Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe

St35.8 Steel Pipe


This specification covers carbon steel pipe for high-temperature service. These pipes are suitable for welding and bending.

 
1.item:st35.8 1.0305 seamless steel fluid pipe and tube
2.This specification covers carbon steel pipe for high-temperature service.
3.These pipes are suitable for welding and bending.
4.high quality and competitive price
5.seamless steel pipe can be used widely in such industries as chemical industry, smelting, water
conservancy, electric power, for fluid and gas transport, structural machinery equipment Etc. 
Mechanical testing of the specimens shall include tensile, bending, flattening, hydrostatic
and nondestructive electric tests. Specimens undergoing bending tests shall consist of sections
cut from a pipe. For flattening tests, the specimens shall be smooth on the ends and burr-free,
except when made on crop ends. All tests shall be performed in room temperature. If any test
specimen shows flaws it can be discarded and substituted for another test specimen. Before testing,
if a specimen has scribe scratches, a retest shall be allowed. A retest shall also be allowed if a specimen breaks in an inside or outside surface flaw.
St35.8 Steel Pipe
 Scope:
This standard applies to seamless tubes including tubes for headers of heat-resistant
steels which are used in the construction of boilers, pipe-lines, pressure vessels and
equipment for service up to 600 centidegree and at simultaneous high pressures,
where the total stress and the relevant scaling condition can raise or lower the temperature limit.
Steel Grade:
 
Size (mm):
 
Outer Dimensions: 6.0mm ~ 219.0mm
Wall Thickness: 1.0mm ~ 30 mm
Length: max 12000mm
 
Steel grade: DIN17175(St35.8, St45.8, 15Mo3, 13CrMo44, 10CrMo910) 
Chemical Composition:%

Grade

C

Si

Mn

P

S

Cr

Mo

St35.8

≤0.17

0.10-0.35

0.40-0.80

≤0.040

≤0.040

/

/

St45.8

≤0.21

0.10-0.35

0.40-1.20

≤0.040

≤0.040

/

/

15Mo3

0.12-0.20

0.10-0.35

0.40-0.80

≤0.035

≤0.035

/

0.25-0.35

13CrMo44

0.10-0.18

0.10-0.35

0.40-0.70

≤0.035

≤0.035

0.70-1.10

0.46-0.65

10CrMo910

0.08-0.15

≤0.50

0.40-0.70

≤0.035

≤0.035

0.20-0.25

0.90-1.20

 

Mechanical Properties:

Grade

Yield Strength (Mpa)

Tensile Strength (Mpa)

Elongation(%)

St35.8

≥235

360-480

25

St45.8

≥255

410-530

21

15Mo3

≥275

450-600

20

13CrMo44

≥290

440-590

20

10CrMo910

≥280

450-600

18

 

 

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