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  • + (91) 98201 73071
  • + (91) 79778 57169
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  • Shop No. 186, Ground Floor, 182/184
    Patthe Bapurao Marg, Near Alfred
    Theater, Mumbai - 400004

Threaded Flange

Threaded Flange

Threaded Flange

At AK Steel (India), we manufacture and supply high-quality Threaded Flanges, which are ideal for low-pressure applications where welding is not feasible. Threaded Flanges are designed to be screwed onto pipes with matching threads, providing a secure and leak-proof connection. They are widely used in Water Supply, Chemical, Petrochemical, and Oil & Gas Industries.

Made from premium Stainless Steel, Carbon Steel, Alloy Steel, and Duplex materials, our Threaded Flanges meet international standards such as ASME B16.5, ASTM, and DIN. Every flange undergoes strict quality inspection including dimensional verification, thread accuracy, and surface finish testing. ISO 9001:2015 certification ensures our customers receive reliable and durable products.

  • Materials: SS 304/304L/316/316L, Carbon Steel, Alloy Steel, Duplex.
  • Standards: ASME B16.5, ASTM A182/A105, DIN 2543.
  • Face Types: Raised Face (RF), Flat Face (FF).
  • Manufacturing: Forged, Machined, Threaded.
  • Quality: EN 10204 3.1 Certified, 100% Thread Checked, PMI Verified.
  • Size Range: ½" to 24" (DN15 to DN600).

Specification Table of Threaded Flange

Product Name
Threaded Flange (Standard, Long Face)
Stainless Steel
Grades: 304, 304L, 316, 316L, 310S, 321, 347
Standard ASTM A182 F304/304L, F316/316L
Alloy Steel
Grades: ASTM A182 F5, F9, F11, F22
Use: Low-to-Moderate Temperature & Pressure Applications
Carbon Steel
Standard: ASTM A105, A350 LF2
Use: General Industrial & Pipeline Applications
Duplex & Exotic
Duplex 2205, Super Duplex 2507, Inconel 625/718, Monel 400, Hastelloy C276
Size Range
½" to 24" (DN15 – DN600)  |  Class 150 to Class 600
Standards
ASME B16.5, ASTM A182/A105, DIN 2543, EN 1092-1, JIS
Types
Threaded, Raised Face (RF), Flat Face (FF)
Finish
Smooth, Polished (SS), Black Finish (CS/Alloy)

Flange Weights by Pressure Class and Size in mm kg

Pipe Size (inch) 150 # 300 # 600 # 900 # 1500 # 2500 #
WN SO BLD WN SO BLD WN SO BLD WN SO BLD WN SO BLD WN SO BLD
1/2″ 2 1 1 2 1 1 2 2 2 SEE 1500 # WEIGHTS 5 4 4 7 7 7
3/4″ 2 2 2 3 3 3 4 3 3 SEE 1500 # WEIGHTS 6 5 6 8 8 8
1″ 3 2 2 4 3 3 4 4 4 SEE 1500 # WEIGHTS 9 8 8 12 11 11
1 1/2″ 4 3 3 7 6 6 8 7 8 SEE 1500 # WEIGHTS 13 12 13 25 22 23
2″ 6 5 5 9 7 8 12 9 10 SEE 1500 # WEIGHTS 25 25 25 42 37 39
2 1/2″ 8 7 7 12 10 12 18 13 15 SEE 1500 # WEIGHTS 36 36 35 52 55 56
3″ 10 8 9 15 13 16 23 16 20 31 26 29 48 48 48 94 83 86
4″ 15 13 17 25 22 27 42 37 41 53 53 54 73 73 73 145 125 130
5″ 19 15 20 32 28 35 68 63 68 86 83 87 130 130 140 245 210 225
6″ 24 19 26 42 39 50 81 80 86 110 110 115 165 165 160 380 325 345
8″ 39 30 45 67 58 81 120 115 140 175 170 200 275 260 300 580 485 530
10″ 52 43 70 91 81 124 190 170 230 260 245 290 455 435 510 1075 930 1025
12″ 80 64 110 140 115 185 225 200 295 325 325 415 690 580 690 1525 1100 1300
14″ 110 90 140 180 165 250 280 230 355 400 400 520 940 NA 975 NA NA NA
16″ 140 98 180 250 190 295 390 330 495 495 425 600 1250 NA 1300 NA NA NA
18″ 150 130 220 320 250 395 475 400 630 680 600 850 1625 NA 1750 NA NA NA
20″ 180 165 285 400 315 505 590 510 810 830 730 1075 2050 NA 2225 NA NA NA
22″ 225 185 355 465 370 640 720 590 1000 NA NA NA NA NA NA NA NA NA
24″ 260 220 430 580 475 790 830 730 1250 1500 1400 2025 3325 NA 3625 NA NA NA