Class 300 flange supplier in UAE

Refer ASME B16.5 300 LB forged flanges dimensions in MM


Class 300 Flange

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



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
300 LBS Flanges

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


300LB Flanges Price List


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

ANSI 300 Slip On Flanges

Class 300 Blind Flanges

Class 300 Blind Flanges

Class 300 Welding Neck Flanges

Class 300 Welding Neck Flanges

Class 300 Socket Weld Flanges

Class 300 Socket Weld Flanges

Class 300 Plate Flanges

Class 300 Plate Flanges

ASME B16.5 Class 300 Lap Joint Flanges

ASME B16.5 Class 300 Lap Joint Flanges

300 LBS Threaded Flanges

300 LBS Threaded Flanges

ASME 300LB Raised Face Flanges

ASME 300LB Raised Face Flanges

Class 300 High Hub Blind Flanges

Class 300 High Hub Blind Flanges

Class 300 Pipe Flanges

Class 300 Pipe Flanges

Class 300 Stainless Steel Flanges

Class 300 Stainless Steel Flanges

Class 300 Carbon Steel Flanges

Class 300 Carbon Steel Flanges


Class 300 Flange Dimensions In Mm


Class 300 Flange Dimensions In Mm

NPSODWTLength Of OverallB.C.Bolts Holes NumberO.D. of R/F
WNRFSORF And SWRF
(Loose)
(O)(Q)(Y)(Dia.)(No.)(Dia.)(R)
1/29514.352.422.222.2666.541535
3/411715.957.225.425.482.441943
112417.561.927.027.089.041951
1-1/413319.165.127.027.098.541964
1-1/215620.768.330.230.2114.542273
216522.369.833.333.3127.081992
2-1/219025.476.238.138.1149.0822105
321028.679.442.942.9168.0822127
425431885.747.647.6200.0822157
527935.098.450.850.8235.0822186
631336.698.452.452.4270.01222216
6381413111.161.991.9330.01225270
1044447.7117.566.795.3387.51629324
1252150.8130.273.0101.6451.01632381
1458454.0142.976.2111.1514.52032413
1664857.2146.082.6120.7571.52035470
1871160.4158.888.9130.2628.52435533
2077563.5161.995.2139.7686.02435584
2491469.9168.3106.4152.4843.02441692


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


300# Flange Weight


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


Class 300 Raised Face Flange Dimensions

ASME

NPS

ODODWTDiameterDiameterNo.Diameter
DiameterDiameter OfOF FlangesOF Circle Of OF Holes
Class Pipe SizeOF BoltOF Bolt
Of FlangesR/FTTfBoltsBolts
300612.508.501.3810.620.88120.75
815.0010.621.5613.001.00120.87
1017.5012.751.8215.251.12161.00
1220.5015.001.9417.751.25161.12
1423.0016.252.0620.251.25201.12
1625.5018.502.1922.501.38201.25
1828.0021.002.3124.751.38241.25
2030.5023.002.4427.001.38241.25
14.882.000.693.500.7540.62
1 1/26.122.880.884.500.8840.75
26.503.621.005.000.7580.62
38.255.001.256.620.8880.75
410.756.191.508.501.0080.87


Class 300 Bleed & Drip Ring Dimensions


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


300 LBS Spades And Ring Spacers Dimensions

NPSOD (A)ID Of
(B)
Center-to-End
(C)
WT Of
(T)
Handle
Width Of W
1/251161296.432
3/464211366.432
170271396.432
1.1/479421506.432
1.1/292481506.432
2108611589.732
2.1/2127731779.732
3146891779.732
3.1/216210220512.738
417811420512.738
521314124015.738
624816824015.738
830521928122.438
1035927333325.444
1241932436328.444
1448335639531.844
1653640642238.144
1859445745041.151
2065150848044.551
2477261054050.851


300# Studding Outlet Dimensions


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


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


No. Of 300# Flange Bolt Holes


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


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.