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Cap

Size

1/2″~72 “

/Wall Thickness

2mm – 50mm / SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS

Manufacturing Standards


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

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

Materia


20#, 20G,Q235-A, ASTM A 234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70

16Mn, ASTM A420 WPL3, A420 WPL6

ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91, WB36, 12CrMo, 15Cr5Mo, 1Cr5Mo, 12Cr1MoV



Details

管帽(图1)

Nominal Pipe Size
(NPS)

Outside diameter at Bevel
D

Length(2)
E

Limiting wall Thickness for Length
E

Length(3)
E1

 1/2

21.3

25.4

4.6

25.4

 3/4

26.7

25.4

3.8

25.4

1

33.4

38.1

4.6

38.1

1-1/4

42.2

38.1

4.8

38.1

1-1/2

48.3

38.1

5.1

38.1

2

60.3

38.1

5.6

44.4

2-1/2

73.0

38.1

7.1

50.8

3

88.9

50.8

7.6

63.5

3-1/2

101.6

63.5

8.1

76.2

4

114.3

63.5

8.6

76.2

5

141.3

76.2

9.7

88.9

6

168.3

88.9

10.9

101.6

8

219.1

101.6

12.7

127.0

10

273.1

127.0

12.7

152.4

12

323.9

152.4

12.7

177.8

14

355.6

165.1

12.7

190.5

16

406.4

177.8

12.7

203.2

18

457.2

203.2

12.7

228.6

20

508.0

228.6

12.7

254.0

22

558.8

254.0

12.7

254.0

24

609.6

266.7

12.7

304.8

26

660.4

266.7



28

711.2

266.7



30

762.0

266.7



32

812.8

266.7



34

863.4

266.7



36

914.4

266.7



38

965.2

304.8



40

1016.0

304.8



42

1066.8

304.8



44

1117.6

342.9



46

1168.4

342.9



48

1219.2

342.9



Wall thickness for caps up to and including 36" conform to ANSI B36.10 specifications. Caps 38" and larger conform to XS specifications

 for wall thickness of 36". These are Wellgrow's standards as no intemationally recognized standards have been set for such large size wall thickness.
(1) The shape of these caps shall be ellipsoidal and shall conform to the shape requirements as given in the ASME boiler and pressure vessel code.
(2) Length E applies for thickness not exceeding that given in column“limiting wall thickness for length E”.
(3) Length E1 applies for thickness greater than given in column “limiting wall thickness” for NPS 24 and smaller.For NPS 26 and larger,length E1 shall

 be by agreement between manufacturer and purchaser.


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