Weld Neck Flanges / WNRF Flanges

Guru Gautam Steels is Manufacturer, Supplier and Exporter of high Quality Weld Neck Flanges. Weld Neck Flanges are usually used in high pressure systems and are suitable for cold or hot temperatures. Also, we can produce as per your drawings and specifications.
weld neck flanges

ANSI B16.5 Weld Neck Flanges, ASME B16.47 Weld Neck Flanges, DIN Weld Neck Flanges Manufacturer & Supplier in india.

WELD NECK FLANGES SPECIFICATION :

Standard - ANSI/ASME : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48

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

Size : 1/2" (15 NB) to 48" (1200NB)

Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.

Specialize :As per drawing



WELD NECK FLANGES MATERIAL & GRADES :

Stainless Steel Weld Neck Flanges : ASTM A182, A240 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

Super Duplex Weld Neck Flanges : ASTM / ASME A/SA 182, A240 F 44, F 45, F51, F 53, F 55, F 60, F 61

Nickel Alloy Weld Neck Flanges : 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), Titanium (Grade I & II)

Copper Alloy Weld Neck Flanges : UNS No. C10100, 10200, 10300, 10800, 12000, 12200, 70600, 71500, UNS No. C 70600 (Cu -Ni- 90/10), C 71500 (Cu-Ni-70/30)

Low Temperature Carbon Steel Weld Neck Flanges : ASTM A350, LF2, LF3


WELD NECK / WNRF FLANGES DIMENSIONS :

ANSI, ASME, ASA, B16.5 WELDING NECK FLANGE RF

weld neck flanges dimensions

ANSI, ASME, ASA, B16.5 150lb/sq.in. WELDING NECK FLANGE 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


NOTE :
1. Class 150 flanges except Lap Joint will be furnished with 0.06 (1.6mm) raised face, which is included in ‘Thickness’ (C) and ‘Length through Hub’ (Y1), (Y3).
2. For Slip-on, Threaded, Socket Welding and Lap Joint Flanges, the hubs can be shaped either vertical from base to top or tapered within the limits of 7 degrees.
3. Blind Flanges may be made with the same hub as that used for Slip-on Flanges or without hub.
4. The gasket surface and backside (bearing surface for bolting) are made parallel within 1 degree. To accomplish parallelism, spot facing is carried out according to MSS SP-9, without reducing thickness (C).
5. Depth of Socket (D) is covered by ANSI B 16.5 only in sizes through 3 inch, over 3 inch is at the manufacturer’s option.
6. Welding Neck Flange Bore Size SCH10, SCH20, SCH30, STD, SCH40, SCH60, SCH80, SCH100, SCH 120, SCH140, SCH160, XS

Marking & Packing
Our products like flanges are packaged to make sure that there’s no damage throughout transit. Just in case of exports, customary export packaging is completed in wooden boxes or cases. All flanges are marked with Trademark (Company’s LOGO), Grade, Size and Lot No. On requests we can do custom marking on our products.

Test Certificates
Manufacturer Test Certificate as per EN 10204-3.1, EN 10204-3.2, Raw Materials Certificate, NABL approved Lab Test Report, 100% Radiography Test Report, Third Party Inspection Report etc.