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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.

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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