42.9 26.7 57.2 20.8 82.6 19.1 4 5/8″ 1.4 3.1
1″ 25 124. 0 17.5 53.8 50.8 33.5 62 26.7 88.9 19.1 4 5/8″ 1.7 3.7
1-1/4″ 32 133. 5 19.1 63.5 63.5 42.2 65 35.1 98.6 19.1 4 5/8″ 2.2 4.8
1-1/2″ 40 155. 5 20.6 69.9 73.2 48.3 68.3 40.9 114.3 22.4 4 5/8″ 3.2 7
2″ 50 165. 0 22.4 84.1 91.9 60.5 69.9 52.6 127 19.1 8 5/8″ 3.6 7.9
2-1/2″ 65 190. 5 25.4 100.1 104.6 73.2 76.2 62.7 149.4 22.4 8 3/4″ 5.4 12
3″ 80 209. 5 28.4 117.3 127 88.9 79.2 78 168.1 22.4 8 3/4″ 7.3 16.1
3-1/2″ 90 228. 5 30.2 133.4 139.7 101.6 81 90.2 184.2 22.4 8 3/4″ 8.9 19.6
4″ 100 254. 0 31.8 146.1 157.2 114.3 85.9 102.4 200.2 22.4 8 3/4″ 11.8 26
5″ 125 279. 5 35.1 177.8 185.7 141.2 98.6 128.3 235 22.4 8 3/4″ 16 35.2
6″ 150 317. 5 36.6 206.2 215.9 168.4 98.6 154.2 269.7 22.4 12 3/4″ 20.2 44.6
8″ 200 381. 0 41.1 260.4 269.7 219.2 111. 3 202.7 330.2 25.4 12 7/8″ 31.2 68.8
10″ 250 444. 5 47.8 320.5 323.9 273.1 117. 3 254.5 387.4 28.4 16 1″ 44.3 97.5
12″ 300 520. 5 50.8 374.7 381 323.9 130. 0 304.8 450.9 31.8 16 1 1/8″ 63.5 140
14″ 350 584. 0 53.8 425.5 412.8 355.6 142. 7   514..4 31.8 20 1 1/8″ 86 190
16″ 400 647. 5 57.2 482.6 469.9 406.4 146. 1   571.5 35.1 20 1 1/4″ 112 247
18″ 450 711. 0 60.5 533.4 533.4 457.2 158. 8   628.7 35.1 24 1 1/4″ 141 310
20″ 500 774. 5 63.5 587.2 584.2 508 162. 1   685.8 35.1 24 1 1/4″ 173 382
24″ 600 914. 5 69.9 701.5 692.2 609.6 168. 1   812.8 41.1 24 1 1/2″ 248 546

Note:
1) 2 mm raised face regularly furnished on Classes 150 and 300 unless otherwise ordered.

ASME/ANSI B16.5 600LB WN Flange/Standards, Dimensions & Weight
Pipe Normal Diam. O.D. Flange  Thk. Of Flange Min  Diam.
of
Hub 
Diameter of Raised Face  Hub
Diam.
Chamfer
of W.N 
Length Hub Diam.
of Bolt
Circle
Diam.
of Bolt
Holes
Number
of Bolts
Diam. of
Bolts
(inch)
Approx. Weight
inch dn O C X G A Y BC BH BN BD KG/PCS LB/PCS
1/2″ 15 95.5 14.2 38.1 35.1 22.4 52.3 66.5 15.7 4 1/2″ 0.9 2
3/4″ 20 117. 5 15.7 47.8 42.9 25.4 57.2 82.6 19.1 4 5/8″ 1.6 3.5
1″ 25 124. 0 17.5 53.8 50.8 26.9 62 88.9 19.1 4 5/8″ 1.9 4.2
1-1/4″ 32 133. 5 20.6 63.5 63.5 28.4 66.5 98.6 19.1 4 5/8″ 2.6 5.8
1-1/2″ 40 155. 5 22.4 69.9 73.2 31.8 69.9 114.3 22.4 4 3/4″ 3.6 8
2″ 50 165. 0 25.4 84.1 91.9 36.6 73.2 127 19.1 8 5/8″ 4.7 10.4
2-1/2″ 65 190. 5 28.4 100.1 104.6 41.1 79.2 149.4 22.4 8 3/4″ 4.8 15
3″ 80 209. 5 31.8 117.3 127 46 82.6 168.1 22.4 8 3/4″ 8.7 19.3
3-1/2″ 90 228. 5 35.1 133.4 139.7 49.3 85.9 184.2 25.4 8 7/8″ 11.6 25.5
4″ 100 273. 0 38.1 152.4 157.2 53.8 101. 6 215.9 25.4 8 7/8″ 18.4 40.5
5″ 125 330. 0 44.5 189 185.7 60.5 114. 3 266.7 28.4 8 1″ 31 68
6″ 150 355. 5 47.8 222.3 215.9 66.5 117. 3 292.1 28.4 12 1″ 37 81.4
8″ 200 419. 0 55.6 273.1 269.7 76.2 133. 4 349.3 31.8 12 1 1/8″ 54.5 120
10″ 250 508. 0 63.5 342.9 323.9 85.9 152. 4 431.8 35.1 16 1 1/4″ 98.5 195
12″ 300 559. 0 66.5 400.1 381 91.9 155. 4 489 35.1 20 1 1/4″ 105 231
14″ 350 603. 5 69.9 431.8 412.8 93.7 165. 1 527.1 38.1 20 1 3/8″ 150 330
16″ 400 686. 0 76.2 495.3 469.9 106.4 177. 8 603.3 41.1 20 1 1/2″ 177 390
18″ 450 743. 0 82.6 546.1 533.4 117.3 184. 2 654.1 44.5 20 1 5/8″ 228 503
20″ 500 813. 0 88.9 609.6 584.2 127 190. 5 723.9 44.5 24 1 5/8″ 285 628
24″ 600 940. 0 101.6 717.6 692.2 139.7 203. 2 838.2 50.8 24 1 7/8″ 372 820

Note:
1) 7 mm raised face regularly furnished above Class 400 unless otherwise ordered.

ASME/ANSI B16.5 1500LB WN Flange/Standards, Dimensions & Weight
Pipe Normal Diam. O.D. Flange Thk. Of Flange Min Diam.
of
Hub
Hub
Diam.
Chamfer
of W.N
Length Hub Diam.
of Bolt
Circle
Diam.
of Bolt
Holes
Number
of Bolts
Diam. of
Bolts
(inch)
Approx. Weight
inch dn O C X A Y BC BH BN BD KG/PCS LB/PCS
1/2″ 15 120.7 22.4 38.1 21.3 60.5 82.6 22.4 4 3/4″ 2.1 4.6
3/4″ 20 130 25.4 44.5 26.7 69.9 88.9 22.4 4 3/4″ 2.7 5.9
1″ 25 149.4 28.4 52.3 33.5 73.2 101.6 25.4 4 7/8″ 3.9 8.6
1-1/4″ 32 158.8 28.4 63.5 42.2 73.2 111.3 25.4 4 7/8″ 4.5 9.9
1-1/2″ 40 177.8 31.8 69.9 48.3 82.6 124 28.4 4 1″ 6.2 13.7
2″ 50 215.9 38.1 104.6 60.5 101.6 165.1 25.4 8 7/8″ 11.3 24.9
2-1/2″ 65 244.3 41.1 124 73.2 104.6 190.5 28.4 8 1″ 16.3 36
3″ 80 266.7 47.8 133.4 88.9 117.3 190.5 25.4 8 7/8″ 21 46.3
4″ 100 311.2 53.8 162.1 114.3 124 235 31.8 8 1 1/8″ 31.8 70.1
5″ 125 374.7 73.2 196.9 141.2 155.4 279.4 35.1 8 1 1/4″ 59 129.8
6″ 150 393.7 82.6 228.6 168.4 171.5 317.5 31.8 12 1 1/8″ 72 158
8″ 200 482.6 91.9 292.1 219.2 212.9 393.7 38.1 12 1 3/8″ 124 273
10″ 250 584.2 108 368.3 273.1 254 469.9 38.1 16 1 3/8″ 207 456
12″ 300 673.1 124 450.9 323.9 282.4 533.4 38.1 20 1 3/8″ 306 674
14″ 350 749.3 133.4 495.3 355.6 298.5 558.8 41.1 20 1 1/2″ 416 917
16″ 400 825.5 146.1 552.5 406.4 311.2 616 44.5 20 1 5/8″ 567 1250
18″ 450 914.4 162.1 596.9 457.2 327.2 685.8 50.8 20 1 7/8″ 736 1623
20″ 500 984.3 177.8 641.4 508 355.6 749.3 53.8 20 2″ 929 2048
24″ 600 1168.4 203.2 762 609.6 406.4 901.7 66.5 20 2 1/2″ 1504 3316

Note:
1) 7 mm raised face regularly furnished above Class 400 unless otherwise ordered.

ASME/ANSI B16.5 2500LB WN Flange/Standards, Dimensions & Weight
Nominal Pipe Size O.D. Flange  Thk. Of Flange Min  Diam.
of
Hub 
Hub
Diam.
Chamfer
of W.N 
Length Hub.Y Diam.
of Bolt
Circle
Diam.
of Bolt
Holes
Number
of Bolts
Diam. of
Bolts
(inch)
KG LB
inch dn O C X A Y BC BH BN BD
1/2″ 15 133.4 30.2 42.9 21.3 73.2 88.9 22.4 4 3/4″ 3.2 7
3/4″ 20 139.7 31.8 50.8 26.7 79.2 95.3 22.4 4 3/4″ 3.6 8
1″ 25 158.8 35.1 57.2 33.5 88.9 108 25.4 4 7/8″ 5.4 12
1-1/4″ 32 184.2 38.1 73.2 42.2 95.3 130 28.4 4 1″ 7.8 17.2
1-1/2″ 40 203.2 44.5 79.2 48.3 111.3 146.1 31.8 4 1 1/8″ 11.5 25.4
2″ 50 235 50.8 95.3 60.5 127 171.5 28.4 8 1″ 19 42
2-1/2″ 65 266.7 57.2 114.3 73.2 142.7 196.9 31.8 8 1 1/8″ 24 52
3″ 80 304.8 66.5 133.4 88.9 168.1 228.6 35.1 8 1 1/4″ 42.6 94
4″ 100 355.6 76.2 165.1 114.3 190.5 273.1 41.1 8 1 1/2″ 64 141
5″ 125 419.1 91.9 203.2 141.2 228.6 323.9 47.8 8 1 3/4″ 111 244
6″ 150 482.6 108 235 168.4 273.1 368.3 53.8 8 2″ 171 378
8″ 200 552.5 127 304.8 219.2 317.5 438.2 53.8 12 2″ 261 576
10″ 250 673.1 165.1 374.7 273.1 419.1 539.8 66.5 12 2 1/2″ 485 1068
12″ 300 762 184.2 441.5 323.9 463.6 619.3 73.2 12 2 3/4″ 698 1539

Note:
1) 7 mm raised face regularly furnished above Class 400 unless otherwise ordered.

Leading manufacturer of Weld Neck Flanges

We also having stock of Weld Neck Flanges & other Stainless Steel Flanges, Carbon Steel Flanges, Alloy Steel Flanges manufactured by :

Erne Fittings, Austria Metal far, Italy Lame S.R.l., Italy
BENKAN Corporation, Japan BKL- Thai Benkan, Thailand TecnoForge, Italy
Ulma, Spain Mega, Italy Melesi, Italy
Interfit, France Raccortubi S.P.A., Italy

we are the distributor of the of these Brands. we also have the sales representative who can provide the proper information of these Brands & about Grades, material and sizes of Weld Neck Flanges.

Our Live Stock of Weld Neck Flanges
Weld Neck Flanges Application
  • Weld Neck Flanges uses in Oil and Gas Pipeline
  • Weld Neck Flanges uses in Chemical Industry
  • Weld Neck Flanges uses in Plumbing
  • Weld Neck Flanges uses in Oil & Gas Industry
  • Weld Neck Flanges uses in Water Supply Systems
  • Weld Neck Flanges uses in Paper & Pulp Industry
  • Weld Neck Flanges uses in Power Plant
  • Weld Neck Flanges uses in Fabrication Industry
  • Weld Neck Flanges uses in General purpose applications
  • Weld Neck Flanges uses in Food Processing Industry
  • Weld Neck Flanges uses in Structural Pipe
  • Weld Neck Flanges uses in Heat Exchangers
We Have Our Sales & Support Representative in following Location
USA Costa Rica Saudi Arabia
Canada Italy Brazil
Singapore Bahrain Malaysia
Russia Venezuela Oman
Sri Lanka Poland Spain
Turkey Qatar Thailand
Angola Chile U.A.E
Egypt Indonesia Portugal