Carbon steel(10#、20#、A3、Q235A、20G、16Mn、ASTM A234、ASTM A105、ASTM A403);
 
Austenitic stainless steel(1Cr18Ni9Ti、0Cr18Ni9、00Cr19Ni10、0Cr17Ni12Mo2Ti、00Cr17Ni14Mo2、304 304L、316、316L);
 Alloy steel(16MnR、Cr5Mo、12Cr1MoV、10CrMo910、15CrMo、12Cr2Mo1、A335P22、St45.8/Ⅲ、 A10bB)

            Welding Pipe Fittings Series - Cap(GB 12459、GB/T 13401)
Nominal Pipe Size DN
Bottom OD
Full length
Limited thickness on size E
Series A Series B E E1
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
273.0
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
508.0
529
229
254
12.7
550
559
-
254 -
600
610
630
267 -
650
660
-
267 -
700
711
720
267 -
750
762
-
267 -
800
813
820
267 -
850
864
-
267 -
900
914
920
267 -
950
965
-
305 -
1000
1016
1020
305 -
1050
1067
-
305 -
1100
1118
1120
343 -
1150
1168
-
343 -
1200
1220
1220
343 -


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