CLASS 300
INSIDE DIAMETER
OUTSIDE DIAMETER
CENTRE LINE SPACING
THICKNESS MIN
WEB WIDTH
ID
OD
A
T
B
16
51
67
6.4
38
21
64
83
6.4
38
27
70
89
6.4
38
42
79
99
6.4
38
48
92
114
6.4
38
61
108
127
9.7
51
73
127
149
9.7
51
89
146
168
9.7
64
102
162
184
12.7
64
114
178
200
12.7
64
141
213
235
15.8
76
168
248
270
15.8
76
219
305
330
22.4
76
273
359
387
25.4
102
324
419
451
28.5
102
356
483
515
31.8
108
406
537
572
38.1
108
457
594
629
41.2
114
508
651
686
44.5
121
610
772
813
50.8
140
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