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  • SMLS Steel Pipe BS 3059-2
  • SMLS Steel Pipe BS 3059-2

SMLS Steel Pipe BS 3059-2

Seamless Steel Pipe, SMLS Steel Pipe, SMLS Steel Tube
Standard: British Standard BS 3059: Part 2 Steel boiler and superheater tubes
Uses: Specification for carbon,alloy and austenitic stainless steel tubes with specified elevated temperature properties.

Seamless Steel Pipe, SMLS Steel Pipe, SMLS Steel Tube:

Steel type and Type number: 

Steel type

Type number

Carbon

360

Carbon manganese

440

0.3%Molybdenum

243

1%Chromium,0.5%Molybdenum

620-460

2.25%Chromium, 1%Molybdenum(normalized and tempered)

622-490

9%Chromium,1%Molybdenum(annealed)

629-470

9%Chromium,1%Molybdenum(normalized and tempered)

629-590

12%Chromium,1%Molybdenum,vanadium

762


Chemical Composition(%): 


Grade

C

Si

Mn

P

S

Cr

Mo

Ni

Other

360

≤0.17

0.10~0.35

0.40~0.8

≤0.035

≤0.035

-

-

-

-

440

0.12~0.18

0.10~0.35

0.90~1.2

≤0.035

≤0.035

-

-

-

-

243

0.12~0.2

0.10~0.35

0.40~0.8

≤0.035

≤0.035

-

0.25~0.35

-

Al≤0.012

620-460

0.10~0.15

0.10~0.35

0.40~0.7

≤0.030

≤0.030

0.70~1.10

0.45~0.65

-

Al≤0.02

622-490

0.08~0.15

≤0.50

0.40~0.7

≤0.030

≤0.030

2.00~2.50

0.90~1.2

-

Al≤0.02

629-470

≤0.15

0.25~1

0.3~0.6

≤0.030

≤0.030

8~10

0.9~1.1

-

Al≤0.02

629-590

762

0.17~0.23

≤0.50

≤1.00

≤0.030

≤0.030

10.00~12.5

0.80~1.2

0.30~0.8

V 0.25~0.35



Mechanical Properties:


Grade

Tensile Strength (MPa)

Yield Strength (Mpa Min)

Elongation (% Min)

Flatten Coefficient

360

360~500

235

24

0.1

440

440~580

245

21

0.07

243

480~630

275

22

0.07

620~460

460~610

180

22

0.07

622~490

490~640

275

20

0.07

629~470

470~620

185

20

0.07

629~590

590~740

400

18

0.07

762

720~870

470

15

0.08


OD/mm WT/mm
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
21.3
26.7
33.4
48.3
60.3
73
88.9
114.3
168.3
219.1
273.1
323.3
355.6
406.4
457.2
508
609.6
660.4
711.2
762
Seamless Steel Pipe, SMLS Steel Pipe, SMLS Steel Tube

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