Short Description

Model No.: F304-SBF-300-4

China Flange Manufacturer www.steeljrv.com supplies ANSI B16.48 ASTM A182 F304 Spectacle Blind Flange, 300 LB, 4 Inch.

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Key Specifications / Features

Type: Spectacle Blind Flange
Material: ASTM A182 F304
Size: 4 Inch (DN 100)
Pressure Class: 300 Lbs
Standard: ANSI B16.48
Surface Treatment: Without coating

Chemical Composition and Mechanical Property for 304

Steel Grade

Chemical Composition

Mechanical Performance

C(Max)

Si(Max)

Mn(Max)

P(Max)

S(Max)

Ni

Cr

N(Max)

Mo

Tensile Strength
(Min)

Yield Strength
(Min)

Mpa

Mpa

304

0.08

0.75

2.00

0.045

0.03

8.0–10.5

18.0–20.0

0.1

/

515

205

spectacle blind flange - ANSI B16.48 ASTM A182 F304 Spectacle Blind Flange 300 LB 4 Inch

Spectacle Blind Flanges Class 300

NPS Outside Ø
A
Inside Ø
B
Centerline
C
Thickness
t
Web Width
W
1/2 51 16 65 6.4 38
3/4 64 21 80 6.4 38
1 70 27 90 6.4 38
1.1/4 79 42 100 6.4 38
1.1/2 92 48 115 6.4 38
2 108 61 125 9.7 51
2.1/2 127 73 150 9.7 51
3 146 89 170 9.7 64
3.1/2 162 102 185 12.7 64
4 178 114 200 12.7 64
5 213 141 235 15.7 76
6 248 168 270 15.7 76
8 305 219 330 22.4 76
10 359 273 385 25.4 102
12 419 324 450 28.4 102
14 483 356 515 31.8 108
16 536 406 570 38.1 108
18 594 457 630 41.1 114
20 651 508 685 44.5 121
24 772 610 810 50.8 140
NPS Outside Ø
A
Inside Ø
B
Centerline
C
Thickness
t
Web Width
W

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