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NS 2539 Norwegian Standard (NS) Flanges
NS 2539 Norwegian standard flange
Standard: NS 2539
Flange type: plate flange
Size range: DN15-DN500
Pressure: forged
Material: Stainless steel , Alloy Steel , Carbon Steel
Standard: NS 2539
Flange type: plate flange
Size range: DN15-DN500
Connection type: Flate Face(FF), Raised Face(RF), Ring Type Joint (RTJ).
Process: forged
Specialize: As per drawing
Material:
Stainless Steel Material:
ASTM A182 F304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L
Duplex stainless steel UNS S32304,S31803,S32205.
Super Duplex stainless steel UNS S32750/S32760/S31260/S32550/S32707
Carbon Steel Material:
ASTM A105, Q235, A350 LF2,ASTM A694 F42/F46/F52/F60/F65/F70/F80
Alloy Steel Material:
ASTM A 182, GR F1,F5, F9, F11, F22, F91
Copper&Nickel Alloy Material:
CU/NI 90/10, CU/NI 70/30
Nickel Alloy Material:
Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276
Surface treatment: Anti-rust oil, transparent/yellow/black,Anti-rust paint, Zinc,Hot dipped galvanized
Usage: Oil field, Offshore, Water system, Shipbuilding, Natural gas,Electric power, Pipe projects,etc.
Standard: NS 2539
Flange type: plate flange
Size range: DN15-DN500
Specialize: As per drawing
Material : Stainless steel , Alloy Steel , Carbon Steel
| Nominal diameter DN | Flange D | d1 | K | t | Number | Threads d2 | a | b | Mass kg |
| 15 | 95 | 15 | 65 | 33 | 2*4 | M12 | 14 | 20 | 1.7 |
| 20 | 105 | 20 | 75 | 33 | 2*4 | M12 | 14 | 20 | 2.07 |
| 25 | 115 | 25 | 85 | 33 | 2*4 | M12 | 14 | 20 | 2.47 |
| 32 | 140 | 32 | 100 | 33 | 2*4 | M16 | 19 | 25 | 3.5 |
| 40 | 150 | 43 | 110 | 33 | 2*4 | M16 | 19 | 25 | 3.93 |
| 50 | 1665 | 55 | 125 | 33 | 2*4 | M16 | 19 | 25 | 4.64 |
| 65 | 185 | 70 | 145 | 33 | 2*4 | M16 | 19 | 25 | 5.68 |
| 80 | 200 | 82 | 160 | 33 | 2*8 | M16 | 19 | 25 | 6.21 |
| 100 | 220 | 107 | 180 | 33 | 2*8 | M16 | 19 | 25 | 6.96 |
| 125 | 250 | 132 | 210 | 33 | 2*8 | M16 | 19 | 25 | 8.61 |
| 150 | 285 | 160 | 240 | 38 | 2*8 | M20 | 23 | 29 | 12 |
| 175 | 315 | 182 | 270 | 38 | 2*8 | M20 | 23 | 29 | 14.2 |
| 200 | 340 | 210 | 295 | 38 | 2*12 | M20 | 23 | 29 | 15.7 |
| 250 | 395 | 260 | 350 | 38 | 2*12 | M20 | 23 | 29 | 19.1 |
| 300 | 445 | 310 | 400 | 38 | 2*12 | M20 | 23 | 29 | 22.3 |
| 350 | 505 | 350 | 460 | 38 | 2*16 | M20 | 23 | 29 | 28.9 |
| 400 | 565 | 400 | 515 | 44 | 2*16 | M24 | 28 | 34 | 39.5 |
| 450 | 615 | 450 | 565 | 44 | 2*20 | M24 | 28 | 34 | 43 |
| 500 | 670 | 500 | 620 | 44 | 2*20 | M24 | 28 | 34 | 49.3 |
