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Stub End

Size range

 1/2” to 36”

Type

 Long and short lap joint stub ends

Wall Thickness

Schedule 5s, 10s, 20s, Sch10, Sch20, Sch30, STD, Sch40 and etc.

Manufacturing standard

ASME/ANSI B16.9, ASME B16.28, MSS-SP-43

Material

Duplex, Carbon steel, Alloy steel, Cupro Nickel, Stainless steel


Stub ends are often installed in pairs and mated together with two lap joint flanges. The use of stub ends allows sections pipe to be opened for inspection, cleaning or replacement without the need for additional welding.


Material & Grades of Buttweld Long Stub End :

Stainless Steel Buttweld Long Stub End :

ASTM A403 WP316/316L, ASTM A403 SA / A 774 WP-S, WP-W, WP-WX 304/304L, ASTM A182 F316L, 304L, DIN

1.4301, DIN1.4306, DIN 1.4401, DIN 1.4404

 

Duplex & Super Duplex Steel Buttweld Long Stub End :

ASTM A 815, ASME SA 815 UNS NO S31803, S32205. UNS S32750, S32950. Werksto No. 1.4462

 

Carbon Steel Buttweld Long Stub End :

ASTM A234, ASME SA234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70.

 

Low Temperature Carbon Steel Buttweld Long Stub End : ASTM A420 WPL3, A420 WPL6

 

Alloy Steel Buttweld Long Stub End :

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

 

Nickel Alloy Buttweld Long Stub End :

ASTM B336, ASME SB336, Nickel 200 (UNS No. No2200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No.

N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel

600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No.

N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II), Cupro-Nickel 70/30, CuNi10Fe1Mn, CuNi30Mn1Fe.

 

Advantages of Stub ends :

  • Easy to prepare (does not require cut faces to be parallel or perfectly flat).

  • Can be formed between two dissimilar metals, such as aluminum and copper.

  • Accommodates different thicknesses (thinner piece must be welded on top).

  • Thin material such as diaphragms and foils can be joined.

stub-end-dimensions-300x281.png

NOMINAL PIPE SIZE

LAP DIAMETER

OUTSIDE DIAMETER

LONG PATTERN LENGTH

SHORT PATTERN LENGTH

RADIUS

Inch.

A

OD Min

OD Max

L

L

R

1/2

35

22.8

20.5

76

51

3

3/4

43

28.1

25.9

76

51

3

1

51

35

32.6

102

51

3

1 1/4

64

43.6

41.4

102

51

5

1 1/2

73

49.9

47.5

102

51

6

2

92

62.4

59.5

152

64

8

2 1/2

105

75.3

72.2

152

64

8

3

127

91.3

88.1

152

64

10

3 1/2

140

104

100.8

152

76

10

4

157

116.7

113.5

152

76

11

5

186

144.3

140.5

203

76

11

6

216

171.3

167.5

203

89

13

8

270

222.1

218.3

203

102

13

10

324

277.2

272.3

254

127

13

12

381

328

323.1

254

152

13

14

413

359.9

354.8

305

152

13

16

470

411

405.6

305

152

13

18

533

462

456

305

152

13

20

584

514

507

305

152

13

22

641

565

558

305

152

13

24

692

616

609

305

152

13

All Dimensions are in mm