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Butt-Welding Cap

 

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Butt-Welding Cap

Pipe cap is a kind of Pipe fitting. It usually acts as a protective device designed to protect pipe ends of various pipes. The main use of pipe caps is to waterproof the connections. They can be fitted on water pump lines to remove air blocks, and also used in water supply lines, medical equipment, machinery, and processing equipment, and shipbuilding etc.

Materials 
Carbon steel Pipe Cap: ASTM/ASME A234 WPB-WPC 
Alloy steel: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP 911 
Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N 
ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti 
ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H 
Low temperature steel: ASTM/ASME A402 WPL 3-WPL 6 
High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70

Standards 
GB/T12459-2005 GB/T13401-2005 SH/T3408-1996 SH/T3409-1996 SY/T0609-2006 SY/T0518-2002 SY/T0510-1998 
DL/T695-1999 GD2000 GD87-1101 HG/T21635-1987 HG/T21631-1990 ASME B16.9-2007 ASME B16.25-2007
MSS SP 75-2008 MSS SP 43-2008 CSA Z245.11-05-2005 EN10253-1-1999 EN10253-2-2007 EN10253-3-2008 EN10253-4-2008
DIN2617-1991 BS1640-1-1962 BS1640-2-1962 BS1640-3-1968 BS1640-4-1968 BS1965-1-1963
GOST17379-2001 AFNOR NF A 49-289-1990 AFNOR NF A 49-170-1-1999 AFNOR NF A 49-170-2-2009 AFNOR NF A 49-170-3-2009 AFNOR NF A 49-170-4-2009 ISO3419-1981 ISO5251-1981 JIS B2311-2009 JIS B2312-2009 JIS B2313-2009

Nominal Diameter
Outside Diameter at Bevel

Back to End
Series A
Series B
E
 T E1
DN NPS
15
 1/2
21.3
18
25
 4.57 25
20
 3/4
26.9
25
25
 3.81 25
25
 1
33.7
32
38
 4.57 38
32
 1.1/4
42.4
38
38
 4.83 38
40
 1.1/2
48.3
45
38
 5.08 38
50
 2
60.3
57
38
 5.59 44
65
 2.1/2
76.1(73)
76
38
 7.11 51
80
 3
88.9
89
51
 7.62 64
90
 3.1/2
101.6
-
64
 8.13 76
100
 4
114.3
108
64
 8.64 76
125
 5
139.7
133
76
 9.65 89
150
 6
168.3
159
89
 10.92 102
200
 8
219.1
219
102
 12.70 127
250
 10
273.0
273
127
 12.70 152
300
 12
323.9
325
152
 12.70 178
350
 14
355.6
377
165
 12.70 191
400
 16
406.4
426
178
 12.70 203
450
 18
457.2
478
203
 12.70 229
500
 20
508.0
529
229
 12.70 254
550
 22
559
-

254

 12.70 254
600
 24
610
630

267

 12.70 305
650
 26
660
-
 267 - -
700
 28
711
720
  267　 - -
750
 30
762
-
  267　 - -
800
 32
813
820
 267 - -
850
 34
864
-
 267 - -
900
 36
914
920
 267 - -
950
 38
965
-
 305 - -
1000
 40
1016
1020
 305 - -
1050
 42
1067
-
 305 - -
1100
 44
1118
1120
 343 - -
1150
 46
1168
-
 343 - -
1200
 48
1220
1220
 343 - -

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