DIN 17175 Seamless Steel Tubes for High-Pressure Pipelines

• Type: Round
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Carbon Phosphorus Chromium Molybdenum
• Technique: Hot Rolled
• Shape: Round
• Surface Treatment: Polished
• Model NO.: DIN 17175 ST35.8, DIN 17175 ST45.8
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Petroleum, Chemical, Machinery
• Manufacturing Technique: Hot Rolling
• Alloy or Not: Alloy
• Spot Size: 6′′ to 30′′
• Custom Size: 32′′to 76′′
• Thickness: Sch 10 to Sch Xxs
• Length: Customization Cut Length
• Place of Origin: China
• Delivery Time: 8-14 Days
• Packing: Standard Sea-Worthy Packing
• Trade Terms: Fob CFR CIF
• Terms of Payment: 30%Ttadvance + 70% Balance
• Transport Package: Standard Ocean Cargo/Customer Requirements
• Specification: customization
• Origin: Liaocheng Shandong
• HS Code: 7304511001
• Production Capacity: 300000tons/Year

Product Description

   

Product Description

DIN 17175 is a German standard that specifies the technical delivery conditions for seamless carbon steel and alloy steel tubes used in elevated temperatures. These tubes are commonly used for applications such as boiler tubes, heat exchangers, and pipelines in high-temperature environments.

The DIN 17175 standard covers a wide range of seamless tubes, including those made from non-alloy and alloy steels. It specifies the dimensions, tolerances, mechanical properties, and testing requirements for these tubes.

The seamless steel tubes specified in DIN 17175 are manufactured by hot rolling or cold drawing processes. They are required to have a high-quality surface finish and uniform dimensional accuracy. The tubes can be heat treated to achieve specific mechanical properties, such as improved strength or impact resistance.

The DIN 17175 seamless steel tubes are commonly found in industries such as power generation, chemical processing, and petroleum refining, where high-temperature and high-pressure conditions are present. They are designed to withstand the demanding requirements of these applications and provide reliable performance.

Overall, DIN 17175 seamless steel tubes are widely used in various industries for their excellent heat resistance, corrosion resistance, and mechanical properties in elevated temperature environments.

Detailed Photos

  

 

 

Product Parameters

Chemical Compositions of DIN 17175

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 of DIN17175

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

Surface condition

The tube must have a manufacturing method that achieves a relatively smooth inner and outer surface, so that it is possible to use either a hot rolling method or a cold rolling method. Tubes should not have unacceptable cracks, creases and folds. As long as the wall thickness of the steel pipe does not exceed the allowable dimensional deviation, and does not affect the performance of the steel pipe, it is permissible to create some uneven and shallow longitudinal scratches during the manufacturing process. Mechanical machining (such as buffing) can be used to remove the slight subsidence of the surface, but not to reduce the minimum allowable wall thickness.

Heat treatment and processing

Reference data for heat treatment temperature
Hot working is possible from 1100 to 80 ° °C, and the temperature can be reduced to 750 °C during processing.
In the matching-correction work of the local department, attention should be paid to the effective specification of hot work; there should be a supervisory temperature system. In the higher temperature range, ie 1100 to 900 °C, it is suitable for forging and pier thickening, about 85 °C, and the temperature can be lowered to above 75 °C during the processing.
For example, before the last process, or during the same hot working process, if the heating temperature of the workpiece is above the normalizing temperature but not more than 1000 ° C, and the deformation process is above 75 ° C, or ---- In the last process, the degree of deformation does not exceed 5% - at the end of 7 00 °C, then the normalizing of the St35.8, St45.8, 17Mn4, 19Mn5, and 15Mo3 steels is superfluous. The 13CrMo44 and 10CrMo910 only need to be tempered.
For multiple times and/or long time heat treatments at temperatures around 1000 to 1000 °C, the workpiece should be cooled to around 350 °C before the last deformation process. If the normalizing or quenching and tempering treatment is more than enough, then the temperature at which the steel is hot-worked should not exceed 1 000 °C.
Conversely, if the molding end temperature is above 10 °C, then the St35.8, St45.8, 17Mn4, 19Mn5, and 15Mo3 steels must be normalized, while the 13CrMo44 and 10CrMo910 should be tempered.
14MoV63 and X20CrMoV121 steels should be reconditioned after hot work.

Pipes made of steel according to this standard may be cold-worked, such as pipe bending, flaring, drawing and pipe cutting; for X20CrMoV121 and 14CrV63 steels, the high yield point and tensile strength shall be noted. After bending, expanding, and cold drawing with normal deformation, there is no need to supplement the heat treatment.

 

Company Profile

Shandong Shanshui Special steel pipe Co.,LTD. Our company was founded in 2014, The headquarters is located in 14th floor, Rongfu Center, Huangshan Road, Liaocheng ,Shandong Province,China.
We specialized in the research and development,production,sales and application promotion of seamless steel pipe. We can provide customer-required Standard,Specification,Material,
Application of Carbon steel tube,Alloy steel tube and their machined products etc.    
We have ten years of industry experience, the annual output of the factory is 250,000 tons, non-standard steel tube, super thick wall steel tube, alloy steel tube, super long steel tube, fixed size steel tube are our production advantages.
 

We have perfect production equipment: 
· 50 production workshop        · 76 production workshop        · 90 production workshop 
· 60 Cold Rolling Resources Units(OD10-159mm,THK2-20mm)
Our factory can provide customers with product testing and steel tube machining services,
"OWN PRODUCTION & SALES" production mode, flexible to meet customer needs, for customers to save money.
Our factory's product quality is guaranteed, workshop production control is strict, coordination ability is strong, timely delivery. 
Excellent quality and perfect service are the premise and guarantee to create maximum value for customers!

Shandong Shanshui Special Steel Co., Ltd. is very honored to receive distinguished customers from Iran, Japan, India and other countries. They came to visit our company and were very satisfied with our workshop facilities and production environment.
We displayed advanced processing machinery and technical equipment, allowing customers to witness our production capacity and quality assurance system. Customers have highly appreciated our production workshops and expressed their recognition and trust in our company.
Customers have shown great interest in the quality and technical level of our products. In the warm reception at the same time, we reached an order contract with the customer. Through the signing of contracts, we have established a long-term and stable partnership with customers.
We sincerely thank foreign customers for their trust and support, at the same time we welcome friends from all over the world to visit the factory, we will be warm hospitality through our joint efforts to promote the smooth progress of cooperation, to achieve mutual benefit and win-win goals.

 

Certifications

 

FAQ

 

What kind of company is Shandong Shanshui Special Steel Co., LTD.?
Shandong Shanshui Special Steel Co., Ltd. is a reputable manufacturer and supplier of top-quality steel products in Shandong province, China. With our dedication to excellence, we specialize in producing a wide range of steel pipes including seamless, welded, and alloy steel pipes.

Our company is committed to providing customers with high-quality and reliable steel products. We have built a strong reputation both domestically and internationally for our consistent product quality and customer satisfaction.

Where is the factory of Shandong Shanshui Special Steel Co., LTD.?

Factory :Zhangshan Industrial Park, Guangping Township, Liaocheng City,Shandong
We have 50, 76, 90, a total of three large hot-rolled seamless steel pipe production lines, and there are 10 fine rolled seamless steel pipe production lines. Among them, the 90-line configuration of Assel limited mandrel rolling machine is the strongest three-roll rolling capacity in China, and with the two-roll sizing machine, it is the only production line that can produce ultra-thick wall specifications and ultra-long steel pipes. We can accept non-standard steel pipe, super thick wall alloy steel pipe, we produce and sell by ourselves, fast delivery, to provide efficient solutions for customers' steel needs.
How about our product quality and after-sales service?
My factory finishing rolling tube in Liaocheng first product quality assurance service, that is: product quality problems, our company can undertake replacement, return and other quality assurance services. Execution in the workshop: process card, work order, 2-hour quality inspection, entrance inspection, exit inspection, etc., to ensure that unqualified products do not produce and do not leave the factory.
What can you buy from us?

Shandong Shanshui Special Steel Co., Ltd. can provide various types of steel pipes, including but not limited to:

   1.Seamless steel pipes: Suitable for high temperature, high pressure, and special applications in industries such as petroleum,natural gas, chemical, and power.

   2.Welded steel pipes: Suitable for general industrial, construction, and structural purposes, such as buildings, bridges, and machinery manufacturing.

   3.Alloy steel pipes: Treated with alloy elements, these pipes have high strength, wear resistance, and corrosion resistance. They are widely used in industries such as petroleum, chemical, power, and aerospace.

   4.Oil pipes: Used for oilfield development and oil transportation, these pipes are resistant to high temperatures and corrosion.

   5.Gas pipes: Used for natural gas transportation, these pipes have high pressure and corrosion resistance.

   6.Hydraulic support pipes: Used in mining, construction, and mechanical equipment as hydraulic supports, these pipes have high strength and corrosion resistance.

In addition, we also provide customized steel pipe products. We can manufacture pipes with special specifications, materials, and processing requirements based on customer needs.