DIN 17175

DIN-17175-STEEL-PIPE

DIN 17175 Steel Pipe

DIN 17175 Seamless Steel Pipes are renowned for their ability to withstand high pressure, making them a valuable asset for various industries. Produced by the German Institute for Standardisation (DIN), these pipes are essential for boiler installations and tank construction. The DIN 17175 standard, issued by the Deutsches Institut für Normung e.V., ensures that these pipes are of the highest quality, suitable for high-temperature and high-pressure equipment.

DIN 17175 Specification

Our DIN 17175 pipes come with precise dimensions, ensuring a perfect fit for your requirements. They are manufactured using advanced production procedures, ensuring durability and reliability. The steel grades used adhere to the highest industry standards. Our pipes also come with various surface coatings, end types, joint methods, and offer machining services, ensuring you get a product tailored to your needs.

StandardDIN17175
DefinitionSteel possessing good mechanical properties even under long-time stressing at high temperature, up to 600℃, shall be regarded as being heat-resistant at
high temperatures, for the purpose of this standard.
ApplicationSeamless tubes of heat resistant steel
SpecificationOD21-914mm
WTSCH10,SCH20,SCH30,SCH40,SCH60,SCH80,SCH160,SCHXXS
Length3-12m or Customized
Pipe EndPlain End, Bevel End, Thread…
Pipe SurfaceOil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
ManufacturingThe steel pipe to which this standard relates may be produced by hot rolling, cold rolling, hot pressing, hot drawing or cold drawing.
The tube steel can be smelted in a flat furnace or an electric furnace according to the oxygen blowing method, and all steels should be cast in a static manner.
GradeSt35.8St45.815Mo313CrMo4410CrMo910
Chemical
Composition %
GradeCMnPSSiCrMo
St35.8≤0.170.40-0.80≤0.40≤0.0400.1-0.35//
St45.8≤0.210.40-1.20≤0.40≤0.0400.1-0.35//
15Mo30.12-0.200.04-0.80≤0.030≤0.0300.10-0.350.25-0.35
13CrMo440.10-0.180.04-0.70≤0.030≤0.0300.10-0.350.70-1.100.44-0.65
10CrMo9100.08-0.150.04-0.70≤0.030≤0.030≤0.502.00-2.500.90-1.20
14MoV630.10-0.180.40-0.70≤0.025≤0.0200.1-0.350.30-0.600.50-0.70
12Cr1MoV0.08-0.150.40-0.70≤0.025≤0.0200.17-0.370.90-1.200.25-0.35
Mechanical PropertyGradeTensile Strength(Mpa)Yield Strength(Mpa)Elongation(%)
St35.8360-480≥235≥25
St45.8410-530≥255≥21
15Mo3450-600≥270≥20
13CrMo44440-590≥290≥20
10CrMo910450-600≥280≥18
14MoV63460-610≥310≥18
12Cr1MoV690-840≥490≥14
ToleranceOut diameterHot roll steel pipeOD ≤ 100mm± 0.75%( Min ± 0.5mm )
OD> 100~ 320mm± 0.9%
Cold drawn steel pipeOD ≤ 120mm± 0.6%( Min ± 0.25mm )
Wall ThicknessOD≤130mmWT ≤ 2Sn+15%~-10%
WT > 2Sn~4Sn+12.5%~-10%
WT > 4Sn± 9%
130<OD≤320mmWT ≤ 0.05OD+17.5%~-12.5%
0.05OD < WT ≤ 0.11OD± 12.5%
WT > 0.11OD± 10%
Note: Sn–Normal wall thickness according DIN2448

DIN 17175 Dimension Table

schematic-diagram-of-pipe-dimension

The DIN 17175 pipes are available in a size range of 12.7mm to 114.3mm. These dimensions are meticulously maintained to ensure that the pipes fit perfectly in their intended applications, ensuring safety and efficiency.

Outside DiameterTube Thickness (mm)
mm1.61.82.02.32.62.93.23.64.04.55.05.66.37.18.08.810.011.012.514.2
10.2
13.5
16
17.2
19
20
21.3
25
25.4
26.9
30
31.8
33.7
38
42.4
44.5
48.3
51
54
57
60.3
63.5
70
73
76.1
82.5
88.9
101.6
108
114.3
127
133
139.7
152.4
159
168.3
177.8
193.7
219.1
244.5
273
323.9
355.6
406.4
457
508
559
610
660

Chemical Requirements of DIN 17175

Our pipes adhere to strict chemical compositions to ensure their durability and efficiency. The chemical composition includes Carbon (C), Silicon (Si), Manganese (Mn), Phosphorus (P), and Sulfur (S) among others, all maintained within the specified limits to ensure the best performance.

Steel GradeChemical composition in weight %
CSiMnPSCrMoNiV
Code numberMaterial
numbers
max.max.
St 35.81.0305≤0.170.10 to 0.350.40 to 0.800.0400.040
St 45.81.0405≤0.210.10 to 0.350.40 to 1.200.0400.040
17 Mn 41.04810.14 to 0.200.20 to 0.400.90 to 1.200.0400.040≤0.30
19 Mn 51.04820.17 to 0.220.30 to 0.601.00 to 1.300.0400.040≤0.30
15 Mo 31.54150.12 to 0.200.10 to 0.350.40 to 0.800.0350.0350.25 to 0.35
13 CrMp 4 41.73350.10 to 0.180.10 to 0.350.40 to 0.700.0350.0350.70 to 1.100.45 to 0.65
10 CrMo9 101.73800.08 to 0.15≤0.500.40 to 0.700.0350.0352.00 to 2.500.90 to 1.20
14 MoV 6 31.77150.10 to 0.180.10 to 0.350.40 to 0.700.0350.0350.30 to 0.600.50 to 0.700.22 to 0.32
X 20 CrMoV 12 11.49220.17 to 0.23≤0.50≤1.000.0300.03010.00 to 12.500.80 to 1.200.30 to 0.800.25 to 0.35

Mechanical Requirements of DIN 17175

The mechanical properties of our DIN 17175 pipes, such as tensile strength, yield strength, and elongation, are maintained at optimal levels to ensure that they can withstand the pressures of their intended applications.

Steel GradeTensile StrengthYield point for wall thickness in mmElongation at fractureImpact Strength
≤16>16≤40>40≤60LongTransv.transverse
Code numberMaterial numbersN/mm2N/mm2 minimum% minimumJ minimum
St 35.81.0305360 to 480235225215252334
St 45.81.0405410 to 530255245235211927
17 Mn 41.0481460 to 580270270260232134
19 Mn 51.0482510 to 610310310300191734
15 Mo 31.5415450 to 600270270260222034
13 CrMp 4 41.7335440 to 590290290280222034
10 CrMo9 101.7380450 to 600280280270201834
14 MoV 6 31.7715460 to 610320320310201841
X 20 CrMoV 12 11.4922690 to 840490490490171434

Steel Grades in DIN 17175

We offer various steel grades for our DIN 17175 pipes, including ST35.8, ST45.8, 15Mo3, 13CrMo44, and 10CrMo910. Each grade is designed to cater to different requirements, ensuring that you get the best product for your needs.

Our Advantages

  1. Over 25 years of experience in pipeline production and installation.
  2. Comprehensive inspection equipment.
  3. Independent product serial numbers for traceability.
  4. Advanced production equipment – Seamer high-frequency welding machine from the United States.
  5. Complete qualifications – API 5L/API 5CT/FM/UL fire pipe certification, etc.
  6. Wide range of products – independently developed solar torque tubes, highly favored in the European market.
  7. Customers spread across the globe.
  8. Excellent after-sales service and sense of responsibility.

Application Scenarios

Our steel pipes are engineered to withstand high temperatures, corrosive environments, and varying pressures, ensuring reliability and safety in the complex petrochemical processes. 

Whether it’s transferring crude oil, natural gas, or chemical intermediates, the robustness and versatility of steel pipes make them indispensable components of the plant’s infrastructure, contributing to efficient production and maintenance of stringent safety standards.

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