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4.5.5.5 ELBOWS (STATE STANDARD 8946-75 )
Figure 4.30 – Conventional drawings of an elbow
Table 4.16
Nominal Thread L, l , D 1, D 2, b, R 1, R 2, R 3, R 4, S,
bore, Dy, G, inch mm mm mm mm mm mm mm mm mm mm
mm
10 3/8 25 10.0 24 22 2.0 4 6.5 23.5 26 2.5
15 1/2 28 12.0 28,6 26,6 2.0 2,7 5,5 26,5 29,3 2.8
20 3/4 33 13.5 34,9 32,4 2.5 3.3 6,3 32,8 35,7 3.0
25 1 38 15.0 42,1 39,6 2.5 3.2 6,5 39,5 42,8 3.3
32 1 45 17.0 52 49 3.0 3,4 7 49 52,6 3.6
40 1 50 19.0 59 56 3.0 3 7 55 60,5 4.0
50 2 58 21.0 70,5 67 3.5 2,5 7 67 71,5 4.5
The example of the conventional denotation of an elbow with the nominal bore 20 mm:
Elbow 20 State Standard 8946-75.
4.5.5.6 TEES (STATE STANDARD 8948-75)
Figure 4.31 – Conventional drawings of a tee
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