Quality forge and Fitting is a leading manufacturer,
Supplier and Exporter of Flanges and Fitting

Weld Neck Flanges

Manufacturer, supplier, and exporter in India

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Author: Quality Forge & Fitting | Updated on: 1 June 2021

Are you looking for the finest quality Weld Neck Flanges manufacturer and suppliers?

Get Quality products at Low price and Quick Dispatch and Delivery Available from Quality Forge & Fitting warehouse. Topmost Quality Carbon Steel Flanges, Carbon Steel Flanges, Mild Steel Flanges and Flanges manufacturers in India.

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Quality Forge & Fitting is a highly acclaimed manufacturer, supplier, and exporter of all types of stainless steel flanges, carbon steel flanges, Monel Flanges Nickel Flanges, Inconel Flanges, Hastelloy Flanges, Copper Flanges, Brass Flanges, Bronze Flanges, Titanium Flanges, Tantalum Flanges, Bismuth Flanges, Aluminium Flanges, High Speed Steel Flanges, Zinc Flanges, and Lead Flanges. Quality Forge & Fitting is one of the leading manufacturer, supplier, and exporter of types of flanges like Welding Neck Flanges (WNRF), Blind Flanges (BLRF), Slip On Flanges (SORF), Socket Weld Flanges (SWRF), Lap Joint Flanges, Screwed/ Threaded Flanges, Spectacle Blind Flanges, Spades and Ring Spacers, Square Flanges, Orifice Flanges, Ring Type Joint Flanges (RTJ), Plate Flanges, Reducing Flanges, ANSI/ ASME B16.5 Flanges, BS 10 Flanges, DIN Flanges, EN 1092-1 Flanges, and JIS Flanges.

Table of Contents

Description of Weld Neck Flanges

Weld neck pipe flanges are typically provided with a flat face, raised face, or RTJ facing and derives its name from the neck portion of the flange that is welded to the end of a piping system. For flanges of 400# and up, the standard weld neck pipe flange raised face height is 1/4″. When a raised face is necessary for weld neck pipe flanges, the standard height is 1/16″ for weld neck pipe flanges under 400#. The Welding Neck Flanges (WNRF) are mainly used for high-pressure applications. Weld Neck Flanges are ideal for extreme fluctuations of temperature and in environments where there may be a lot of bending and handling of the flanges.

An ANSI class is a designation kept by a set of specifications or standards meant to convey both the pressure as well as temperature ratings of pipe flanges. Weld neck flanges are available in all of our stainless steel and chrome-moly grades, from ½” to 36” and beyond, class 150 to 2500. We also stock large diameter Series A B16.47 Weld neck flanges in A105N, and can supply Series B Weld necks with longer lead times. We can also source many of your other specification requirements. In its denotation, the word Class is mentioned after a dimensionless number. This includes Class 150, 300, 400, Weld Neck Flange Class 600, 900, 1500, and 2500. Govt. of India recognised Export House & Stainless Steel Weld Neck Flange manufacturer in Mumbai, Maharashtra

ASTM A182 F12 Weld Neck Flange distributors in India, ASTM A182 F11 Weld Neck Flange suppliers, ASTM A182 F22 Weld Neck Flange, ASTM A182 F91 Weld Neck Flange, 304L /316L Stainless Steel Weld Neck Flange, ASTM A350 LF2 Weld Neck Flange, WNRF Flange Manufacturers in India, ASTM A350 LF3 Weld Neck Flange, carbon steel Weld Neck Flange, alloy steel Weld Neck Flange, ASTM A350 LF6 Weld Neck Flange manufacturers in India, ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, Alloy Steel, Carbon Steel Plate/ Forged Weld Neck Flange, Steel RST37.2, C22.8 traders in India.

Need more detailed product information before ordering?  If you’re ready to order or would like to talk with one of our materials experts, for more specific questions regarding our products, please Contact Us at +91 9833 359 757 or send an inquiry through the Enquiry Form.

Specifications Of Weld Neck Flanges

Dimensions
ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
Size
1/2″ (15 NB) to 48″ (1200 NB)
Class
150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
DIN
DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636,DIN2637, DIN2638, DIN2673
BS
BS4504 , BS4504, BS1560, BS10
Flange Face Type
Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Material & Grades of Weld Neck Flanges

Stainless Steel Weld Neck Flange
ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L
Duplex & Super Duplex Steel Weld Neck Flange
ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61
Carbon Steel Weld Neck Flange
ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F706
Low Temperature Carbon Steel Weld Neck Flange
ASTM A350, LF2, LF3
Alloy Steel Weld Neck Flange
ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
Copper Alloy Steel Weld Neck Flange
ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200
Nickel Alloy Weld Neck Flange
ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020)

Weld Neck Flanges Price List

Weld Neck Flanges Types Weld Neck Flange Price in India Weld Neck Flange Price in USD
Stainless Steel Weld Neck Flanges INR 300 to 450 * / Kg USD $ 10.45* /Kg
Carbon steel Weld neck flanges INR 100 to 125 */ Kg USD $ 65.89 */Kg
Alloy steel Weld neck flanges INR 300 to 350 */ Kg USD $ 55.36* /Kg
ASME b16.47 Weld neck flanges INR 90 to 100 */ Kg USD $ 75.56* /Kg
ANSI b16 5 Weld neck flanges INR 90 to 120*/ Kg USD $ 65.56* /Kg

*Prices shown above are provisional prices and may change due to different market conditions. The market prices for materials have become very volatile in recent months. As a result, we cannot provide exact online pricing for these items, for latest prices please Contact Us at Contact Us at +91 9833 359 757 or send an enquiry through the Enquiry Form to get the final price within hours. 

Quality Forge & Fitting one of the most competitive suppliers of Flanges pipe fittings products from India and our prices for are very competitive. Please request the updated price list and ready stock information along with your requirement. Quality Forge & Fitting maintains a stock of all standard items and can export them at the best price.

ANSI B16.5 WNRF Flange Weight

Weld Neck Flange Weight Chart, Weld Neck Flange Weight in KG

ANSI B16.5 WELD NECK FLANGES WEIGHT (KGS)
Nom
Pipe
Size
150# 300# 600# 900# 1500# 2500#
WN S/O B/K WN S/O B/K WN S/O B/K WN S/O B/K WN S/O B/K WN S/O B/K
1/2” 0.7 0.4 0.5 0.8 0.7 0.8 0.9 0.8 0.8 2.1 1.8 1.9 2.1 1.8 1.9 3.2 3 3
3/4” 0.8 0.7 0.8 1.4 1.2 1.2 1.6 1.4 1.4 2.7 2.4 2.7 2.7 2.4 2.7 3.6 4 4.5
1” 1.1 0.8 0.9 1.7 1.4 1.5 1.9 1.7 1.7 3.9 3.6 3.7 3.9 3.6 3.7 5.4 5 5
1.1/4” 1.5 1.2 1.3 2.2 1.8 2 2.6 2.1 2.4 4.5 4.1 4.3 4.5 4.1 4.3 7.8 8 8
1.1/2” 1.8 1.4 1.6 3.2 2.7 2.9 3.6 3.1 3.4 6.2 5.4 5.9 6.2 5.4 5.9 11.5 11 11
2” 2.7 2.2 2.6 3.6 3.2 3.5 4.7 3.9 4.4 11.3 10.5 11.3 11.3 10.5 11.3 19 17 17
2.1/2” 4.4 3.5 4.1 5.4 4.5 5.3 4.8 5.4 6.8 16.3 15.8 16 16.3 15.8 16 24 25 25
3” 5.2 3.8 5.1 7.3 5.9 7.2 8.7 7.3 8.9 15 12.3 16.8 21 21.5 19.5 42.6 38 39
3-1/2” 6.4 5 6.5 8.9 7.5 9.2 11.6 9 12.7
4” 7.5 5.6 7.5 11.8 10 12.2 18.4 16.5 18.6 24 23.2 24.5 31.8 31 33 64 58 60
5” 9.2 6.5 9.2 16 12.5 16 31 28.5 30.8 38.5 37.5 39.5 59 58.8 60 111 95 101
6” 11.0 8.1 11.8 20.2 16.5 22 37 36.2 38 50 48.3 51.5 72 74 75 171 146 156
8” 18.4 13 20.4 31.2 25.5 36 54.5 51.5 62.2 85 75 89 124 112 125 261 220 242
10” 25.5 18.4 31 44.3 35 55 98.5 76.2 102 123 110 131 207 184 215 485 420 465
12” 37 28.5 47 63.5 52 82.5 105 89.5 132 168 146 187 306 264 316 698 590 665
14” 51 37.5 60 86 73 108 150 102 158 198 172 224 416
16” 61.5 44.5 61 112 88 139 177 150 225 225 192 259 567
18” 71.5 54 93 141 115 178 228 180 285 318 272 383 736
20” 85 72 127 173 139 228 285 231 365 376 330 482 929
24” 119 95 190 248 212 350 372 330 532 680 632 905 1504

Weld Neck Flange Tolerances

Dimensional Tolerances of Weld-Neck Flanges ASME B16.5/ ANSI B16.5 Weld Neck Flange Tolerances

Diameter of Contact Face
1.6 mm Raised Face = ± 0.8 mm
6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm
Outside Diameter of Hub
≤ 12 = + 2.4 mm / – 1.6 mm | ≥ 14 = ± 3.2 mm
Outside Diameter
≤ 24 = 1.6 mm | > 24 = ± 3.2 mm
Inside Diameter
not applicable
Diameter of Counterbore
not applicable
Drilling
Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mm
Eccentricity of Bolt Circle with Respect to Facing
≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max.
Thickness
≤ 18 = + 3.2 mm / – 0 | ≥ 20 = + 4.8 mm / – 0
Length thru Hub
≤ 18 = + 3.2 mm / – 0.8 mm | ≥ 20 = + 4.8 mm / – 1.6 mm

Weld Neck Flanges Size Chart

Weld Neck Flanges Dimensions/ Weld Neck Flange Size Chart

ANSI B16.5 Long Weld Neck Flange Dimensions, PN16 Weld Neck Flange Dimensions, 4 Weld Neck flange Dimensions
wnf4

ANSI/ASME/ASA B16.5 150lb/sq.in. Flange WN-RF

ø D b g m a J* h k Holes l Kg.
1/2″ 88,9 11,1 34,9 30,2 21,3 15,7 47,6 60,3 4 15,9 0,500
3/4″ 98,4 12,7 42,9 38,1 26,7 20,8 52,4 69,8 4 15,9 0,700
1″ 107,9 14,3 50,8 49,2 33,5 26,7 55,6 79,4 4 15,9 1,100
1 1/4″ 117,5 15,9 63,5 58,8 42,2 35,1 57,1 88,9 4 15,9 1,500
1 1/2″ 127,0 17,5 73,0 65,1 48,3 40,9 61,9 98,4 4 15,9 1,800
2″ 152,4 19,0 92,1 77,8 60,3 52,6 63,5 120,6 4 19,0 2,700
2 1/2″ 177,8 22,2 104,8 90,5 73,1 62,7 69,8 139,7 4 19,0 4,400
3″ 190,5 23,8 127,0 107,9 88,9 78,0 69,8 152,4 4 19,0 5,200
3 1/2″ 215,9 23,8 139,7 122,2 101,6 90,2 71,4 177,8 8 19,0 6,400
4″ 228,6 23,8 157,2 134,9 114,3 102,4 76,2 190,5 8 19,0 7,500
5″ 254,0 23,8 185,7 163,5 141,2 128,3 88,9 215,9 8 22,2 9,200
6″ 279,4 25,4 215,9 192,1 168,4 154,2 88,9 241,3 8 22,2 11,000
8″ 342,9 28,6 269,9 246,1 219,1 202,7 101,6 298,4 8 22,2 18,300
10″ 406,4 30,2 323,8 304,8 273,0 254,5 101,6 361,9 12 25,4 25,000
12″ 482,6 31,7 381,0 365,1 323,8 304,8 114,3 431,8 12 25,4 39,000
14″ 533,4 34,9 412,7 400,0 355,6 336,5 127,0 476,2 12 28,6 51,000
16″ 596,9 36,5 469,9 457,2 406,4 387,3 127,0 539,7 16 28,6 60,000
18″ 635,0 39,7 533,4 504,8 457,2 438,1 139,7 577,8 16 31,7 71,000
20″ 698,5 42,9 584,2 558,8 508,0 488,9 144,5 635,0 20 31,7 88,000
22″ 749,3 46,0 641,2 609,6 558,8 539,7 149,2 692,1 20 34,9 102,000
24″ 812,8 47,6 692,1 663,6 609,6 590,5 152,4 749,3 20 34,9 119,000
*

The data “J” corresponds to the STD schedule

Weld Neck Flanges Applications

Quality Forge & Fitting are engaged in manufacturing of robust quality ofWeld Neck Flanges widely used in the following industries:

 

● Pharmaceutical Equipment● Food Industries
● Chemical Equipment● Manufacturing Industries
● Sea Water Equipment● Nuclear Power Plant
● Heat Exchangers● Oil & Gas Industries
● Condensers● Agriculture Industries
● Pulp and Paper Industry● Construction Industries / Building Systems
● Mining Industries● Ship Building Industries
● Water Industries● Energy Industries
● Cement Industries● Sugar Industries
● Transport Industries- Rail and Road● Off-Shore Oil Drilling Companies
● Automotive Industries● Power Generation
● Petro-Chemical Industries● Gas Processing
 ● Specialty Chemicals

Why Quality Forge & Fitting?

Quality Forge & Fitting is a leading stockist, distributor, and supplier of Flanges from India. We understand and understand the steel industry deeply and supplying to all major industries across the world. We supply flanges and Forged Fitting products and have experience in the field for more than 14 years. We have an in-house, fully modernized manufacturing unit producing customizable products that are 100 % durable and fully certified. We use the latest machinery and the latest technology to fabricate these Forged pipe fittings products. Our products are preferred by our clients due to their unique features including durability, reliability, easy operation, reasonable price, dimensional accuracy, high-end finishing, etc. We regularly supply these pipe fittings to many leading industrial units comprising petrochemicals plants, chemical, fertilizers, refineries, paper mills, cement plants, sugar mills, fabrication units etc. Our team of dedicated experts with stringent quality policy who carry quality check at every stage of production ensures that we supply best-in-class products meeting and exceeding our client’s expectations. Quality Forge & Fitting specialities that makes us a profitable business partner for our clients are:
  • Modern Infrastructure with huge storage capacity.
  • Stringent quality control policies and highly experienced team.
  • Distributors of all reputed origins and manufacturers.
  • Vast inventory of products with standard sizes and grades.
  • Strong logistics & delivery channels.
  • Superior quality products with timely deliveries
  • Confirmed execution of small as well as large consignment orders
Quality Forge & Fitting is committed to providing complete customer satisfaction when it comes to the performance, quality, timely delivery and the prices of our products. Customization facility is also provided as per the clients’ requirements as we keep upgrading our products according to the latest market trends. We fulfil each and every customer requirement irrespective of the size of the order. Our clients have been doing business with us for years, indicating higher levels of customer satisfaction. We always welcome any types of enquiries, queries and suggestions from our clients to improve our products and services to serve them better.
Shipping Policy : Our sales team will notify your delivery schedules when quoting you. Delivery time and delivery dates are based on the quantities and what types of products are ordered. Please check with our sales department when placing any orders as on exceptional occasions the delivery schedule may change. Orders may take up to 5-10 business days in transit. If products are out of stock, orders may take up to 2-4 weeks to ship. Quality Forge & Fitting will inform the buyer if this situation occurs.
Marking and Packing : All products are marked with lot no, size, grade, degree and our trademark. Products are packed to confirm that there is no damage during transit. We assure timely delivery of the product but subject to the availability of the stock. Additionally, to ensure safer shipping products are packaged in Wooden crates/pallets/boxes, Shrink-wrapped and Carton boxes. In case of export orders, standard export packaging is done in wooden cases and on special requests from clients, we can make custom marking on products.
Documentations : Documentation is offered on buyer’s request for assurance of quality of product supplying only-
  • Commercial invoice
  • Fumigation certification
  • Heat treatment chart
  • Quality assurance plan
  • Packaging list
  • Raw material test report
  • Material traceability report
Test Certificates: Manufacturer Test Certificate as per EN 10204 / 3.1B, 100% Radiography Test Report, Raw Materials Certificate, Third Party Inspection Report.

Weld Neck Flanges manufacturers, suppliers, and export destinations

Quality Forge & Fitting already supplying to these countries:
ASIAMIDDLE EASTNORTH AMERICASOUTH AMERICAEUROPEAFRICA
 Bangladesh Azerbaijan USA Argentina Albania Algeria
 Cambodia Bahrain Bahamas Bolivia Austria Angola
 India Cyprus Canada Brazil Belgium Egypt
 Indonesia Iran Costa Rica Chile Croatia Equatorial Guinea
 Japan Iraq Denmark Colombia Czech Republic Ethiopia
 Kazakhstan Israel Jamaica Ecuador Finland Gabon
 Malaysia Jordan Mexico Guyana France Ghana
 Maldives Kuwait Morocco Paraguay Germany Kenya
 Myanmar Oman Panama Peru Greece Libya
 Philippines Qatar Puerto Rico Uruguay Hungary Madagascar
 Singapore Saudi Arabia Trinidad And Tobago Venezuela Ireland Mozambique
 South Korea Syria   Italy Namibia
 Sri Lanka Turkey   Malta Nigeria
 Taiwan UAE   Netherland South Africa
 Thailand Yemen   Norway Sudan
 Vietnam    Portugal The Republic of Congo
     Russia Uganda
     Slovakia 
     Slovenia 
     Spain 
     Switzerland 
     Ukraine 
     United Kingdom 
Quality forge & fitting already supplying to these Indian cities:
 Chennai  Kerala  Hyderabad
 Pune  Mumbai  Surat
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