DIN 17175 Seamless Steel Boiler Tubes

DIN 17175: Seamless Steel Tubes for Elevated Temperatures

Standard: DIN 17175
We can supply various grades of seamless boiler pipes, such as St35.8, St45.8, 15Mo3, 13CrMo44, 10CrMo910, etc.


DIN 17175 seamless boiler tube is widely used in boiler industry, petroleum, chemical industry, chemical fiber, metallurgy, medicine, machinery, paper, heat preservation, refrigeration, mechanical equipment, food, electricity, water, construction, aviation, aerospace, marine, shipbuilding, environmental protection and boiler heat exchangers.
This seamless boiler pipe likewise used for producing storage tanks of heat-resistant steels used in boiler-making and tool-making industries, and for constructing pressure reservoirs.
The seamless steel boiler tube is specially used as heating surface pipe in low and medium pressure boilers (The working pressure is not higher than 5.88 Mpa and the significant temperature is below 450ā„ƒ.).

This seamless boiler pipe can also be used as heating surface pipe, economizer, superheater, reheater and petrochemical industrial pipe for high-pressure boilers (The working pressure is above hunting for.8 Mpa in general and the working temperature is between 450ā„ƒ to 650ā„ƒ. ).

Size RangeThe size range of JST seamless steel boiler tube is as follows:

Outer dimension is from 6.0 mm to 219.0 mm.
Wall thickness of DIN 17175 seamless boiler pipe ranges from 1 mm to 30 mm.
The maximum length is 12 m.

Competitive Advantages of DIN 17175 Boiler Tube

JST configures multiple inspection equipment and professional inspection personnel in which have received rigorous pre-service inspection technician work outs. Only when they pass the appropriate examinations and obtain the corresponding qualification certificates, they can inspect seamless boiler tubes. We also conduct regular technical training to all of them master the international advanced boiler tube inspection methods.
Your production process is corresponding with PDCA circular comprehensive quality management system. We strictly control the production process and realize real-time monitoring of seamless boiler water pipes.
JST does heat ringing in the ears boiler tubes relating with the standard requirements. This treatment results in no oxidation layer at first glance. We also finish off kinds of inspections according to customers' requirements, such as eddy current inspection, magnetic particle testing, magnetic flux leakage testing, ultrasonic joint inspection and other inspections, in order to ensure stable performance of seamless boiler pipes. Our company also provides relevant inspection reports of boiler tubes.
Determined by customers' needs, JST can also provide other sizes an additional grades of seamless boiler pipes.

Delivery ConditionWe deliver our seamless boiler pipes in the next conditions, such as hot rolled, cold worked, annealed, normalized and stress released states.

Parameters of DIN 17175 Seamless Steel Boiler Tubes

1. Chemical Composition

Standard Grade Chemical Composition Limits (%)
C Si Mn P态S Cr Mo
DIN 17175 St35.8 ≤ 0.17 0.10-0.35 0.40-0.80 ≤ 0.030 / /
St45.8 ≤ 0.21 0.10-0.35 0.40-1.20 ≤ 0.030 / /
15Mo3 0.12-0.20 0.10-0.35 0.40-0.80 ≤ 0.030 / 0.25-0.35
13CrMo44 0.10-0.18 0.10-0.35 0.40-0.70 ≤ 0.030 0.70-1.10 0.45-0.65
10CrMo910 0.08-0.15 ≤ 0.50 0.40-0.70 ≤ 0.030 2.00-2.50 0.90-1.20

2. Mechanical Properties of Seamless Boiler Pipe

Standard Grade Tensile Strength (MPa) Yield Strength (MPa) Elongation (%)
DIN 17175 St35.8 360-480 ≥ 235 ≥ 25
St45.8 410-530 ≥ 255 ≥ 21
15Mo3 450-600 ≥ 270 ≥ 20
13CrMo44 440-590 ≥ 290 ≥ 20
10CrMo910 450-600 ≥ 280 ≥ 18


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