DIN 17175

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.

Standard	DIN17175
Definition	Steel 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.
Application	Seamless tubes of heat resistant steel
Specification	OD	21-914mm
	WT	SCH10,SCH20,SCH30,SCH40,SCH60,SCH80,SCH160,SCHXXS
	Length	3-12m or Customized
Pipe End	Plain End, Bevel End, Thread…
Pipe Surface	Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Manufacturing	The 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.
Grade	St35.8	St45.8	15Mo3	13CrMo44	10CrMo910	–	–	–
Chemical Composition %	Grade	C	Mn	P	S	Si	Cr	Mo
	St35.8	≤0.17	0.40-0.80	≤0.40	≤0.040	0.1-0.35	/	/
	St45.8	≤0.21	0.40-1.20	≤0.40	≤0.040	0.1-0.35	/	/
	15Mo3	0.12-0.20	0.04-0.80	≤0.030	≤0.030	0.10-0.35	–	0.25-0.35
	13CrMo44	0.10-0.18	0.04-0.70	≤0.030	≤0.030	0.10-0.35	0.70-1.10	0.44-0.65
	10CrMo910	0.08-0.15	0.04-0.70	≤0.030	≤0.030	≤0.50	2.00-2.50	0.90-1.20
	14MoV63	0.10-0.18	0.40-0.70	≤0.025	≤0.020	0.1-0.35	0.30-0.60	0.50-0.70
	12Cr1MoV	0.08-0.15	0.40-0.70	≤0.025	≤0.020	0.17-0.37	0.90-1.20	0.25-0.35
Mechanical Property	Grade	Tensile Strength(Mpa)		Yield Strength(Mpa)			Elongation(%)
	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
	14MoV63	460-610		≥310			≥18
	12Cr1MoV	690-840		≥490			≥14
Tolerance	Out diameter	Hot roll steel pipe		OD ≤ 100mm			± 0.75%( Min ± 0.5mm )
				OD＞ 100~ 320mm			± 0.9%
		Cold drawn steel pipe		OD ≤ 120mm			± 0.6%( Min ± 0.25mm )
	Wall Thickness	OD≤130mm		WT ≤ 2Sn			+15%~-10%
				WT ＞ 2Sn~4Sn			+12.5%~-10%
				WT ＞ 4Sn			± 9%
		130＜OD≤320mm		WT ≤ 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

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 Diameter	Tube Thickness （mm）
mm	1.6	1.8	2.0	2.3	2.6	2.9	3.2	3.6	4.0	4.5	5.0	5.6	6.3	7.1	8.0	8.8	10.0	11.0	12.5	14.2
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 Grade		Chemical composition in weight %
Steel Grade		C	Si	Mn	P	S	Cr	Mo	Ni	V
Code number	Material numbers	–	–	–	max.	max.	–	–	–	–
St 35.8	1.0305	≤0.17	0.10 to 0.35	0.40 to 0.80	0.040	0.040	–	–	–	–
St 45.8	1.0405	≤0.21	0.10 to 0.35	0.40 to 1.20	0.040	0.040	–	–	–	–
17 Mn 4	1.0481	0.14 to 0.20	0.20 to 0.40	0.90 to 1.20	0.040	0.040	≤0.30	–	–	–
19 Mn 5	1.0482	0.17 to 0.22	0.30 to 0.60	1.00 to 1.30	0.040	0.040	≤0.30	–	–	–
15 Mo 3	1.5415	0.12 to 0.20	0.10 to 0.35	0.40 to 0.80	0.035	0.035	–	0.25 to 0.35	–	–
13 CrMp 4 4	1.7335	0.10 to 0.18	0.10 to 0.35	0.40 to 0.70	0.035	0.035	0.70 to 1.10	0.45 to 0.65	–	–
10 CrMo9 10	1.7380	0.08 to 0.15	≤0.50	0.40 to 0.70	0.035	0.035	2.00 to 2.50	0.90 to 1.20	–	–
14 MoV 6 3	1.7715	0.10 to 0.18	0.10 to 0.35	0.40 to 0.70	0.035	0.035	0.30 to 0.60	0.50 to 0.70	–	0.22 to 0.32
X 20 CrMoV 12 1	1.4922	0.17 to 0.23	≤0.50	≤1.00	0.030	0.030	10.00 to 12.50	0.80 to 1.20	0.30 to 0.80	0.25 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 Grade		Tensile Strength	Yield point for wall thickness in mm			Elongation at fracture		Impact Strength
Steel Grade		Tensile Strength	≤16	＞16≤40	＞40≤60	Long	Transv.	transverse
Code number	Material numbers	N/mm2	N/mm2 minimum			% minimum		J minimum
St 35.8	1.0305	360 to 480	235	225	215	25	23	34
St 45.8	1.0405	410 to 530	255	245	235	21	19	27
17 Mn 4	1.0481	460 to 580	270	270	260	23	21	34
19 Mn 5	1.0482	510 to 610	310	310	300	19	17	34
15 Mo 3	1.5415	450 to 600	270	270	260	22	20	34
13 CrMp 4 4	1.7335	440 to 590	290	290	280	22	20	34
10 CrMo9 10	1.7380	450 to 600	280	280	270	20	18	34
14 MoV 6 3	1.7715	460 to 610	320	320	310	20	18	41
X 20 CrMoV 12 1	1.4922	690 to 840	490	490	490	17	14	34

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.