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Specification of Stainless Steel 304 Socket Weld Fittings
Dimension Specification ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
Thread NPT, BSPT, BSPP
Type DN15-DN1200
End Threaded, Welding, JIC
Pressure Rating Threaded end-2000lb/ 3000lb/ 6000lbs Pipe Fittings
Socket-weld end-3000/ 6000/ 9000lbs Pipe Fittings
Connection Welding
Bending Radius R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom Pipe Fittings
Size Range ½” NB to 24″ NB in Sch 10s, 40s, 80s, 160s, XXS. (DN6~DN100)
Manufacturing process Push, Press, Forge, Cast, etc.
Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc

Dimension of UNS S30400 SW Laterial Tee
NPS

Min Length

of Thread

Outside Dia

of Band

Min

WT
Center to End
B
J
D
G

90°

A

45°
C
1/2
10.9
13.6
33
3.18
28
22
3/4
12.7
13.9
38
3.18
33
25
1
14.7
17.3
46
3.68
38
28
1¼
17
18
56
3.89
44
33
1½
17.8
18.4
62
4.01
51
35
2
19
19.2
75
4.27
60
43
2½
23.6
28.9
92
5.61
76
52
3
25.9
30.5
109
5.99
86
64
4
27.7
33
146
6.55
106
79

Chemical Composition of WNR 1.4301 Socket weld Tee
Grade C Mn Si P S Cr Mo Ni N
304 min. – – – – – 18.0 – 8.0 –
max. 0.08 2.0 0.75 0.045 0.030 20.0 10.5 0.10

Mechanical Properties of SS 304 Coupling
Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
304 515 205 40 92 201

Physical Properties of 304 Stainless Steel Socketweld Elbow
Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (m/m/0C) Thermal Conductivity (W/m.K) Specific Heat 0-1000C (J/kg.K) Electrical Resistivity (n.m)
0-1000C 0-3150C 0-5380C at 1000C at 5000C
304 8000 193 17.2 17.8 18.4 16.2 21.5 500 720

Equivalent Grade of 304 SS Union
Grade UNS No Old British Euronorm Swedish SS Japanese JIS
BS En No Name
304 S30400 304S31 58E 1.4301 X5CrNi18-10 2332 SUS 304