GB12459、GB/T13401 Butt-welding Caps
|
Nominal
Pipe size
DN(in)
|
Outside diameter
at bevel
D
|
Length
|
Limiting wall thickness for length E
|
|
Series A
|
Series B
|
L
|
R
|
G
|
|
15
|
21.3
|
18
|
25
|
-
|
-
|
|
20
|
26.9
|
25
|
25
|
-
|
-
|
|
25
|
33.7
|
32
|
38
|
-
|
-
|
|
32
|
42.4
|
38
|
38
|
-
|
-
|
|
40
|
48.3
|
45
|
38
|
-
|
-
|
|
50
|
60.3
|
57
|
38
|
44
|
5.5
|
|
65
|
76.1(73)
|
76
|
38
|
51
|
7.0
|
|
80
|
88.9
|
89
|
51
|
64
|
7.6
|
|
90
|
101.6
|
-
|
64
|
76
|
8.1
|
|
100
|
114.3
|
108
|
64
|
76
|
8.6
|
|
125
|
139.7
|
133
|
76
|
89
|
9.5
|
|
150
|
168.3
|
159
|
89
|
102
|
11.0
|
|
200
|
219.1
|
219
|
102
|
127
|
12.7
|
|
250
|
273
|
273
|
127
|
152
|
12.7
|
|
300
|
323.9
|
325
|
152
|
178
|
12.7
|
|
350
|
355.6
|
377
|
165
|
191
|
12.7
|
|
400
|
406.4
|
426
|
178
|
203
|
12.7
|
|
450
|
457.2
|
478
|
203
|
229
|
12.7
|
|
500
|
508
|
529
|
229
|
254
|
12.7
|
Note:1).The DN600 pipe cap,when the wall thickness more than 13 mm,the E value changed to 305mm.
2).Does not use in the parenthesis as far as possible the value
3).The length of the pipe cap is not greater than the limit thickness for E,exceed the limit thickness of E1.
