A182 F316 Socket Weld Flange

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A182 F316 Socket Weld Flange,designed in accordance with ASME B16.5 standards, is a high-integrity flange used for creating a secure pipe connection in high-pressure systems. This flange type features a recessed area for the pipe to be inserted before being welded around its outer diameter, ensuring a robust, leak-proof joint.
Manufactured from durable materials such as forged carbon steel, stainless steel, or alloy steel, the socket weld flange offers excellent mechanical strength, corrosion resistance, and longevity under extreme operational conditions. This flange type is extensively used in applications across the oil and gas, chemical processing, and power generation industries.

Specification of ASME B16.5 Flange

Size Range 1/2″- 3″ / DN15 – DN80
Pressure Rating Class 150, 300, 600, 1500
Standard ANSI / ASME B16.5
Stainless Steel ASTM A182 F304 / 304L / 304H, 316 / 316L, 310S, 317, 347, 904L

Advantages of Socket Weld Flanges:

Stronger weld than slip-on flanges
Smooth bore flow, reducing turbulence
Ideal for small-diameter, high-pressure piping
Prevents leakage and provides structural stability

Dimension of A182 F316 Socket Weld Flange

There are many pressure levels for socket flanges, and the common pressure levels include 150#, 300#, 600#, 900#, 1500#, 2500#. The pressure level of the socket flange should be selected according to the working pressure, temperature, medium and other factors of the specific pipeline system to ensure the safety of the pipeline system.

NPS A B C D E K F G H I J W
inch No. of Holes inch kg/pc
mm mm
1/2 3.5 0.62 0.44 0.62 0.88 0.38 1.19 1.38 4 0.62 2.38 0.42
88.9 15.7 11.2 15.7 22.4 9.6 30.2 35.1 15.7 60.45
3/4 3.88 0.82 0.5 0.62 1.09 0.44 1.5 1.69 4 0.62 2.75 0.59
98.6 20.8 12.7 15.7 27.7 11.1 38.1 42.9 15.7 69.85
1 4.25 1.05 0.56 0.69 1.36 0.50 1.94 2.0 4 0.62 3.120 0.81
108 26.7 14.2 17.5 34.5 12.70 49.3 50.8 15.7 79.25
1-1/4 4.62 1.38 0.62 0.81 1.7 0.56 2.31 2.5 4 0.62 3.5 1.07
117.3 35.1 15.7 20.6 43.2 14.2 58.7 63.5 15.7 88.9
1-1/2 5.0 1.61 0.69 0.88 1.95 0.62 2.56 2.88 4 0.62 3.88 1.36
127 40.9 17.5 22.3 49.5 15.7 65.0 73.15 15.7 98.6
2 6.0 2.07 0.75 1.0 2.44 0.69 3.06 3.62 4 0.75 4.75 2.10
152.4 52.6 19.1 25.4 62.0 17.5 77.7 91.9 19.1 120.7
2-1/2 7.0 2.47 0.88 1.12 2.94 0.75 3.56 4.12 4 0.75 5.5 3.33
177.8 62.7 22.4 28.4 74.7 19.0 90.4 104.6 19.1 139.7
3 7.5 3.07 0.94 1.19 3.57 0.81 4.25 5.0 4 0.75 6.0 3.90
190.5 78.0 23.9 30.2 90.7 20.6 108. 127 19.1 152.4

ASTM A182 F316 Flanges Pressure Rating Table

   Table Il-2-2.2 Pressure-Temperature Ratings for Group 2.2 Materials
Nominal
Designation		 Forgings Castings Plates
16Cr-12Ni-2Mo A182 Gr.F316(1) A351 Gr.CF3M(2) A240 Gr.316(1)
Working Pressures by Classes,psig
Class
Temp.,F 150 300 400 600 900 1500 2500
-20 to 100 275 720 960 1440 2160 3600 6000
200 235 620 825 1240 1860 3095 5160
300 215 560 745 1120 1680 2795 4660
400 195 515 685 1.025 1540 2570 4280
500 170 480 635 955 1435 2390 3980
600 140 450 600 900 1355 2255 3760
650 125 440 590 885 1325 2210 3680
700 110 435 580 870 1305 2170 3620
750 95 425 570 855 1280 2135 3560
800 80 420 565 845 1265 2110 3520
850 65 420 555 835 1255 2090 3480
900 50 415 555 830 1245 2075 3460
950 35 385 515 775 1160 1930 3220
1000 20 365 485 725 1090 1820 3030
1050 360 480 720 1080 1800 3000
1100 305 405 610 915 1525 2545
1150 235 315 475 710 1185 1970
1200 185 245 370 555 925 1545
1250 145 195 295 440 735 1230
1300 115 155 235 350 585 970
1350 95 130 190 290 480 800
1400 75 100 150 225 380 630
1450 60 80 115 175 290 485
1500 40 55 85 125 205 345

Material of A182 F316 Flange

A182 F316 Socket Weld Flange Chemical Composition

CHEMICAL LIMITS C Mn P S Si Ni Cr Mo N
ASTM A182 F316 MIN 10.0 16.0 2.00
MAX 0.08 2.00 0.045 0.030 1.00 14.0 18.0 3.00 0.01

 A182 F316 Socket Weld Flange Mechanical Property

MATERIAL T.S (MPA) Y.S (MPA) EL % R/A %
ASTM A182 F316 515 min 205 min 30 min 50 min

A182 F316 Flange Physical Property

Physical properties of ASTM A182 F316 grade stainless steel and Copper Nickel in the annealed condition

Grade Density(kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (μm/m/°C) Thermal Conductivity (W/m.K) Specific Heat 0-100°C(J/kg.K) Electrical Resistivity (nΩ.m)
0-100°C 0-315°C 0-538°C at 100°C at 500°C
316/L/H 8000 193 15.9 16.2 17.5 16.3 21.5 500 740

 Applications of A182 F316 Socket Weld Flanges

Oil & Gas Industry – Offshore platforms, pipelines
Chemical & Petrochemical Plants – Corrosive fluid handling
Marine & Shipbuilding – Saltwater-resistant piping
Power Generation – High-pressure steam lines
Food & Beverage Industry – Hygienic process piping
Pharmaceuticals – Sterile and clean piping systems

 

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