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CCAS 2003/344


BS 3974 : PT 1 : 1974
Material: BS 4360
Gr 43a or equivalent.
Steel pipes

(*) Please note: Sizes M8 - M20 maybe thread rolled from effective diameter bar.
NOM PIPE
SIZE
PIPE
O.D.
DIA.'A'
(*)
'N'
'M'
'K'
'S'
MAX.
15
21.3
8
40
45
25
10
20
26.9
8
45
55
30
10
25
33.7
8
50
60
30
10
32
42.4
8
60
70
30
10
40
48.3
10
65
85
40
16
50
60.3
10
80
100
40
16
65
76.1
12
95
120
50
19
80
88.9
16
110
140
55
19
100
114.3
16
140
165
55
19
125
139.7
16
165
190
55
19
150
168.3
20
195
225
65
19
175
193.7
20
220
250
65
19
200
219.1
20
250
275
65
19
225
244.5
20
275
300
65
19
250
273.0
20
305
335
75
22
300
323.9
20
355
385
75
22
350
355.6
24
390
425
80
22
400
406.4
24
440
475
80
22
450
457.0
24
495
525
80
22
500
508.0
24
545
575
80
22
550
559.0
24
595
625
80
22
600
610.0
24
645
675
80
22