Ansi B16.5 Class 300 Flange

Engineers and pipe fitters can calculate the number of fasteners needed based on the flange size with the help of the 300# flange bolt table. More pressure can be handled by a Class 30 300 lb flange than by a Class 150 flange. This is so that a Class 3 300 lb flange dimensions can resist higher pressure and be built with more metal. However, a lot of variables could affect how much pressure an 8 300 lb flange can withstand.

Table of Content

The technical Class 300 Lb Blind Flange Dimensions, Check ANSI B16.5 class 300 flange dimensions in mm, ANSI B16 5 class 300 Flange Price in India

For all flanges, the Pressure Class or Rating must be specified in pounds. A Pressure Class must be identified by a different name. For instance, the dimensions of a blind flange for 300 lb or 300 lbs or 300# or Class 300 lb are the same.

Steel pipe 300 lb flange gasket dimensions are typically categorised in accordance with ASME B16.5 standard. These flanges have pressure ratings ranging from 150 # to 2500 #. The 300 lb weld neck flange dimensions' pressure rating is denoted by the terms "lb," "class," and "#," respectively. The truth is that a pressure rating of 300 psi and 300 lb are unrelated. The 300 lb pipe flange dimensions pressure rating is dependent on the type of material used, such as A105, stainless steel, nickel alloy, etc. The heat treat condition and pressure "class" also affect the 300 lb ansi flange dimensions' pressure rating.

Threaded Flange Class 300 Pressure Rating, Slip On Flange Dimensions 300#, Check Class 300 Flange Dimensions In Inches

It is important not to mix the term "class" used in the ansi b16.5 class 300 flange dimensions in mm with pressure "rating." Dimensions for ASME B16.5 Class slip-on flanges in 300# range from DN10 to DN5000, or 12 inch (15 NB) to 48 inch (1200 NB). There are several different major varieties of 300 lb slip on flange dimensions, including forged, threaded, screwed, and plate types. Ring Joint, Gasket, and 28 300 lb flange dimensions Bolts are used as the 300 lb raised face flange dimensions supporting material.

Class 300 lb orifice flange applications include connecting pipes and tubes in the construction, petroleum, power, chemical, gas, metallurgy, shipbuilding, etc. sectors. The major markets and industries that employ nuclear power (mainly seamless), bitumen upgraders, heavy oil refineries, as well as petrochemicals and acids, are those that use equipment with Class 300 lb long weld neck flange specifications.

 

Specification Of Class 300 Flange
Specifications Class 300 Flanges
ASME B16.5 Class 300 Flange size range 1/2" (15 NB) to 48" (1200NB) DN10~DN5000
ansi b16.5 Class 300 Flanges Standards B16.47 Series A & B, ANSI/ASME B16.5, BS4504, B16.48, EN-1092, BS 10, DIN, ANSI Flanges, BS Flanges, ASME Flanges, EN Flanges, DIN Flanges, GOST Flanges.
ansi b16.5 Class 300 Flange Standard DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
ansi b16.5 Class 300 Flange Standard JIS 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
ansi b16.5 Class 300 Flange Standard UNI 6Bar 10Bar 16Bar 25Bar 40Bar
ansi b16.5 Class 300 Flange Standard EN 6Bar 10Bar 16Bar 25Bar 40Bar
Main Types Threaded / Forged / Plate /Screwed
Flange supporting material Ring Joint, Gasket, Flange Bolts
ansi b16.5 Class 300 Pipe Flanges Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
Most common types of ansi b16.5 Class 300Flanges
  • Slip-On Ring Flange (SORF), Class 300
  • Weld Neck Ring Flange (WNRF), Class 300
  • Threaded Ring Flange, Class 300
  • Socket Weld Ring Flange (SWRF), Class 300
  • Blind Ring Flange (BLRF), Class 300
  • Ring Type Joint Flange (RTJF), Class 300
  • Lap Joint Ring Flange (LJRF), Class 300
Production technique
  • Forged, Heat treated and machined
Connect Type/ Flange Face Type Ring Type Joint (RTJ), Raised Face (RF),Large Male-Female (LMF), Flat Face (FF),Small Male-Female (SMF), Lap-Joint Face (LJF), Large Tongue & Groove, Small Tongue, Groove
Special design

As per your drawing

AS, ANSI, BS, DIN and JIS
15 NB (1/2") to 200 NB (8")
Equal and Reducing Configurations

Class 300 Threaded Flange, Socketweld Flange, Slip-On Flange, Blind Flange, Weld Neck Flange
Test Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector
Equipment Bending machine, Press machine, electric bevelling machine, Pushing Machine, Sand-blasting machine etc
Origin Indian / West Europe / Japan / USA / Korean
Specialized manufacturer of
  • DIN 2566 pn16
  • Rtj Flange
  • PN16 Flange
  • DIN 2566 pn10
  • DIN 2566 en 1092 1
  • Class 300 Blind Flanges
  • Class 300 Large Diameter Flange
  • Class 300 Table Flanges
  • Class 300 Sorf Flange
  • Class 300 Socketweld Flanges
  • Class 300 Threaded Flanges
  • Class 300 Weld Neck Flanges
  • Class 300 Slip-On Flanges
  • Class 300 Loose Flanges
  • Class 300 AS 4087 Water Flanges
  • Class 300 Lap Joint Flanges
  • Class 300 Plate Flanges
  • Class 300 Orifice Flanges
Class 300 Flanges Standard

ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.
BS Flange, EN Flange, API 6A Flange, ANSI Flange, ASME Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/ KS Flange, BS4504 Flange, GB Flange, AWWA C207 Flange, GOST Flange, PSI Flange

  • ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
  • AS 2129: Table D; Table E; Table H
  • B.S: BS4504 , BS3293, BS1560, BS10
  • ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
  • ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48
  • German (DIN)
  • American standard (ANSI)
  • Any other specilised flanges
  • British standard (BS)
  • The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203;UNI2276
  • DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638
Key markets and industries for Class 300 Flanges
  • Nuclear power (mostly seamless).
  • Heavy oil refineries.
  • Bitumen upgraders.
  • Petrochemicals and acids.
Export to Korea, Thailand, Iran, Dubai, Egypt, Ireland, Canada, USA, Indonesia, Spain, Singapore, India, Ukraine, Oman, Brazil, Peru, Saudi Arabia etc
Class 300 Flanges Application
  • To Connect Pipe & Tubes in Chemical, Petroleum, Power, Gas, Construction,Shipbuilding, Metallurgy etc
Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175

 

Rating In Bars
TEMP C°
300#
-29 / 38
51.1
50
50.1
100
46.6
150
45.1
200
43.8
250
41.9
300
39.8
325
38.7
350
37.6
375
36.4
400
34.7
425
28.8
450
23
475
17.4
500
11.8
538
5.9

 

300 Lb Flanges Pressure Rating

Rating Of Carbon Steel Flanges

The Table Shows The Maximum Pressure In PSI ASTM A105 / ASTM A350 LF2 / ASTM A350 LF3 / ASTM A350 LF6

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

 

ASME B16.5 300# Flange Dimensions
Class 300 Flange Dimensions
Normal
pipe
size
Outside
dia. of
flange
Minimum
thickness
of flange
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
Diam.
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

 

300 Lb Long Weld Neck Flange Dimensions, Check 300 Lb Ansi Flange Dimensions
Bolt Chart Of Class 300 Flange

Bolt And Stud Dimensions Chart - ASME B16.5 Flanges


300 LB. Flanges
# Bolts or Studs
Dia of Bolts or Studs
Length of Stud
1/16 RF
4
0.50
2-1/2
4
0.63
3
4
0.63
3
4
0.63
3-1/4
4
0.75
3-1/2
8
0.63
3-1/2
8
0.75
4
8
0.75
4-1/4
8
0.75
4-1/4
8
0.75
4-1/2
8
0.75
4-3/4
12
0.75
4-3/4
12
0.88
5-1/2
16
1.00
6-1/4
16
1.13
6-3/4
20
1.13
7
20
1.25
7-1/2
24
1.25
7-3/4
24
1.25
8
24
1.50
9

 

Distributors Of Class 300 Flange Material, Class 300 Flanges Manufacturers

Rating of Stainless Steel Flanges

Flanges Pressure Rating in Bars ANSI flanges (ASTM A182 F304L / ASTM A182 F316L)

TEMP C°
300#
-29 TO 38
41.4
50
40
100
34.8
150
31.4
200
29.2
250
27.5
300
26.1
325
25.5
350
25.1
375
24.8
400
24.3
425
23.9
450
23.4

 

Class 300 Copper Flange Dealers, View Carbon Steel 300 Lb Blind Flange Weight Chart, Check 300# Flange Dimensions MM

 

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