METAL HOSE

FLANGE DIMENSIONS AND PRESSURES

FLANGE and BOLT DIMENSIONS ASME/ANSI B16.5 

CLASS 150 DIMENSIONS

Nominal Pipe Size
NPS
(inches)		  
Diameter of
Flange
(inches)		 No.
of
Bolts		 Diameter of
Bolts
(inches)		 Diameter of
Bolt Holes
(inches)		 Bolt
Circle
(inches)
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

CLASS 300 DIMENSIONS

Nominal Pipe Size
NPS
(inches)		  
Diameter of
Flange
(inches)		 No.
of
Bolts		 Diameter of
Bolts
(inches)		 Diameter of
Bolt Holes
(inches)		 Bolt
Circle
(inches)
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

CARBON STEEL FLANGES – PRESSURE AND TEMPERATURE RATINGS – GROUP 1.1 ASME B16.5 AND MATERIAL ASTM A-105

Gage Pressure (psi)
Temperature
(oF)		 Flange Class
150 300 400 600 900 1500 2500
< 100 285 740 985 1480 2220 3705 6170
200 260 680 905 1360 2035 3395 5655
300 230 655 870 1310 1965 3270 5450
400 200 635 845 1265 1900 3170 5280
500 170 605 805 1205 1810 3015 5025
600 140 570 755 1135 1705 2840 4730
650 125 550 730 1100 1650 2745 4575
700 110 530 710 1060 1590 2655 4425
750 95 505 675 1015 1520 2535 4230
800 80 410 550 825 1235 2055 3430
850 65 320 425 640 955 1595 2655
900 50 230 305 460 690 1150 1915
950 35 135 185 275 410 685 1145
1000 20 85 115 170 255 430 715
               
Hydrostatic Test Pressure (psig) 450 1125 1500 2225 3350 5575 9275

FLANGES – PRESSURE AND TEMPERATURE RATINGS – BY MATERIALS

Pressure-Temperature Ratings for 150# Flange Materials
Working pressure by Materials, PSI
Pressure Class Service Temp °F Carbon Steel Cr-Mo SS 304 SS 316 SS 304L

SS 316L

 SS 321
150# 100 285 290 275 275 230 275
150# 200 260 260 235 240 195 235
150# 300 230 230 205 215 175 210
150# 400 200 200 180 195 160 190
150# 500 170 170 170 170 145 170
150# 600 140 140 140 140 140 140
150# 650 125 125 125 125 125 125
150# 700 110 110 110 110 110 110
150# 750 95 95 95 95 95 95
150# 800 80 80 80 80 80 80
150# 850 65 65 65 65 65 65
150# 900 50 50 50 50   50
150# 950 35 35 35 35   35
150# 1000 20 20 20 20   20