DIN 2627 Flanges

DIN 2627 Flanges

We are top notch DIN 2627 PN400 Weld Neck Flange Manufacturer in India

The DIN 2627 grade is a German standard of the Deutsches Institute fur Normung that covers standard weld neck flanges. The DIN 2627 Flanges are highly circumferentially welded grade. These flanges are connected to different piping fixtures and provide support and influence the flow of fluids and gases in the system. A DIN 2627 WNRF Flange is designed with a long tapered hub and generally connected to the fixture using a butt-weld. A WNFR flange helps in reducing turbulence as there is a movement of high pressure and temperature media through it across stress-induced environments. A DIN 2627 Long Weld Neck Flange, on the contrary, is designed with a long boring neck that sets it apart from the weld neck raised flange. The extended neck allows it to act as a boring center, allowing it to be utilized as nozzles for different columns and barrels. The versatile DIN 2627 LWNRF Flange are special flanges that are used in high-temperature systems. The flanges have a hub that helps extend the flat surface of the flange, which helps in accommodation pipes easily. They are generally seen in chemical equipment, condensers, gas processing, seawater equipment, pharmaceutical systems, petrochemicals, heat exchangers, etc.

Check Dimensions and Weight chart of DIN 2627 LWNRF Flange Online

A DIN 2627 PN400 Weld Neck Flange is a nominal pipe grade have sizes of 10 NPS to 200 NPS. These flanges are designed in different face types namely, flat face, raised face, lap joint, ring joint, male and female ends, tongue and groove faces. The versatile DIN 2627 PN400 Flange has good tolerance to corrosive and oxidative media. All these flanges can be customized in different shapes and sizes as per project requirements. The quality assured products can be delivered to our house within a short span of time.

Buy DIN 2627 WNRF Flange from the manufacturer directly saves 15% costing

DIN 2627 Flanges

DIN 2627 Flanges


DIN 2627 PN400 Weld Neck Flange

DIN 2627 PN400 Weld Neck Flange


DIN 2627 LWNRF Flange

DIN 2627 LWNRF Flange



DIN 2627 Flanges Specification

Specification DIN 2627 Flanges
Schedule Schedule 5S upto XXS
Manufacturer Length NPS 1⁄₂" uto NPS 48”
Face Type RF/ Tongue & Groove/ FF/ lap joint/ RTJ/ Male & Female
Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
Manufacturer of Threaded/ Screwed / Forged/ Plate
Manufacturer Pressure Class Class 150 (lb) to 24"
Class 600 (lb) to 20"
Class 300 (lb) to 20"
Class 1500 (lb) to 10"
Class 900 (lb) to 16"
Class 2500 (lb) to 8"
Application Bitumen upgraders
Nuclear power (mostly seamless).
Heavy oil refineries.
Petrochemicals and acids.
Forging Methods Casting/ Rolling/ Forging/ Cutting
Supporting Material Ring Joint/ Gasket/ Flange Bolts
Production Technique Heat treated/ Forged/ Machined
Flange Test UI trasonic flaw detector/ Hydrostatic testing machine/ X-ray detector/ Magnetic particle detecto/ Direct-reading Spectrographr
Flange Equipment Press machine/ Pushing Machine/ Sand-blasting machine/ Electric bevelling machine/Bending machine etc
Coating Zinc Plated/ Yellow Transparent/ Anti-rust Paint/ Oil Black Paint/ Hot and Cold Dip Galvanized

DIN 2627 Welding Neck Flanges Price

Nominal Diameter Pitch Circle Diameter In mm Thread holes Standard Pressure Price
DN 20 75 4 x 14 mm Ø DIN 2627 PN 400 560.00
DN 25 85 4 x 14 mm Ø - - 958.00
DN 32 100 4 x 18 mm Ø - - 1365.00
DN 40 110 4 x 18 mm Ø - - 1689.00
DN 50 125 4 x 18 mm Ø PN400 DIN 2627 2190.00

DIN 2627 Flanges Types

DIN 2627 Forged Flange

DIN 2627 Forged Flange

DIN 2627 Forging Flange

DIN 2627 Forging Flange

DIN 2627 Pipe Flange

DIN 2627 Pipe Flange

DIN 2627 Weld Neck Flange

DIN 2627 Weld Neck Flange

DIN 2628 PN250 Flange

DIN 2628 PN250 Flange

DIN 2629 PN320 Flange

DIN 2629 PN320 Flange

DIN 2627 Long Weld Neck Flange

DIN 2627 Long Weld Neck Flange

DIN 2627 Welding Neck Flanges

DIN 2627 Welding Neck Flanges

DIN 2627 WNRF Flange

DIN 2627 WNRF Flange


DIN 2627 PN400 Weld Neck Flange Dimensions

DIN 2627 PN400 Weld Neck Flange Dimensions

NPS Diameter of Hub Diameter at weld Bevel Radius of Hub Flange Diameter Thickness of R/F Thickness of DIN 2627 Flange Diameter of Bolt Holes Diameter of Bolt Circle Diameter of R/F Length Of Through Hub Wall Thickness Straight Portion Number of Weight
(DN) (D3) (D1) (R) (D) (F) (B) (D2) (K) (D4) (H1) (S) (H2) (holes) (Kilogram)
10 48 17.20 4 125 2 28 18 85 40 65 3.60 8 4 2.50
15 56 26.90 4 145 2 30 22 100 45 68 5.00 8 4 3.57
25 82 42.40 4 180 2 38 26 130 68 90 7.10 10 4 7.35
40 106 60.30 6 220 3 48 30 165 88 110 10.00 12 4 13.93
50 120 76.10 6 235 3 52 30 180 102 120 12.50 15 8 16.50
65 158 101.60 6 290 3 64 33 225 122 135 16.00 18 8 31.33
80 174 114.30 8 305 3 68 33 240 138 150 17.50 20 8 37.99
100 215 139.70 8 370 3 80 39 295 162 175 22.20 25 8 66.77
125 258 193.70 8 415 3 92 39 340 188 200 30.00 30 12 94.73
150 302 219.10 10 475 3 105 42 390 218 225 35.00 35 12 144.85
200 388 273.00 10 585 3 130 48 490 285 280 40.00 40 16 269.50

German Standard DIN 2627 Flanges Pressure Rating

Temperature In (°C) Class 900 Class 300 Class 150 Class 400 Class 1500 Class 600 Class 2500
-29 TO 38 124.1 41.4 15.9 55.2 206.8 82.7 344.7
50 120.1 40 15.3 53.4 200.1 80 333.5
100 104.4 34.8 13.3 46.4 173.9 69.6 289.9
150 94.2 31.4 12 41.9 157 62.8 261.6
200 87.5 29.2 11.2 38.9 145.8 58.3 243
250 82.4 27.5 10.5 36.6 137.3 54.9 228.9
300 78.2 26.1 10 34.8 130.3 52.1 217.2
325 76.4 25.5 9.3 34 127.4 51 212.3
350 75.2 25.1 8.4 33.4 125.4 50.1 208.9
375 74.3 24.8 7.4 33 123.8 49.5 206.3
400 72.9 24.3 6.5 32.4 121.5 48.6 202.5
425 71.6 23.9 5.5 31.8 119.3 47.7 198.8
450 70.2 23.4 4.6 31.2 117.1 46.8 195.1

DIN 2629 PN320 Flanges Dimensions

DIN 2629 PN320 Flanges Dimensions

NPS Diameter at weld Bevel Straight Portion DIN 2629 Flange Diameter Diameter of Bolt Holes Thickness of DIN 2629 Flange Radius of Hub Diameter of Bolt Circle Diameter of Hub Length Through Hub Wall Thickness Diameter of R/F Thickness of R/F Number of Weight
(DN) (D1) (H2) (D) (D2) (B) (R) (K) (D3) (H1) (S) (D4) (F) (holes) (Kilogram)
10 17.2 6 125 18 24 4 85 44 58 2.6 40 2 4 2.09
15 21.3 6 130 18 26 4 90 48 60 3.2 45 2 4 2.49
25 33.7 8 160 22 34 4 115 68 78 5 68 2 4 5.11
40 48.3 10 195 26 38 6 145 92 88 6.3 88 3 4 8.47
50 63.5 10 210 26 42 6 160 106 100 8 102 3 8 10.52
65 88.9 12 255 30 51 6 200 138 120 11 122 3 8 19.26
80 101.6 14 275 30 55 8 220 156 130 12.5 138 3 8 24.81
100 133 16 335 36 65 8 265 186 145 16 162 3 8 42.18
125 168.3 20 380 36 75 8 310 230 175 20 188 3 12 63.30
150 193.7 25 425 36 84 10 350 265 195 25 218 3 12 91.04
175 219.1 28 485 42 95 10 400 308 215 28 260 3 12 135.46
200 244.5 30 525 42 103 10 440 345 235 30 285 3 16 170.94
250 323.9 40 640 52 125 12 540 428 300 40 345 3 16 311.99

Sealing Face Of DIN 2627 Long Weld Neck Flange

Sealing Face Of DIN 2627 Long Weld Neck Flange

Material Of DIN 2627 Weld Neck Flange

Hastelloy ASME/ ASTM B564 / SB564, Hastelloy C22 (UNS N06022)/ C276 (UNS N10276)/ C2000/ C4/ B3/ B2/ X Flange
Stainless Steel ASTM/ASME A/SA182 F316L, F304L, F304, F316, ASTM/ASME A/SA351 CF3M/ CF3/ CF8/ CF8M/ DIN 1.4301/ 1.4306/ 1.4401/ 1.4404/ 1.4308/ 1.4408/ 1.4306/ 1.4409
Copper T2, T1, C11400/ C11300/ C68700/ C10910/C10920/ C28000/ TU2/ C44300/ C10100/ C14500/ C71000/ C27400/ C11500/ C10700/ TP1/ C10200/ C33000/ C19200/ C71640/ C44500/ C71500/ C12200/ C44400/ C33200/ C12300/ C23000/ C11600/ C37000/ C12500/ TU1/ C14510/ C60800/ C10300/ C10500/ C10400/ C10930/ C27000/ C14520/ C26000/ C70600/ C21000/ C14420/ C10800/ C12000/ C63020/ TP2/ C11000/ C14200/ C14530/ C70620/ C17200/ C71520/ C70400 etc
Alloy Steel ASME/ ASTM A182 / SA182 F9/ F5/ F11/ F22/ F12/ F91
Monel ASME/ ASTM B564 / SB564, Monel 500 (UNS No. N05500)/ Monel 400 (UNS No. N04400)
Brass 2604 / 3602 / H59 / H62 etc.
Aluminium 6063 / 5052 / 7075 / 6061/ 2017 etc.
Inconel ASME/ ASTM B564 / SB564, Inconel 601/ x750/ 600/ 625/ 783/ 718/ 690
Alloy 20 Carpenter® 20 Alloy/ ASME/ ASTM B462 / SB462/ Alloy 20Cb-3
Carbon Steel ASTM/ASME A/SA105 A/SA105N & A/SA216-WCB, Die Steel, DIN 1.0402, DIN 1.0460, DIN 1.0619, ASME/ ASTM A105 / SA105, A105N, ASME/ ASTM A350 LF2 / SA350, High Yield CS ASTM A694 / A694 (F56 F52 F60 F70 F65 F80)
Incoloy ASME/ ASTM B564 / SB564, 825 (UNS N08825)/ Incoloy 800/ 800H/ 800HT (UNS N08800)/ 925 Flange
Titanium ASME/ ASTM B381 / SB381, Titanium Gr. 1, Gr. 2/ Gr. 4/ Gr. 5/ Gr. 7
ASTM R50250/GR.1 | R56400/GR.5 | R50550/GR.3 | R50400/GR.2 | R50700/GR.4 | GR.6 | R53400/GR.12 | R52400/GR.7 | R56320/GR.9
Copper Nickel ASTM / ASME SB 61 / 151 / 62 / 152/ Cupro Nickel 70/30 (C71500)/ UNS C71640/ Copper Nickel 90/10 (C70600 )
Nickel ASME / ASTM B564 / SB564, Nickel 200/ 201/ 205/ 205LC
Super Duplex S32760 / S32750 A182 Gr F52 / F51 / F53 / F55 / F54 / F57 / F60 / F59 / F61
Duplex S32205 / S31803 A182 Gr F52 / F51 / F53 / F55 / F54 / F57 / F60 / F59 / F61
254 Smo ASME/ ASTM A182 / SA182, UNS S31254/ SMO 254/6Mo/ DIN 1.4547
Nimonic Nimonic 75/ 80A/ 90
Other material Alumunum bronze/ Tin bronze/ Lead bronze

Gasket For DIN 2627 : Welding Neck Flanges

Gasket For DIN 2627 : Welding Neck Flanges

Inner Daimeter Gasket
(Normal Size Of Pipes) In Inch Outer Daimeter Gasket
Class 300#/ LB Class 150#/ LB Class 600#/ LB Class 400#/ LB Class 900#/ LB
0.84 1/2 2.125 1.875 2.125 2.125 2.50
1.06 3/4 2.625 2.25 2.625 2.625 2.75
1.31 1 2.875 2.625 2.875 2.875 3.125
1.66 1 1/4 3.25 3 3.25 3.25 3.50
1.91 1 1/2 3.75 3.375 3.75 3.75 3.875
2.38 2 4.375 4.125 4.375 4.375 5.625
2.88 2 1/2 5.125 4.875 5.125 5.125 6.50
3.50 3 5.875 5.375 5.875 5.875 6.625
4.50 4 7.125 6.875 7.625 7.00 8.125
5.56 5 8.50 7.75 9.50 8.375 9.75
6.62 6 9.875 8.75 10.50 9.75 11.375
8.62 8 12.125 11 12.625 12.00 14.125
10.75 10 14.25 13.375 15.75 14.125 17.125
12.75 12 16.625 16.125 18.00 16.50 19.625

Face Type Of DIN 2627 PN400 Flange

Face Type Of DIN 2627 PN400 Flange


  • Type A: Flat Face (FF)
  • Type B: Raised Face (RF)
  • Type C: Tongue Face (TF)
  • Type D: Grooved Face (GF)
  • 1Type E: Spigo
  • Type F: Recess
  • Type G: Ring Recess
  • Type H: O-Ring Groove

Get best price of Smooth/ Concentric/ Spiral serrated finish DIN 2627 Long Weld Neck Flange Material manufacturer in India

DIN 2628 PN250 Flanges Dimensions

DIN 2628 PN250 Flanges Dimensions

NPS Diameter of Hub Diameter at weld Bevel Thickness of R/F DIN 2628 Flange Diameter Radius of Hub Thickness of DIN 2628 Flange Diameter of Bolt Holes Diameter of Bolt Circle Length Through Hub Diameter of R/F Wall Thickness Straight Portion Number of Weight
(DN) (D3) (D1) (F) (D) (R) (B) (D2) (K) (H1) (D4) (S) (H2) (holes) (Kilogram)
10 44 17.2 2 125 4 24 18 85 58 40 2.6 6 4 2.09
15 48 21.3 2 130 4 26 18 90 60 45 2.6 6 4 2.47
25 60 33.7 2 150 4 28 22 105 65 68 3.6 8 4 3.53
40 84 48.3 3 185 6 34 26 135 80 88 5 10 4 6.58
50 95 60.3 3 200 6 38 26 150 85 102 6.3 10 8 8.09
65 124 76.1 3 230 6 42 26 180 95 122 8 12 8 12.59
80 136 101.6 3 255 8 46 30 200 102 138 11 12 8 16.32
100 164 127 3 300 8 54 33 235 120 162 14.2 14 8 27.07
125 200 152.4 3 340 8 60 33 275 140 188 16 16 12 38.79
150 240 177.8 3 390 10 68 36 320 160 218 17.5 18 12 59.05
200 305 244.5 3 485 10 82 42 400 190 285 25 25 12 109.45
250 385 298.5 3 585 12 100 48 490 215 345 32 30 16 189.94

DIN 2627 Flanges Wall Thickness

Steel Pipe Normal Size Outer Diameter EXT Hvy 160 SCH 10 SCH 100 SCH 30 SCH 60 SCH STD Wall 80 SCH 120 SCH 20 SCH 140 SCH 40 SCH XX Hvy
½ 0.84 0.147 0.188 0.083 ... ... ... 0.109 0.147 ... ... ... 0.109 0.294
¾ 1.05 0.154 0.219 0.083 ... ... ... 0.113 0.154 ... ... ... 0.113 0.308
1 1.315 0.179 0.25 0.109 ... ... ... 0.133 0.179 ... ... ... 0.133 0.358
1 ¼ 1.66 0.191 0.25 0.109 ... ... ... 0.14 0.191 ... ... ... 0.14 0.382
1 ½ 1.9 0.2 0.281 0.109 ... ... ... 0.145 0.2 ... ... ... 0.145 0.4
2 2.375 0.218 0.344 0.109 ... ... ... 0.154 0.218 ... ... ... 0.154 0.436
2 ½ 2.875 0.276 0.375 0.12 ... ... ... 0.203 0.276 ... ... ... 0.203 0.552
3 3.5 0.3 0.438 0.12 - - - 0.216 0.3 - - - 0.216 0.6
3 ½ 4 0.318 - 0.12 - - - 0.226 0.318 - - - 0.226 0.636
4 4.5 0.337 0.531 0.12 - - - 0.237 0.337 0.438 - - 0.237 0.674
5 5.563 0.375 0.625 0.134 - - - 0.258 0.375 0.5 - - 0.258 0.75
6 6.625 0.432 0.719 0.134 - - - 0.28 0.432 0.562 - - 0.28 0.864
8 8.625 0.5 0.906 0.148 0.594 0.277 0.406 0.322 0.5 0.719 0.25 0.812 0.322 0.875
10 10.75 0.5 1.125 0.165 0.719 0.307 0.5 0.365 0.594 0.844 0.25 1 0.365 1
12 12.75 0.5 1.312 0.18 0.844 0.33 0.562 0.375 0.688 1 0.25 1.125 0.406 1
14 14 0.5 1.406 0.25 0.938 0.375 0.594 0.375 0.75 1.094 0.312 1.25 0.438 -
16 16 0.5 1.594 0.25 1.031 0.375 0.656 0.375 0.844 1.219 0.312 1.438 0.5 -
18 18 0.5 1.781 0.25 1.156 0.438 0.75 0.375 0.938 1.375 0.312 1.562 0.562 -
20 20 0.5 1.969 0.25 1.281 0.5 0.812 0.375 1.031 1.5 0.375 1.75 0.594 -
22 22 0.5 - 0.25 - - - 0.375 - - - - - -
24 24 0.5 2.344 0.25 1.531 0.562 0.969 0.375 1.219 1.812 0.375 2.062 0.688 -
26 26 0.5 - - - - - 0.375 - - - - - -
30 30 0.5 - 0.312 - 0.625 - 0.375 - - 0.5 - - -

Diameters Of Welding Neck Flange PN 400 DIN 2627

Nominal Pipe Diameter Pressure Rating
Size Of **Nominal BSP Pipe PN 10 PN 6 PN 25 PN 16 PN 40
DN 10 90 75 90 90 90 O.D.
3/8" 60 50 60 60 60 PCD (B.C.)
4 x 14 4 x 11 4 x 14 4 x 14 4 x 14 # of holes x diameter of holes
DN 15 95 80 95 95 95 O.D.
1/2" 65 55 65 65 65 PCD (B.C.)
4 x 14 4 x 11 4 x 14 4 x 14 4 x 14 # of holes x diameter of holes
DN 20 105 90 105 105 105 O.D.
3/4" 75 65 75 75 75 PCD (b.c.)
4 x 14 4 x 11 4 x 14 4 x 14 4 x 14 # of holes x diameter of holes
DN 25 115 100 115 115 115 O.D.
1" 85 75 85 85 85 PCD (b.c.)
4 x 14 4 x 11 4 x 14 4 x 14 4 x 14 # of holes x diameter of holes
DN 32 140 120 140 140 140 O.D.
1 1/4" 100 90 100 100 100 PCD (b.c.)
4 x 18 4 x 14 4 x 18 4 x 18 4 x 18 # of holes x diameter of holes
DN 40 150 130 150 150 150 O.D.
1 1/2" 110 100 110 110 110 PCD (b.c.)
4 x 18 4 x 14 4 x 18 4 x 18 4 x 18 # of holes x diameter of holes
DN 50 165 140 165 165 165 O.D.
2" 125 110 125 125 125 PCD (b.c.)
4 x 18 4 x 14 4 x 18 4 x 18 4 x 18 # of holes x diameter of holes
DN 65 185 160 185 185 185 O.D.
2 1/2" 145 130 145 145 145 PCD (b.c.)
4 x 18 4 x 14 8 x 18 4 x 18 8 x 18 # of holes x diameter of holes
DN 80 200 190 200 200 200 O.D.
3" 160 150 160 160 160 PCD (b.c.)
8 x 18 4 x 18 8 x 18 8 x 18 8 x 18 # of holes x diameter of holes
DN 100 220 210 235 220 235 O.D.
4" 180 170 190 180 190 PCD (b.c.)
8 x 18 4 x 18 8 x 22 8 x 18 8 x 22 # of holes x diameter of holes
DN 125 250 240 270 250 270 O.D.
5" 210 200 220 210 220 PCD (b.c.)
8 x 18 8 x 18 8 x 26 8 x 18 8 x 26 # of holes x diameter of holes
DN 150 285 265 300 285 300 O.D.
6" 240 225 250 240 250 PCD (b.c.)
8 x 22 8 x 18 8 x 26 8 x 22 8 x 26 # of holes x diameter of holes
DN 175 315 330 315 350 O.D.
7" 270 280 270 295 PCD (b.c.)
8 x 22 12 x 26 8 x 22 12 x 30 # of holes x diameter of holes
DN 200 340 320 360 340 375 O.D.
8" 295 280 310 295 320 PCD (b.c.)
8 x 22 8 x 18 12 x 26 12 x 22 12 x 30 # of holes x diameter of holes
DN 250 395 375 425 405 450 O.D.
10" 350 335 370 355 385 PCD (b.c.)
12 x 22 12 x 18 12 x 30 12 x 26 12 x 33 # of holes x diameter of holes
DN 300 445 440 485 460 515 O.D.
12" 400 395 430 410 450 PCD (b.c.)
12 x 22 12 x 22 16 x 30 12 x 26 16 x 33 # of holes x diameter of holes
DN 350 505 490 555 520 580 O.D.
14" 460 445 490 470 510 PCD (b.c.)
16 x 22 12 x 22 16 x 33 16 x 26 16 x 36 # of holes x diameter of holes
DN 400 565 540 620 580 660 O.D.
16" 515 495 550 525 585 PCD (b.c.)
16 x 26 16 x 22 16 x 36 16 x 30 16 x 39 # of holes x diameter of holes
DN 500 670 645 730 715 755 O.D.
20" 620 600 660 650 670 PCD (b.c.)
20 x 26 20 x 22 20 x 36 20 x 33 20 x 42 # of holes x diameter of holes
DN 600 780 755 845 840 O.D.
24" 725 705 770 770 PCD (b.c.)
20 x 27 20 x 24 20 x 36 20 x 33 # of holes x diameter of holes

DIN 2629 PN320 Flanges Applications

  • Condensers
  • Power Generation
  • Chemical Equipment
  • Specialty Chemicals
  • Gas Processing
  • Sea Water Equipment
  • Pharmaceutical Equipment
  • Off-Shore Oil Drilling Companies
  • Pulp and Paper Industry
  • Heat Exchangers
  • Petrochemicals
  • Pharmaceuticals

View Size and Chart of RJ, Female, Tongue, RTJ, Raised, Male, Flat, Groove Face DIN 2627 LWNRF Flange manufacturer in India

DIN 2627 Welding Neck Flange PN400 Tolerances

1) Tolerance Of I.D (Inside Bore Diameter):

  • for 100 (mm) < I.D ≤ 400 (mm), +1.0 (mm)(other types) while -1.5 (mm)(weld neck types).
  • for I.D ≤ 100 (mm), ±0.5 (mm)(other types) while -1.0 (mm)(weld neck types).
  • for I.D > 400 (mm), +1.5 (mm)(other types) while -2.0 (mm)(weld neck types).

2) Tolerance Of O.D (Outside Diameter):

  • for 200 millimeter < O.D ≤ 300 millimeter , ±1.5 millimeter (faced) while ±2.0 millimeter (not faced).
  • for O.D ≤ 200 millimeter , ±1.0 millimeter (faced) while ±2.0 millimeter (not faced).
  • for O.D > 400 millimeter , ±2.0 millimeter (faced) while ±5.0 millimeter (not faced).
  • for 300 millimeter < O.D ≤ 400 millimeter , ±2.0 millimeter (faced) while ±3.0 millimeter (not faced).

3) Tolerance Of Flange (T) (Thickness):

  • for 10 millimeter < t ≤ 20 millimeter , ±0.8 millimeter (both sides) while ±1.3 millimeter (one side).
  • for t ≤ 10 millimeter , ±0.5 millimeter (both sides) while ±1.0 millimeter (one side).
  • for 30 millimeter < t ≤ 50 millimeter , ±1.0 millimeter (both sides) while ±1.5 millimeter (one side).
  • for 20 millimeter < t ≤ 30 millimeter , ±1.0 millimeter (both sides) while ±1.5 millimeter (one side).
  • for W.T > 50 millimeter , ±1.5 millimeter (both sides) while ±2.0 millimeter (one side).

4) Tolerance Of Diameter Of G (Raised Face):

  • for 80 (mm) < g ≤ 300 (mm), -2.0 (mm).
  • for g ≤ 80 (mm), -1.0 (mm).
  • for g > 300 (mm), -3.0 (mm).

5) Tolerance Of Flange Overall H (Height):

  • for 80 (mm)< H ≤ 250 (mm), ±2.0 (mm).
  • for H ≤ 80 (mm), ±0.5 (mm).
  • for H > 250 (mm), ±3.0 (mm).


DIN 2627 Weld Neck Flange Weight Chart

Normal Size Of Pipe Dimensions (Millimeter) DIN 2627 Weld Neck Flange Weight (Kilogram)
Size (Millimeter) Normal Size Of Pipe (Inches) WNRF Flange
Wall Thickness Of
(D)
In M)
WNRF Flange
Outer Daimeter (O.D.) In
(MM)
(DIN 2627 DIN 2627 Welding Neck Flange)
15 1/2 11.2 88.9 0.5
20 3/4 0.6 98.6 0.7
25 1 14.2 108 1
32 1 1/4 15.7 117.3 1.3
40 1 1/2 17.5 127 1.7
50 2 19.1 152.4 2.6
65 2 1/2 22.4 177.8 4.1
80 3 23.9 190.5 4.9
90 3 1/2 23.9 215.9 6.1
100 4 23.9 228.6 6.8
125 5 23.9 254 8.6
150 6 25.4 279.4 10.6
200 8 28.4 342.9 17.6
250 10 30.2 406.4 24
300 12 31.8 482.6 36.5
350 14 35.1 533.4 48.4
400 16 36.6 596.9 60.6
450 18 39.6 635 68.3
500 20 42.9 698.5 84.5

DIN 2628 PN250 Weld Neck Flanges Bolt Dimensions

DIN 2628 PN250 Weld Neck Flanges Bolt Dimensions

Size (Inches) Size (Millimeter) Bolts Number UNC Bolt Size RF Stud Length ISO Stud Size Machine Bolts Length
Class 150 Flange
1/2 15 4 1/2 55 M14 50
3/4 20 4 1/2 65 M14 50
1 25 4 1/2 65 M14 55
1 1/4 32 4 1/2 70 M14 55
1 1/2 40 4 1/2 70 M14 65
2 50 4 5/8 85 M16 70
2 1/2 65 4 5/8 90 M16 75
3 80 4 5/8 90 M16 75
3 1/2 90 8 5/8 90 M16 75
4 100 8 5/8 90 M16 75
5 125 8 3/4 95 M20 85
6 150 8 3/4 100 M20 85
8 200 8 3/4 110 M20 90
10 250 12 7/8 115 M24 100
12 300 12 7/8 120 M24 100
14 350 12 1 135 M27 115
16 400 16 1 135 M27 115
18 450 16 1 1/8 145 M30 125
20 500 20 1 1/8 160 M30 140
24 600 20 1 1/4 170 M33 150

Size (Inches) Size (Millimeter) Bolts Number UNC Bolt Size RF Stud Length ISO Stud Size Machine Bolts Length
Class 300 Flange
1/2 15 4 1/2 65 M14 55
3/4 20 4 5/8 75 M16 65
1 25 4 5/8 75 M16 65
1 1/4 32 4 5/8 85 M16 70
1 1/2 40 4 3/4 90 M20 75
2 50 8 5/8 90 M16 75
2 1/2 65 8 3/4 100 M20 85
3 80 8 3/4 110 M20 90
3 1/2 90 8 3/4 110 M20 95
4 100 8 3/4 115 M20 95
5 125 8 3/4 120 M20 110
6 150 12 3/4 120 M20 110
8 200 12 7/8 140 M24 120
10 250 16 1 160 M27 140
12 300 16 1 1/8 170 M30 145
14 350 20 1 1/8 180 M30 160
16 400 20 1 1/4 190 M33 165
18 450 24 1 1/4 195 M33 170
20 500 24 1 1/4 205 M33 185
24 600 24 1 1/2 230 M39 205

DIN 2627 LWNRF Flange Sizes Chart

Normal Pipe Size DN
1 1/4 32
1/2 15
2 50
3/4 20
2 1/2 65
1 25
1 1/2 40
3 80
4 100

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Arab Paper Manufacturing Company (WARAQ)- Damman

Arab Paper Manufacturing Company (WARAQ)- Damman

Neste Refinery Expansion - Singapore

Neste Refinery Expansion - Singapore

Atlantic Gulf & Pacific Company (Ag&P)- Philippines

Atlantic Gulf & Pacific Company (Ag&P)- Philippines