Stainless Steel Stub Ends

Stainless Steel Stub Ends

Stainless steel stub ends, also known as stainless steel lap joints and stainless steel flare laps, is a pipe fitting used in place of welded flanges where rotating back up flanges are desired.
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Product Details

Stainless steel stub ends, also known as stainless steel lap joints and stainless steel flare laps, is a pipe fitting used in place of welded flanges where rotating back up flanges are desired.

A rotating back up flange seats itself against the back surface of the stub end. The seal is made by the gasket surface of the stub end alone, the flange only provides the clamping pressure on the joint. There are two main types of stainless stub ends: seamless stainless steel stub end and welded stainless steel stub end.

Different production processes are adopted according to different types. We always use press forming to produce seamless stainless stub end and argon arc welding to form welded stainless stub end.

The size of stainless steel stub ends we manufacture ranges from DN15 to DN1200. This is just the start instead of the completion of our service when products are delivered to you.

We offer you most comprehensive after sales service and ensure best operational performance of our products. For metal, we are serious.

 

Stainless Steel Stub Ends

Size

OD: Seamless DN15-DN600; Welded DN15-DN1200;  WT:SCH5S-SCH160;

Process

Press forming, Argon Arc Welding

Surface

Aid Pickling, Polishing

 

Main Grades

Austenitic/Super Austenitic Stub Ends

304,  304H,  304L,  304LN,  321,  321H,  316,  316L,  316LN,  316Ti,  317L,  310S,  310H,  314,  347H,  904L,  S31254, N08367, N08926,  S32654,  S31277

Ferrite/Super Ferrite Stub Ends

405,  430,  439,  444,  TP446-1/TP446-2,  S44660,  S44735,  S44736

Duplex/Super Duplex Stub Ends

S31500,  S31803,  S32205,  S32304,  S32520, S32550,  S32750,  S32760

Martensite/Super Stub Ends  

410S,  410,  420,  420J2,  431,  17-4PH,  13Cr110,  17Cr110/125

Nickel Alloy Stub Ends

N04400, N05500, N06600, N06601, N06025, N06617, N06625, N06690, N08810, N10276, N06022, N10665, N10675, N08020, N08028, N08031, N06985, N06030, N06035, N07750

 

Production Standard

ASME

ASTM B16.9 ASME B16.9

MSS

MSS SP-43

HG

HG/T 21621, HG/T 205099

JIS

JIS2313

DIN

DIN2605 DIN2615 DIN2616 DIN2617

 

Tolerance in butt-welding fittings(ASTM/AISI B16.9、B16.28)


Specifications

 

Types

Nominal diameter

1/2-21/2

3-31/2

4

5-8

10-18

20-24

26-30

32-48

Outside Diameter

All Pipe Fittings

+1.52

±1.52

+2.29

+4.06

+6.35

-0.76

-

-1.52

-3.05

-4.83

Inside Diameter

All Pipe Fittings

±0.76

-

±3.05

±4.83

Wall Thickness

All Pipe Fittings

≥0.875*WT

Length

Stub Ends

±1.52

±2.29

±4.83

 

Parameter Table

Nominal Diameter

Outside Diameter

Length

Diameter of Lap Nominal&Maximum

R

DN

NPS

OD

LP

SP

G

A Max

B Max

15

1/2

21.3

76

51

35

3

0.75

20

3/4

26.7

76

51

43

3

0.75

25

1

33.4

102

51

51

3

0.75

32

1.1/4

42.4

102

51

64

5

0.75

40

1.1/2

48.3

102

51

73

6

0.75

50

2

60.3

152

64

92

8

0.75

65

2.1/2

73.0

152

64

105

8

0.75

80

3

88.9

152

64

127

10

0.75

90

3.1/2

101.6

152

76

140

10

0.75

100

4

114.3

152

76

157

11

0.75

125

5

141.3

203

76

186

11

1.5

150

6

168.3

203

89

216

13

1.5

200

8

219.1

203

102

270

13

1.5

250

10

273.1

254

127

324

13

1.5

300

12

323.9

254

152

381

13

1.5

350

14

355.6

305

152

413

13

1.5

400

16

406.4

305

152

470

13

1.5

450

18

457.2

305

152

533

13

1.5

500

20

508

305

152

584

13

1.5

550

22

559

305

152

641

13

1.5

600

24

610

305

152

692

13

1.5

 

Size Deviation

Nominal diameter

Butt end OD

WT

Stub OD

Corner radius

DN

NPS

15-40

1/2-11/2

(+/-)0.8

≥87.5%

+0

+0

-0.8

-0.8

50-90

2-31/2

(+/-)0.8

+0

+0

-0.8

-0.8

100

4

(+/-)0.8

+0

+0

-0.8

-0.8

125-200

5-8

+1.6

+0

+0

-0.8

-0.8

-0.8

250-450

10-18

+2.3

+0

+0

-0.8

-1.6

-1.6

500-600

20-24

+3

+0

+0

-0.8

-1.6

-1.6

 

Packing Information
Stainless steel stub end from Sheye Metal are packed and labeled according to the regulations and customer's requests. Great care is taken to avoid any damage which might be caused during storage or international transportation. In addition, clear labels are tagged on the outside of the packages for easy identification of the product I. D. and quality information.
A. Sheye Metal Export Standard Seaworthy Packing for this product.
Wooden Pallet, Plywood Case, Wooden Boxes.
B. Customization

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