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Specification Of Carbon Steel Class 300 Pipe Flanges, Check Dimensions Of 300 Lb Stainless Steel Flange.


ASME B16.5 is a standard that covers both different types of flanges and flange fittings for piping systems. One such type is the weld neck ASME B16.5 Class 300 Flangewhich consists of a circular fitting that has a protruding rim around its circumference. The rim of the flanges has a series of drilled holes that allow the flanges to be fixed to another flange with the use of bolts. Generally machined from a forging, it is not unusual for these Welding Neck Flange ASME B16.5 Class 300 butt welded to a pipe in a system.


One of the parameters covered by the standard, which was revised in 1996 includes its pressure-temperature ratings for e.g Class 300 Pipe Flanges Pressure Rating. Apart from the ratings, the specification takes into account many parameters such as materials, tolerances, dimensions for e.g. 1 inch Flanges 300# Dimension, marking, testing. Moreover, the methods of designating openings for pipe flanges and flanged fittings are also a part of the specification.


ASME B16.5 Class 300 Flange
ASME B16.5 Class 300 Flange
Stainless Steel 300lb Flanges
Stainless Steel 300lb Flanges
Carbon Steel 300# Flange
Carbon Steel 300# Flange


1 inch Flanges 300# Manufacturers In India, Get Flanges 300# At Best Price In India, View Carbon Steel 300 Lb Blind Flange Weight Chart.


What Is ASME B16.5 Class 300 Flange?


Typically the ASME B16.5 is a standard that takes into consideration flanges with the following rating class designations i.e. # 150, # 300, # 400, # 600, # 900, # 1500, and # 2500. Carbon Steel Class 300 Pipe Flanges are available across the market in sizes that range from NPS 1/2 through NPS 24, their requirements given in both metric as well as in U.S units. The Standard is limited to different flanges and their corresponding fittings made from cast or forged materials, or plate materials. Also included in this Standard are requirements and recommendations regarding 300 Lb Stainless Steel Flange bolting, flanges gaskets, along with flanges joints.


Class 300 Pipe Flanges Specification


Specification : ASME B16.5 Class 300 Flange
Size Chart : 1/2″ (15 NB) To 48″ (1200NB)
Production Process: Forged, Heat Treated and Machined
Supporting Flange Material: Flange Bolts, Ring Joint, Gasket
Common Types of Classes 300LB Flange : Flange 300 LB WNRF
Classes 300 RTJ
300# BLRF
Classes 300 SORF
Connect Type Type: SMF, RF, FF, LJF, LMF, RTJ
Pressure Rating Table: Class 150 LBS, Class 300 LBS, Class 600 LBS, Class 900 LBS, Class 1500 LBS, Class 2500 LBS
Application: Natural Gas Industry
Water Pipeline Industry
Chemical Industry
Oil And Gas Industry
Fabrication Industry
Nuclear Power Plant
Standards : ASME B16.38 Flange, UNI Flange, ASME B16.47 (Series A, Series B) Flange, PN Flange, ISO Flange, JIS Flange, MSS SP44 Flange, EN-1092 Flange, BS10 Flange, ASME B16.5 Flange, AWWA Flange, DIN Flange, GOST Flange
Design For Size: ANSI, ASME, ASA, PN, JIS, EN, DIN, BS
Machining Equipment: Electric bevelling machine, Bending machine, Press machine, Pushing Machine, Sand-blasting machine etc
Coating Flanges Faces : Anti-rust Paint, Zinc Plated, Oil Black Paint, Yellow Transparent, Cold and Hot Dip Galvanized

ANSI B16.5 300# Flange Dimensions


NPS Outside
diameter of
flanges
Mini.
thick.
of flanges
Overall Length Bolt
Circle
No. and
Size of
Holes
O.D. of
raised
face
Welding
neck
Slip-on
& socket
welding
Lap Joint
O Q Y Diammeter Number diameter 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

View Welding Neck Flange ASME B16.5 Class 300 Size Chart, Class 300 Pipe Flanges Suppliers In India, Threaded Flange Class 300 Pressure Rating, Thickness Of ASTM A105 Class 300 Flange.


Types Of 300 Lb Stainless Steel Flange


300# Rf Threaded Flange

300# Rf Threaded Flange

ANSI B16.5 Class 300 Lap Joint Flanges

ANSI B16.5 Class 300 Lap Joint Flange

Class 300 Long Weld Neck Flanges

Class 300 Long Weld Neck Flange

ANSI/ASME B16.5 Class 300 Forged Flanges

ANSI/ASME B16.5 Class 300 Forged Flange

Class 300 Plate Flange

Class 300 Plate Flange

ANSI 300 Square Flange

ANSI 300 Square Flange

Class 300 Puddle Flange

Class 300 Puddle Flanges

ANSI 300 Flange Adapter

ANSI 300 Flange Adapter

A105 / SS316 Forged Class 300 Expander Flange

classes 300 Expander Flange

Stainless steel 304 ANSI B16.5 Class 300 Socket-weld Flanges

ANSI B16.5 Class 300 Socket-weld Flange

300# High hub Blind Flange

300# High hub Blind Flange

Welding Neck Flange ANSI B16.5 300 Lbs

Welding Neck Flange ANSI B16.5 300 Lbs


Welding Neck Flange ASME B16.5 Class 300 Weight Chart


CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
300 lb ½ 1 1 2 1 2 2
¾ 2 2 2 2 2 2
1 2 2 2 2 2 3
3 3 3 3 3 3
3 3 3 3 4 4
2 5 5 5 5 5 6
8 8 8 8 7 10
3 9 9 9 9 9 11.5
11 12 11 11 13 12
4 13 13 13 13 17 16.5
5 15 15 15 15 20 21
6 19 19 19 19 27 26
8 30 30 30 30 47 42
10 43 43 43 43 70 54
12 64 64 64 64 123 88
14 90 90 90 105 140 114
16 106 98 98 140 180 140
18 130 130 130 160 220 165
20 165 165 165 195 285 197
22 185 185 185 245 355 225
24 220 220 220 275 430 268

Flanges 300# Pressure Rating


Temperature (in F°)
300#
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
Hydrostatic Test Pressure (psig)
1125

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300# Flange Bolt Size


Class 300 Flanges
Nominal Pipe Size
# Bolts or Studs
Dia of Bolts or Studs
Length of Stud
1/16 RF
RTJ
1/2
4
0.50
2-1/4
-
3/4
4
0.50
2-1/2
-
1
4
0.50
2-1/2
3
1-1/4
4
0.50
2-3/4
3-1/4
1-1/2
4
0.50
2-3/4
3-1/4
2
4
0.63
3-1/4
3-3/4
2-1/2
4
0.63
3-1/2
4
3
4
0.63
3-1/2
4
3-1/2
8
0.63
3-1/2
4
4
8
0.63
3-1/2
4
5
8
0.75
3-3/4
4-1/4
6
8
0.75
4
4-1/2
8
8
0.75
4-1/4
4-3/4
10
12
0.88
4-1/2
5
12
12
0.88
4-3/4
5-1/4
14
12
1.00
5-1/4
5-3/4
16
16
1.00
5-1/4
5-3/4
18
16
1.13
5-3/4
6-1/4
20
20
1.13
6-1/4
6-3/4
24
20
1.25
6-3/4
7-1/4

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ASTM A105 Class 300 Flange Size Chart


NPS
NPS
(inch)
Class 300
Diammeter of
Flange
(inch)
No.
of
Bolts
Diammeter of
Bolts
(inch)
Diammeter of
Bolt Holes
(inch)
Bolt
Circle
(inch)
1/4 3-3/8 4 1/2 0.62 2-1/4
1/2 3-1/2 4 1/2 0.62 2-3/8
3/4 3-7/8 4 1/2 0.62 2-3/4
1 4-1/4 4 1/2 0.62 3-1/8
1-1/4 4-5/8 4 1/2 0.62 3-1/2
1-1/2 5 4 1/2 0.62 3-7/8
2 6 4 5/8 0.75 4-3/4
2-1/2 7 4 5/8 0.75 5-1/2
3 7-1/2 4 5/8 0.75 6
3-1/2 8-1/2 8 5/8 0.75 7
4 9 8 5/8 0.75 7-1/2
5 10 8 3/4 0.88 8-1/2
6 11 8 3/4 0.88 9-1/2
8 13-1/2 8 3/4 0.88 11-3/4
10 16 12 7/8 1 14-1/4
12 19 12 7/8 1 17
14 21 12 1 1.12 18-3/4
16 23-1/2 16 1 1.12 21-1/4
18 25 16 1-1/8 1.25 22-3/4
20 27-1/2 20 1-1/8 1.25 25
24 32 20 1-1/4 1.38 29-1/2