MSS-SP43 (A) ASTM A815 UNS32750 GR2507 STUB END 250NB SCH40

MSS-SP43
(A) ASTM A815 UNS32750 GR2507 STUB END 250NB SCH40

分类:

ASTM A403 TP304L STUB END 314-015

Size: 2″ (DN50)

Thk: Sch25H

Material: 304L

China STUB END Manufacturer wilson pipeline  offers ASTM A403 TP304L STUB END 314-015, DN50, Sch25H.

Composition ranges for 304 grade stainless steel

Grade

C

Mn

Si

P

S

Cr

Mo

Ni

N

304

min.

max.

0.08

2.0

0.75

0.045

0.030

18.0

20.0

8.0

10.5

0.10

304L

min.

max.

0.030

2.0

0.75

0.045

0.030

18.0

20.0

8.0

12.0

0.10

304H

min.

max.

0.04

0.10

2.0

0.75

-0.045

0.030

18.0

20.0

8.0

10.5

Mechanical properties of 304 grade stainless steel

Grade

Tensile Strength (MPa) min

Yield Strength 0.2% Proof (MPa) min

Elongation (% in 50mm) min

Hardness

Rockwell B (HR B) max

Brinell (HB) max

304

515

205

40

92

201

304L

485

170

40

92

201

304H

515

205

40

92

201

304H also has a requirement for a grain size of ASTM No 7 or coarser.

Physical properties of 304 grade stainless steel in the annealed condition

Grade

Density (kg/m3)

Elastic Modulus (GPa)

Mean Coefficient of Thermal Expansion (μm/m/°C)

Thermal Conductivity (W/m.K)

Specific Heat 0-100°C (J/kg.K)

Electrical Resistivity (nΩ.m)

0-100°C

0-315°C

0-538°C

at 100°C

at 500°C

304/L/H

8000

193

17.2

17.8

18.4

16.2

21.5

500

720

Grade specifications for 304 grade stainless steel

Grade

UNS No

Old British

Euronorm

Swedish SS

Japanese JIS

BS

En

No

Name

304

S30400

304S31

58E

1.4301

X5CrNi18-10

2332

SUS 304

304L

S30403

304S11

1.4306

X2CrNi19-11

2352

SUS 304L

304H

S30409

304S51

1.4948

X6CrNi18-11

These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

Type 304L Stub End
Standard ASME B16.9, MSS SP-43, HG205099, HG20621,

GB/T12459-2005, GB/T13401, SH3408-96,etc.

Size 1/2″-48″(DN15-DN600)
Wall thickness SCH5S-SCH40S
Type Type A, Type B,Type C
Surface treatment Lathe finish&Abrasive blasting
Stainless steel 304, 304L,304H, 316, 316L,309S,310S, 321,321H,347H,316Ti
Duplex steel 2205, etc
Super duplex steel 2507, etc

STUB END

WP304L Stub End

What are they?

WP304L Stub Ends are fittings used in place of welded flanges where rotating back up flanges are desired.

They are also called Lap Joints and Vanstone Flared Laps.

How do they work?

A rotating back up flange seats itself against the back surface of the Stub End. When bolts are added, the clamping action of the bolts presses the rotating back up flange against the back of the Stub End. The gasket surface of the Stub End then presses against a gasket and another gasket surface providing joints like standard flange joints. The seal is made by the gasket surface of the stub end alone, the flange only provides the clamping pressure on the joint.

Why?

Since Stub Ends are made from material compatible with the designed piping system, back up flanges do not have to be made from the same material. The flange can be made from less expensive material because it never comes in contact with the process fluid.

WP304L Stub Ends’ Types
WP304L Stub Ends are typically manufactured by two methods. Type A & B Stub Ends are made similar to forged fittings such as Elbows and Flanges. Type C Stub Ends are made by forming pipe to the desired dimensions.
WP304L Stub Ends are available in two standard lengths, MSS and ANSI.
WP304L Stub Ends are normally provided with a standard weld bevel
WP304L Stub Ends dimensions are found on our fitting dimensions page.

Type “A” – Type “B” – Type “C” – Type “CS”

Where can we find the high quality ASTM A403 TP304L STUB END 314-015 DN50 Sch25H.

Dimensions butt welded Stub Ends schedule 10S MSS SP-43 type A/B

Stubend
NPS OD T G F R
Type A
R
Type B
1/2 21.3 2.11 34.9 50.8 3.05 0.76
3/4 26.7 2.11 42.9 50.8 3.05 0.76
1 33.4 2.77 50.8 50.8 3.05 0.76
1.1/4 42.2 2.77 63.5 50.8 4.83 0.76
1.1/2 48.3 2.77 73 50.8 6.35 0.76
2 60.3 2.77 92.1 63.5 7.87 0.76
2.1/2 73 3.05 104.8 63.5 7.87 0.76
3 88.9 3.05 127 63.5 9.65 0.76
3.1/2 101.6 3.05 139.7 76.2 9.65 0.76
Stubend
NPS OD T G F R
Type A
R
Type B
4 114.3 3.05 157.2 76.2 11.18 0.76
5 141.3 3.40 185.7 76.2 11.18 1.52
6 168.3 3.40 215.9 88.9 12.7 1.52
8 219.1 3.76 269.9 101.6 12.7 1.52
10 273.1 4.19 323.9 127 12.7 1.52
12 323.9 4.57 381 152.4 12.7 1.52
14 355.6 4.78 412.8 152.4 12.70 1.52
16 406.4 4.78 469.9 152.4 12.7 1.52
18 457.2 4.78 533.4 152.4 12.70 1.52
20 508 5.54 584.2 152.4 12.70 1.52
24 609.6 6.35 692.2 152.4 12.7 1.52

Dimensions are in millimeters unless otherwise indicated. Weights are in kilograms and approximately given.

Dimensional Tolerances of Stub Ends MSS SP-43

Nominal Pipe Size 1/2 up to 2.1/2 3 to 3.1/2 4 5 to 8 10 to 18 20 to 24
Outside Diameter at Welding End (OD) 0.8 0.8 0.8 + 1.6
– 0.8
+ 2.29
– 0.76
+ 3.05
– 0.76
Overall Length (F) 1.6 1.6 1.6 1.6 2 2
Outside Diameter of Lap (G) + 0
– 0.76
+ 0
– 0.76
+ 0
– 0.76
+ 0
– 0.76
+ 0
– 1.6
+ 0
– 1.6
Thickness of Lap (T) + 1.52
– 0
+ 1.52
– 0
+ 1.52
– 0
+ 1.52
– 0
+ 1.52
– 0
+ 1.52
– 0
Fillet Radius of Lap (R) + 0
– 0.76
+ 0
– 0.76
+ 0
– 1.6
+ 0
– 1.6
+ 0
– 1.6
+ 0
– 1.6
Wall Thickness (t) Not less than 87.5% of Nominal Wall Thickness

Dimensional tolerances are in millimeters unless otherwise indicated.

Notes..

  • Type A for Lap Joint Flanges
  • Type B for Slip On Flanges
  • MSS SP-43 only covers stainless steel buttweld fittings made for use with Schedule 5S and 10S pipe and Stub Ends suitable for use with Schedule 40S pipe, as defined in ASME B36.19. The dimensions and dimensional tolerances defined in MSS SP-43 are substantially the same as those in ASME B16.9 specifications from NPS 1/2 – NPS 24. Except with regard to the outside diameter at the bevel.