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Pipe End Cap

Butt Weld Cap

Standard

ASTM A234, MSS SP-75, ASTM A403

Manufacturing Standard

ASME B16.9, DIN2615, JIS B2312

Size Range

1/2” to 48”. (DN15-DN1200)

Thickness

SCH 10, SCH 40, SCH 80

Surface Coatings

Black Painted, Varnished, Epoxy Coated, Galvanized

Socket Weld Cap (and Threaded Cap)

Standard

ASTM A105, ASTM A182

Manufacturing Standard

ASME B16.11

Dimensions

1/2” and up to 4”

Pressure Ratings

2000#, 3000#, 6000#, 9000#


Steel Pipe Cap is also called Steel Plug, it usually welded to the pipe end or mounted on the external thread of the pipe end to cover the pipe fittings. To close the pipeline so the function is the same as the pipe plug.

BW Steel Cap

BW steel pipe cap is the butt weld type of fittings, connecting methods is to use butt welding. So BW cap ends in beveled or plain.

Socket Weld Steel Pipe Cap

Socket weld cap is to connecting pipes and caps by insert the pipe into the access shoulder area of the socket weld cap.

 

Pipe Cap Material Grades

Stainless Steel Pipe Cap

ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L

Carbon Steel Pipe Cap

ASTM A 234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70.

Low Temperature Carbon Steel Pipe Cap

ASTM A420 WPL3, A420 WPL6

Alloy Steel Pipe Cap

ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91

Duplex Pipe Cap

ASTM A 815, ASME SA 815 UNS NO S31803, S32205. Werkstoff No. 1.4462

Nickel Alloy Pipe Cap

ASTM / ASME SB 336 UNS 2200 ( NICKEL 200 ), UNS 2201 (NICKEL 201 ), UNS 4400 (MONEL 400 ), UNS 8020 ( ALLOY 20 / 20 CB 3, UNS 8825 INCONEL (825), UNS 6600 (INCONEL 600 ), UNS 6601 ( INCONEL 601 ), UNS 6625 (INCONEL 625), UNS 10276 ( HASTELLOY C 276 )

 

Buttweld Cap

DN

NPS

OD

E

E1

15

1/2

21.3

25

25

20

3/4

26.7

25

25

25

1

33.4

38

38

32

1 1/4

42.2

38

38

40

1 1/2

48.3

38

38

50

2

60.3

38

44

65

2 1/2

73

38

51

80

3

88.9

51

64

90

3 1/2

101.6

64

76

100

4

114.3

64

76

125

5

141.3

76

89

150

6

168.3

89

102

200

8

219.1

102

127

250

10

273

127

152

300

12

323.9

152

178

350

14

355.6

165

191

400

16

406.4

178

203

450

18

457

203

229

500

20

508

229

254

550

22

558.8

254

254

600

24

609.6

267

305

650

26

660.4

267

700

28

711.2

267

750

30

762

267

800

32

812.8

267

850

34

863.6

267

900

36

914.4

267

950

38

965.2

305

1000

40

1016

305

1050

42

1066.8

305

1100

44

1117.8

343

1150

46

1168.4

343

1200

48

1219.2

343

socket weld cap

DN

NPS

B

C

J

K

3000

6000

9000

3000

6000

9000

ave

min

ave

min

ave

min

6

1/8

10.9

3.18

3.18

3.96

3.43

9.5

4.8

6.4

8

1/4

14.3

3.78

3.3

4.6

4.01

9.5

4.8

6.4

10

3/8

17.7

4.01

3.5

5.03

4.37

9.5

4.8

6.4

15

1/2

21.9

4.67

4.09

5.97

5.18

9.53

8.18

9.5

6.4

7.9

11.2

20

3/4

27.3

4.9

4.27

6.96

6.04

9.78

8.56

12.5

6.4

7.9

12.7

25

1

34

5.69

4.98

7.92

6.93

11.38

9.96

12.5

9.6

11.2

14.2

32

1 1/4

42.8

6.07

5.28

7.92

6.93

12.14

10.62

12.5

9.6

11.2

14.2

40

1 1/2

48.9

6.35

5.54

8.92

7.8

12.7

11.12

12.5

11.2

12.7

15.7

50

2

61.2

6.93

6.04

10.92

9.5

13.84

12.12

16

12.7

15.7

19

65

2 1/2

73.9

8.76

7.62

16

15.7

19

80

3

89.9

9.52

8.3

16

19

22.4

100

4

115.5

10.69

9.35

19

22.4

28.4

Threaded Cap

DN

NPS

P

D

G

L5

L2

3000

6000

3000

6000

3000

6000

6

1/8

19

16

22

4.8

6.4

6.7

8

1/4

25

27

19

25

4.8

6.4

8.1

10.2

10

3/8

25

27

22

32

4.8

6.4

9.1

10.4

15

1/2

32

33

28

38

6.4

7.9

10.9

13.6

20

3/4

37

38

35

44

6.4

7.9

12.7

13.9

25

1

41

43

44

57

9.7

11.2

14.7

17.3

32

1 1/4

44

46

57

64

9.7

11.2

17

18

40

1 1/2

44

48

64

76

11.2

12.7

17.8

18.4

50

2

48

51

76

92

12.7

15.7

19

19.2

65

2 1/2

60

64

92

108

15.7

19

23.6

28.9

80

3

65

68

108

127

19

22.4

25.9

30.5

100

4

68

75

140

159

22.4

28.4

27.7

33