S9074-AR-GIB-010/278
TABLE VII. Approved weld joint designs
Approved joint efficiences and notes 14/
Service classification
Joint identification numbers (MIL-STD-22)
B1V.1 B1V.2 B1V.3 B1V.5 B1V.6 B1V.7 B1S.2
B2V.1 B2V.3 B2S.1 B2U.1 B2U.2 B2U.3 B2U.4
B2U.5 B2J.1 B2J.2 B2J.3 B2J.4
C1V.5 C1V.6 C1V.7 C1V.8 C1V.9
C1V.12 C2V.1 C2V.2 C2V.3 C2V.4 C2V.5 C2V.6
C2J.1 C2J.2 C2J.3 C2J.4 C2J.5 C2J.6 C2U.1
C2S.1 C2S.2 T1V.1 T1V.2 T2V.1 T2V.2 T2J.1 T2J.2
Machinery class M
100 percent efficiency
B2(S)V.2 B2(S)V.4
C1V.10 C1V.11
80 percent efficiency
B1S.1 C1V.2 C1V.4 C1J.1 C1J.3 C1J.5 C1S.2 T1J.1 C1V.1 C1V.3 C1U.1 C1J.2 C1J.4 C1S.1 T1V.3
E1V.1 E1U.1 PT2S.1 PT2S.3 PT2V.2 PT2J.2 L1V.2 L1S.2 E1S.1 E1U.2 PT2S.2 PT2V.1 PT2J.1 L1V.1 L1S.1 L2S.1
2
Pressure vessel c l asses A-1. A-2. A-3. A-4. A-F. A-LT Pressure vessel classes A-3. A-4
B1V.1 B1V.2 B1V.3 B1V.5 B1V.6
B1V.7 B2V.1 B2V.3 B2U.1 B2U.2
B2U.3 B2U.4 B2U.5 B2J.1 B2J.2
B2J.3 B2J.4
C2V.2 C2V.5 C2V.6 C2U.1 C2J.4
C2J.5 C2J.6
P-70 P-71 P-72
V-9 V-11 V-12 V-27 V-28
100 percent efficiency
B2(S)V.2 B2(S)V.4 C2V.1
P-14 P-63 P-64
V-7 V-8
3, 4, 5, 6, 13
V-4 V-25 V-5 V-26 V-6
100 percent efficiency 3, 5, 6,
V-21 V-22
C2V.6 C2J.1 C2J.2 C2J.3 C2J.4
B2S.1 B2(S)V.2
C1V.8 C1V.9
C2V.1 C2V.2 C2V.3 C2V.4 C2V.5
C2J.5 C2J.6 C2S.1 C2S.2 C2U.1
T1V.1 T1V.2 T2V.1 T2V.2 T2J.1
T2J.2 PT2S.1
100 percent efficiency
Pressure vessel class A-4
C1V.5 C1V.6 C1V.7
C1V.10 C1V.11 C1V.12
V-23 V-24
3, 5, 6,
P-3 P-4 P-5 P-6 P-7
P-13 P-14 P-15 P-17 P-67
P-68 P-70 P-71 P-72 P-73
P-74 P-75 P-76 P-77
Piping class P-1, P-2, P-LT
7, 8, 10, 11
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