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Butt-Welding Caps


Butt-Welding Caps
GB 12459、GB/T 13401、SH 3408、SH 3409、HG/T21635、SY/T 0510、ASME B16.9
Nominal Pipe Size

Length
Limiting Wall Thickness for Length E
DN
NPS
E
E1
15
20
25
1/2
3/4
1
25
25
38
25
25
38
4.57
3.81
4.57
32
40
50
11/4
11/2
2
38
38
38
38
38
44
4.82
5.08
5.59
65
80
90
21/2
3
31/2
38
51
64
51
64
76
7.11
7.62
8.13
100
125
150
4
5
6
65
76
89
76
89
102
8.64
9.65
10.92
200
250
300
8
10
12
102
127
152
127
152
178

12.7
12.7
12.7
350
400
14
16
165
178
191
203
12.7
12.7
450
500
500
18
20
22
203
229
254
229
254
254
12.7
12.7 
12.7
600
650
700
24
26
28
267
267
267
305
--
--
12.7
--
--
750
800
850
30
32
34
267
267
267
--
--
--
--
--
--
900
950
1000
36
38
40
267
305
305
--
--
--
--
--
--
1050
1100
1150
1200
42
44
46
48
305
343
343
343

--
--
--
--
--
--
--
--
 

 

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