Class 300 flange supplier in UAE
Refer ASME B16.5 300 LB forged flanges dimensions in MM
How do you ensure the quality of a Class 300 flange during manufacturing and testing?
The pressure rating of flanges denotes the maximum pressure they withstand as temperatures increase. Our company is a 300 LB flange supplier in UAE catering to various industries, like water piping and petrochemicals.
We prioritise step-wise production quality testing through radiography and spectrography for an ASME 300 long weld neck flange.
How do I ensure the 300 LB flange I purchase meets relevant standards?
Buyers can verify the quality of a Class 300 socket weld flange through a Mill Test Report (MTR) and documents detailing the origin and raw materials. The MTR/MTC lists the product standards, for instance, ANSI/ASME B16.5 Class 300 forged flanges. It also includes dimensions, quantity, and material traceability (heat number).
Buyers can also issue a third-party inspection for a 300# flange.
Searching for a reliable class 300 forged flanges manufacturer in Dubai, find all sizes and schedule
What factors affect the price of a Class 300 blind flange?
The price of Class 300 blind flange depends on the thickness, diameter, and material. Flanges with higher pressure ratings are more robust and thicker. The design also matters – a Class 300 weld neck flange is sturdier than slip-ons.
Global trends around raw materials, additional finishing/machining, and expedited delivery raise the costs of an ANSI 300 flange.
Stockist of ANSI 300 flange with stamping in the Middle East, view 300# flange price list in KG
Table of content
Specialized in manufacturing
Class 300 Flange
ASME B16.5 Class 300 Forged Flanges can handle more pressure than a Class 150 flange, because a Class 300 flanges are constructed with more metal and can withstand more pressure.
Size
1/2 Inches to 24 Inches
Class
300
ASTM
A182, A105, A350
ASME
B16.5
Class 300 Flange Specification
| Specifications | Class 300 Flange |
|---|---|
| Methods Of Forging | Casting Forging Rolling Cutting |
| Equipment | Pushing Machine Press machine electric bevelling machine |
| Available Packing | Packing In Plywood Box And Plywood Pallet |
| Testing | Hydrostatic testing machine Magnetic particle detector Direct-reading Spectrograph UI trasonic flaw detector |
| Size | NPS 1⁄₂" To NPS 48” |
| Schedule | SCH 5S To XXS |
| Supporting Material For Flanges | Gasket/ Ring Joint/ Flanges Bolts |
| Description | Price In US ($) |
|---|---|
| GR A105, RF, STL XS BORE, FLANGES TYPE SOCKE TWELD RATING-ASME CLASS 300 | US $119.40 Per KG |
| GR :SA350 LF2 FLG SW 300# RF SOCKETWELD RATING-300# | US $11.76 Per KG |
| GR : A105 FLANGES WN, 300#, RF, STD BORE -ASME CLASS 300 | US $127.63 Per KG |
| RF, 3/4 Inch Sch 80/XS A105N, Class 300, Flanges Weld Neck | US $15.7 Per KG |
| Flanges Blind, RF, Class 300, 3/4 A105N | US $15.95 Per KG |
| Slip On Flanges, 300 RF, A182 GR F304/304L, 2 Inch, SCH 80 | US $470.13 Per KG |
| Class 300, 4 Inch, Flanges Weld Neck, RF, Sch 40/Std A105N | US $43.70 Per KG |
| Slip On Flanges, 300 RF, A182 GR F304/304L, 3/4 Inch, SCH 120 | US $413.76 Per KG |
| B16.5, A182 F316/F316L, Blind Flanges, RF, CLASS 300, 1/2' | US $36.72 Per KG |
| CLASS 300 PSI, 3 INCH, Blind Flanges, SCH 40, RF | US $235.12 Per KG |
| ANSI 300 LB FLANGES END, 4 IN, 8 HOLE, | US $135.70 Per KG |
| RF, Class 300, 2 Inch, Flanges Weld Neck, Sch80/XS A105N | US $102.27 Per KG |
| Class 300, 3/4 Inch, Flanges Weld Neck, RF, Sch 80/XS A105N | US $11.23 Per KG |
Review the commercial benefits of the 300 LB flange and class 300 WNRF flange, along with leak-proofness test reports
Types Of ASME B16.5 Class 300 Forged Flanges
ANSI 300 Slip On Flanges
Class 300 Blind Flanges
Class 300 Welding Neck Flanges
Class 300 Socket Weld Flanges
Class 300 Plate Flanges
ASME B16.5 Class 300 Lap Joint Flanges
300 LBS Threaded Flanges
ASME 300LB Raised Face Flanges
Class 300 High Hub Blind Flanges
Class 300 Pipe Flanges
Class 300 Stainless Steel Flanges
Class 300 Carbon Steel Flanges
Class 300 Flange Dimensions In Mm
| NPS | OD | WT | Length Of Overall | B.C. | Bolts Holes Number | O.D. of R/F | |||
| WNRF | SORF And SWRF | (Loose) | |||||||
| (O) | (Q) | (Y) | (Dia.) | (No.) | (Dia.) | (R) | |||
| 1/2 | 95 | 14.3 | 52.4 | 22.2 | 22.2 | 666.5 | 4 | 15 | 35 |
| 3/4 | 117 | 15.9 | 57.2 | 25.4 | 25.4 | 82.4 | 4 | 19 | 43 |
| 1 | 124 | 17.5 | 61.9 | 27.0 | 27.0 | 89.0 | 4 | 19 | 51 |
| 1-1/4 | 133 | 19.1 | 65.1 | 27.0 | 27.0 | 98.5 | 4 | 19 | 64 |
| 1-1/2 | 156 | 20.7 | 68.3 | 30.2 | 30.2 | 114.5 | 4 | 22 | 73 |
| 2 | 165 | 22.3 | 69.8 | 33.3 | 33.3 | 127.0 | 8 | 19 | 92 |
| 2-1/2 | 190 | 25.4 | 76.2 | 38.1 | 38.1 | 149.0 | 8 | 22 | 105 |
| 3 | 210 | 28.6 | 79.4 | 42.9 | 42.9 | 168.0 | 8 | 22 | 127 |
| 4 | 254 | 318 | 85.7 | 47.6 | 47.6 | 200.0 | 8 | 22 | 157 |
| 5 | 279 | 35.0 | 98.4 | 50.8 | 50.8 | 235.0 | 8 | 22 | 186 |
| 6 | 313 | 36.6 | 98.4 | 52.4 | 52.4 | 270.0 | 12 | 22 | 216 |
| 6 | 381 | 413 | 111.1 | 61.9 | 91.9 | 330.0 | 12 | 25 | 270 |
| 10 | 444 | 47.7 | 117.5 | 66.7 | 95.3 | 387.5 | 16 | 29 | 324 |
| 12 | 521 | 50.8 | 130.2 | 73.0 | 101.6 | 451.0 | 16 | 32 | 381 |
| 14 | 584 | 54.0 | 142.9 | 76.2 | 111.1 | 514.5 | 20 | 32 | 413 |
| 16 | 648 | 57.2 | 146.0 | 82.6 | 120.7 | 571.5 | 20 | 35 | 470 |
| 18 | 711 | 60.4 | 158.8 | 88.9 | 130.2 | 628.5 | 24 | 35 | 533 |
| 20 | 775 | 63.5 | 161.9 | 95.2 | 139.7 | 686.0 | 24 | 35 | 584 |
| 24 | 914 | 69.9 | 168.3 | 106.4 | 152.4 | 843.0 | 24 | 41 | 692 |
Learn about the flange ANSI b16 5 class 300 weight and pressure rating in RTJ/ RF/ FF face types
Class 300 Flange Pressure Rating
| Temperature (in F°) | Class 300 Flanges |
| 100 | 740 |
| 200 | 680 |
| 300 | 655 |
| 400 | 635 |
| 500 | 605 |
| 600 | 570 |
| 650 | 550 |
| 700 | 530 |
| 750 | 505 |
| 800 | 410 |
| 850 | 320 |
| 900 | 230 |
| 950 | 135 |
| 1000 | 85 |
| Normal Size In Inch | Normal Size In MM | SORF SWRF |
WNRF | BLRF |
|---|---|---|---|---|
| 1/2 | 15 | 0.4 | 0.5 | 0.4 |
| 3/4 | 20 | 0.6 | 0.7 | 0.6 |
| 1 | 25 | 0.8 | 1 | 0.9 |
| 1 1/4 | 32 | 1 | 1.3 | 1.2 |
| 1 1/2 | 40 | 1.3 | 1.7 | 1.5 |
| 2 | 50 | 2.1 | 2.6 | 2.4 |
| 2 1/2 | 65 | 3.3 | 4.1 | 3.9 |
| 3 | 80 | 3.9 | 4.9 | 4.9 |
| 3 1/2 | 90 | 4.8 | 6.1 | 6.2 |
| 4 | 100 | 5.3 | 6.8 | 7.0 |
| 5 | 125 | 6.1 | 8.6 | 8.6 |
| 6 | 150 | 7.5 | 10.6 | 11.3 |
| 8 | 200 | 12.1 | 17.6 | 19.6 |
| 10 | 250 | 16.5 | 24 | 28.6 |
| 12 | 300 | 26.2 | 36.5 | 43.2 |
| 14 | 350 | 34.6 | 48.4 | 58.1 |
| 16 | 400 | 44.8 | 60.6 | 76.1 |
| 18 | 450 | 48.9 | 68.3 | 93.7 |
| 20 | 500 | 61.9 | 84.5 | 122.0 |
Class 300 Raised Face Flange Dimensions
ASME | NPS | OD | OD | WT | Diameter | Diameter | No. | Diameter |
|---|---|---|---|---|---|---|---|---|
| Diameter | Diameter Of | OF Flanges | OF Circle Of | OF Holes | ||||
| Class | Pipe Size | OF Bolt | OF Bolt | |||||
| Of Flanges | R/F | TTf | Bolts | Bolts | ||||
| 300 | 6 | 12.50 | 8.50 | 1.38 | 10.62 | 0.88 | 12 | 0.75 |
| 8 | 15.00 | 10.62 | 1.56 | 13.00 | 1.00 | 12 | 0.87 | |
| 10 | 17.50 | 12.75 | 1.82 | 15.25 | 1.12 | 16 | 1.00 | |
| 12 | 20.50 | 15.00 | 1.94 | 17.75 | 1.25 | 16 | 1.12 | |
| 14 | 23.00 | 16.25 | 2.06 | 20.25 | 1.25 | 20 | 1.12 | |
| 16 | 25.50 | 18.50 | 2.19 | 22.50 | 1.38 | 20 | 1.25 | |
| 18 | 28.00 | 21.00 | 2.31 | 24.75 | 1.38 | 24 | 1.25 | |
| 20 | 30.50 | 23.00 | 2.44 | 27.00 | 1.38 | 24 | 1.25 | |
| 1 | 4.88 | 2.00 | 0.69 | 3.50 | 0.75 | 4 | 0.62 | |
| 1 1/2 | 6.12 | 2.88 | 0.88 | 4.50 | 0.88 | 4 | 0.75 | |
| 2 | 6.50 | 3.62 | 1.00 | 5.00 | 0.75 | 8 | 0.62 | |
| 3 | 8.25 | 5.00 | 1.25 | 6.62 | 0.88 | 8 | 0.75 | |
| 4 | 10.75 | 6.19 | 1.50 | 8.50 | 1.00 | 8 | 0.87 |
Class 300 Bleed & Drip Ring Dimensions
| NPS | ID |
| 1 | 63.5 |
| 1.1/2 | 82.6 |
| 2 | 101.6 |
| 2.1/2 | 120.7 |
| 3 | 133.4 |
| 4 | 171.5 |
| 6 | 219.1 |
| 8 | 276.2 |
| 10 | 336.6 |
| 12 | 406.4 |
300 LBS Spades And Ring Spacers Dimensions
| NPS | OD (A) | ID Of (B) | Center-to-End (C) | WT Of (T) | Handle Width Of W |
| 1/2 | 51 | 16 | 129 | 6.4 | 32 |
| 3/4 | 64 | 21 | 136 | 6.4 | 32 |
| 1 | 70 | 27 | 139 | 6.4 | 32 |
| 1.1/4 | 79 | 42 | 150 | 6.4 | 32 |
| 1.1/2 | 92 | 48 | 150 | 6.4 | 32 |
| 2 | 108 | 61 | 158 | 9.7 | 32 |
| 2.1/2 | 127 | 73 | 177 | 9.7 | 32 |
| 3 | 146 | 89 | 177 | 9.7 | 32 |
| 3.1/2 | 162 | 102 | 205 | 12.7 | 38 |
| 4 | 178 | 114 | 205 | 12.7 | 38 |
| 5 | 213 | 141 | 240 | 15.7 | 38 |
| 6 | 248 | 168 | 240 | 15.7 | 38 |
| 8 | 305 | 219 | 281 | 22.4 | 38 |
| 10 | 359 | 273 | 333 | 25.4 | 44 |
| 12 | 419 | 324 | 363 | 28.4 | 44 |
| 14 | 483 | 356 | 395 | 31.8 | 44 |
| 16 | 536 | 406 | 422 | 38.1 | 44 |
| 18 | 594 | 457 | 450 | 41.1 | 51 |
| 20 | 651 | 508 | 480 | 44.5 | 51 |
| 24 | 772 | 610 | 540 | 50.8 | 51 |
300# Studding Outlet Dimensions
| Normal Size Bore | OD | WT | OD of R/F | Stud Circle | Hole Dia. | No. Of Holes | Hole Depth | Tap Size | T.P.I. | Tap Depth |
|---|---|---|---|---|---|---|---|---|---|---|
| (B) | (O) | (T) | (R) | (C) | () | () | (U) | () | () | (V) |
| 1/2 | 3.75 | 1.25 | 1.38 | 2.62 | 27/64 | 4 | 0.88 | 1/2 | 13 | 0.56 |
| 3/4 | 4.62 | 1.5 | 1.69 | 3.25 | 17/32 | 4 | 1.12 | 5/8 | 11 | 0.75 |
| 1 | 4.88 | 1.5 | 2 | 3.5 | 17/32 | 4 | 1.12 | 5/8 | 11 | 0.75 |
| 1 1/4 | 5.25 | 1.5 | 2.5 | 3.88 | 17/32 | 4 | 1.12 | 5/8 | 11 | 0.75 |
| 1 1/2 | 6.12 | 1.75 | 2.88 | 4.5 | 21/32 | 4 | 1.31 | 3/4 | 10 | 0.88 |
| 2 | 6.5 | 1.5 | 3.62 | 5 | 17/32 | 8 | 1.12 | 5/8 | 11 | 0.75 |
| 2 1/2 | 7.5 | 1.75 | 4.12 | 5.88 | 21/32 | 8 | 1.31 | 3/4 | 10 | 0.88 |
| 3 | 8.25 | 1.75 | 5 | 6.62 | 21/32 | 8 | 1.31 | 3/4 | 10 | 0.88 |
| 3 1/2 | 9 | 1.75 | 5.5 | 7.25 | 21/32 | 8 | 1.31 | 3/4 | 10 | 0.88 |
| 4 | 10 | 1.75 | 6.19 | 7.88 | 21/32 | 8 | 1.31 | 3/4 | 10 | 0.88 |
| 5 | 11 | 1.75 | 7.31 | 9.25 | 21/32 | 8 | 1.31 | 3/4 | 10 | 0.88 |
| 6 | 12.5 | 1.75 | 8.5 | 10.62 | 21/32 | 12 | 1.31 | 3/4 | 10 | 0.88 |
| 8 | 15 | 1.88 | 10.62 | 13 | 49/64 | 12 | 1.44 | 7/8 | 9 | 1 |
| 10 | 17.5 | 2.12 | 12.75 | 15.25 | 7/8 | 16 | 1.56 | 1 | 8 | 1.12 |
| 12 | 20.5 | 2.25 | 15 | 17.75 | 1 | 16 | 1.81 | 1 1/8 | 8 | 1.25 |
| 14 | 23 | 2.25 | 16.25 | 20.25 | 1 | 20 | 1.81 | 1 1/8 | 8 | 1.25 |
| 16 | 25.5 | 2.5 | 18.5 | 22.5 | 1 1/8 | 20 | 2.12 | 1 1/4 | 8 | 1.44 |
| 18 | 28 | 2.5 | 21 | 24.75 | 1 1/8 | 24 | 2.12 | 1 1/4 | 8 | 1.44 |
| 20 | 30.5 | 2.5 | 23 | 27 | 1 1/8 | 24 | 2.12 | 1 1/4 | 8 | 1.44 |
| 24 | 36 | 2.88 | 27.25 | 32 | 1 3/8 | 24 | 2.38 | 1 1/2 | 8 | 1.69 |
ANSI B16.5 Class 300 FF Flange Dimensions
| Normal Size | Diameter Of Pipe | ID | No. of holes | Diameter Of Flanges | Thickness of Flange | B.C Dia. | Bolt Holes Dia. | |
| (DN) | (ISO) | (DIN) | (D5) | (BN) | (D) | (b) | (K) | (d2) |
| 10 | – | 14 | 14.5 | 4 | 90 | 16 | 60 | 14 |
| 17.2 | – | 17.7 | 4 | 90 | 16 | 60 | 14 | |
| 15 | – | 20 | 21 | 4 | 95 | 16 | 65 | 14 |
| 21.3 | – | 22 | 4 | 95 | 16 | 65 | 14 | |
| 20 | – | 25 | 26 | 4 | 105 | 18 | 75 | 14 |
| 26.9 | – | 27.6 | 4 | 105 | 18 | 75 | 14 | |
| 25 | – | 30 | 31 | 4 | 115 | 18 | 85 | 14 |
| 33.7 | – | 34.4 | 4 | 115 | 18 | 85 | 14 | |
| 32 | – | 38 | 39 | 4 | 140 | 18 | 100 | 18 |
| 42.4 | – | 43.1 | 4 | 140 | 18 | 100 | 18 | |
| 40 | – | 44.5 | 45.5 | 4 | 150 | 18 | 110 | 18 |
| 48.3 | – | 49 | 4 | 150 | 18 | 110 | 18 | |
| 50 | – | 57 | 58.1 | 4 | 165 | 20 | 125 | 18 |
| 60.3 | – | 61.1 | 4 | 165 | 20 | 125 | 18 | |
| 65 | 76.1 | – | 77.1 | 8 | 185 | 22 | 145 | 18 |
| 80 | 88.9 | – | 90.3 | 8 | 200 | 24 | 160 | 18 |
| 100 | – | 108 | 109.6 | 8 | 235 | 24 | 190 | 22 |
| 114.3 | – | 115.9 | 8 | 235 | 24 | 190 | 22 | |
| 125 | – | 133 | 134.8 | 8 | 270 | 26 | 220 | 26 |
| 139.7 | – | 141.6 | 8 | 270 | 26 | 220 | 26 | |
| 150 | – | 159 | 161.1 | 8 | 300 | 28 | 250 | 26 |
| 168.3 | – | 170.5 | 8 | 300 | 28 | 250 | 26 | |
| 175 | 193.7 | – | 196.1 | 12 | 350 | 32 | 295 | 30 |
| 200 | 219.1 | – | 221.8 | 12 | 375 | 34 | 320 | 30 |
| 250 | – | 267 | 270.2 | 12 | 450 | 38 | 385 | 33 |
| 273 | – | 276.2 | 12 | 450 | 38 | 385 | 33 | |
| 300 | 323.9 | – | 327.6 | 16 | 515 | 42 | 450 | 33 |
| 350 | 355.6 | – | 359.7 | 16 | 580 | 46 | 510 | 36 |
| – | 368 | 372.2 | 16 | 580 | 46 | 510 | 36 | |
| 400 | 406.4 | – | 411 | 16 | 660 | 50 | 585 | 39 |
| – | 419 | 423.7 | 16 | 660 | 50 | 585 | 39 | |
| 500 | 508 | – | 513.6 | 20 | 755 | 52 | 670 | 42 |
| 600 | 610 | – | 616.5 | 20 | 890 | 54 | 795 | 48 |
| 700 | 711 | – | 716 | 24 | 995 | 58 | 900 | 48 |
| 800 | 813 | – | 818 | 24 | 1140 | 64 | 1030 | 56 |
| 900 | 914 | – | 920 | 28 | 1250 | 70 | 1140 | 56 |
| 1000 | 1016 | – | 1022 | 28 | 1360 | 78 | 1250 | 56 |
Class 300 ANSI B16.5 Forged Flanges Bolt Size
| Normal Pipe | Class 300 Flanges | ||||
| Bolts Circle Dia. | Bolts Dia. | No. Of Bolts | Length Of Bolts | ||
| Stud Bolts R/F |
Machine Bolts R/F |
||||
| 1/2 | 2-5/8 | 1/2 | 4 | 2-1/2 | 2 |
| 3/4 | 3-1/4 | 5/8 | 4 | 2-3/4 | 2-1/2 |
| 1 | 3-1/2 | 5/8 | 4 | 3 | 2-1/2 |
| 1-1/4 | 3-7/8 | 5/8 | 4 | 3 | 2-3/4 |
| 1-1/2 | 3-1/2 | 3/4 | 4 | 3-1/2 | 3 |
| 2 | 5 | 5/8 | 8 | 3-1/4 | 3 |
| 2-1/2 | 5-7/8 | 3/4 | 8 | 3-3/4 | 3-1/4 |
| 3 | 6-5/8 | 3/4 | 8 | 4 | 3-1/2 |
| 3-1/2 | 7-1/4 | 3/4 | 8 | 4-1/4 | 3-3/4 |
| 4 | 7-7/8 | 3/4 | 8 | 4-1/4 | 3-3/4 |
| 5 | 9-1/4 | 3/4 | 8 | 4-1/2 | 4 |
| 6 | 10-5/8 | 3/4 | 12 | 4-3/4 | 4-1/4 |
| 8 | 13 | 7/8 | 12 | 5-1/4 | 4-3/4 |
| 10 | 15-1/4 | 1 | 16 | 6 | 5-1/4 |
| 12 | 17-3/4 | 1-1/8 | 16 | 6-1/2 | 5-3/4 |
| 14 | 20-1/4 | 1-1/8 | 20 | 6-3/4 | 6 |
| 16 | 22-1/2 | 1-1/4 | 20 | 7-1/4 | 6-1/2 |
| 18 | 24-3/4 | 1-1/4 | 24 | 7-1/2 | 6-3/4 |
| 20 | 27 | 1-1/4 | 24 | 8 | 7 |
| 22 | 29-1/4 | 1-1/2 | 24 | 8-3/4 | 7-1/2 |
| 24 | 32 | 1-1/2 | 24 | 9 | 7-3/4 |
| Normal Size In (inches) |
Class 300 Flanges | ||||
|---|---|---|---|---|---|
| Flanges Diameter | Bolts Number | Bolts Diameter | Diameter Of Bolt Holes | B.C. | |
| 1/4 | 3-3/8 | 4 | 1/2 | 0.62 | 2-1/4 |
| 1/2 | 3-3/4 | 4 | 1/2 | 0.62 | 2-5/8 |
| 3/4 | 4-5/8 | 4 | 5/8 | 0.75 | 3-1/4 |
| 1 | 4-7/8 | 4 | 5/8 | 0.75 | 3-1/2 |
| 1-1/4 | 5-1/4 | 4 | 5/8 | 0.75 | 3-7/8 |
| 1-1/2 | 6-1/8 | 4 | 3/4 | 0.88 | 4-1/2 |
| 2 | 6-1/2 | 8 | 5/8 | 0.75 | 5 |
| 2-1/2 | 7-1/2 | 8 | 3/4 | 0.88 | 5-7/8 |
| 3 | 8-1/4 | 8 | 3/4 | 0.88 | 6-5/8 |
| 3-1/2 | 9 | 8 | 3/4 | 0.88 | 7-1/4 |
| 4 | 10 | 8 | 3/4 | 0.88 | 7-7/8 |
| 5 | 11 | 8 | 3/4 | 0.88 | 9-1/4 |
| 6 | 12-1/2 | 12 | 3/4 | 0.88 | 10-5/8 |
| 8 | 15 | 12 | 7/8 | 1 | 13 |
| 10 | 17-1/2 | 16 | 1 | 1.12 | 15-1/4 |
| 12 | 20-1/2 | 16 | 1-1/8 | 1.25 | 17-3/4 |
| 14 | 23 | 20 | 1-1/8 | 1.25 | 20-1/4 |
| 16 | 25-1/2 | 20 | 1-1/4 | 1.38 | 22-1/2 |
| 18 | 28 | 24 | 1-1/4 | 1.38 | 24-3/4 |
| 20 | 30-1/2 | 24 | 1-1/4 | 1.38 | 27 |
| 24 | 36 | 24 | 1-1/2 | 1.62 | 32 |
Class 300 Flange Gasket Dimensions In Mm
| Normal Pipe Size In Inch | (I.D.) Gasket | (O.D.) Gasket |
|---|---|---|
| Class 300 | ||
| 1/2 | 1.875 | 2.125 |
| 3/4 | 2.25 | 2.625 |
| 1 | 2.625 | 2.875 |
| 1 1/4 | 3 | 3.25 |
| 1 1/2 | 3.375 | 3.75 |
| 2 | 4.125 | 4.375 |
| 2 1/2 | 4.875 | 5.125 |
| 3 | 5.375 | 5.875 |
| 4 | 6.875 | 7.125 |
| 5 | 7.75 | 8.50 |
| 6 | 8.75 | 9.875 |
| 8 | 11 | 12.125 |
| 10 | 13.375 | 14.25 |
What is the maximum pressure a Class 300 WNRF flange can handle?
150# Weld neck flanges typically tolerate more pressure in crucial sectors, e.g., petrochemicals, nuclear power, etc. A Class 300 WNRF flange endures 740 psi up to 100°F. Even so, this figure drops sharply to 680 psi at 200°F – rising temperatures bring capacities down.
What problems do buyers experience when purchasing a Class 300 slip on flange?
Rapid installation without expert welding and lower costs make a Class 300 slip on flange ideal for low pressures. However, buyers must guarantee conformity with international dimensional tolerance and quality standards.
Finding custom sizes for Class 300 orifice flanges is challenging. Many vendors encounter delayed delivery or product damage during unloading.
Our company is committed to providing different flange types, including slip on and a 300# lap joint flange, for unique needs.
How can I select the schedule and sizes for my ANSI 300 RF flange application?
The schedule of the ANSI 300 RF flange application affects its safety and performance. Incompatibility between the inner diameters (flange/pipe) induces leakage.
A 300 LB raised face flange must match the piping schedule to avoid mismatches.