DIN 17175 Carbon Steel Smls Pipe St35.8, St45.8 for Chemical Products

• Customization: Available
• Application: Cast Iron, Chemical Processing, Construction, Oil and Gas, Water Supply, Building Material
• Pipe Diameter: 1/8"-5"
• Model NO.: St35.8, St45.8 DIN 17175 Carbon Steel SMLS Pipe
• Pipe Length: Max 50m
• Surface Finish: Black
• Steel Grade: St35.8, St45.8
• Material: Carbon Steel/Stainless Steel
• Shape: Round/Customized
• Process: Hot Rolled/Cold Drawn
• Tolerance: ±5%
• End: Plain End/Bevel End
• Usage: Heat Transfer
• Test: BV, SGS Is Available
• Stock: Size Can Customized
• Processing: Customized
• Thickness: 1-150mm
• Used: Factory, Decoration, Food
• Packing: Standard Export Packing
• Delivery Time: 10-30 Working Days
• Size: 1/4"-4"
• Transport Package: Woven Bag/Wooden Case
• Specification: SCH 5S-SCH160
• Trademark: EZS
• Origin: China
• Production Capacity: 10000 Ton/Year

Product Description

Product Description

 

1. Product Specifications

Specification Items	St35.8	St45.8
Standard	DIN 17175	DIN 17175
Material Grade	St35.8 (equivalent to ASTM A106 Grade B in some aspects)	St45.8 (similar to higher - strength carbon steel grades)
Manufacturing Process	Seamless (SMLS - Seamless Mild Longitudinal Welded, here it means seamless)	Seamless
Typical Outer Diameter Range	Usually from 10.2mm to 610mm, depending on production and market demands	Similar to St35.8, but may have more availability in larger diameters for applications requiring higher strength
Wall Thickness Range	Generally from 1.2mm to 40mm, designed to meet different pressure and application requirements	Slightly thicker wall options may be more common compared to St35.8 to withstand higher loads, with a range typically from 1.5mm to 45mm
Yield Strength	Approximately 235 - 265 MPa	Higher, around 280 - 315 MPa
Tensile Strength	410 - 530 MPa	510 - 650 MPa

2. Material and Standard Explanation

Material Grade

• St35.8: This is a carbon steel grade with a relatively good balance of mechanical properties. The "St" indicates "Stahl" (German for steel). The number "35.8" is related to its chemical composition and mechanical performance characteristics. It contains a certain amount of carbon, usually around 0.12 - 0.20%, which gives it moderate strength and formability. It is suitable for applications where the requirements for strength are not extremely high, such as in some low - pressure fluid transportation systems.

• St45.8: With a higher carbon content, typically around 0.17 - 0.25%, St45.8 offers higher strength compared to St35.8. The increase in carbon content contributes to its improved tensile and yield strength, making it more suitable for applications that demand higher load - bearing capacity, like in some high - pressure pipelines in the power generation and petrochemical industries.

Standard (DIN 17175)

DIN 17175 is a German standard for seamless steel tubes for pressure purposes. It specifies requirements regarding the chemical composition, mechanical properties, manufacturing process, and inspection methods of the steel pipes. Pipes conforming to this standard are designed to be used in systems where they will be subjected to internal pressure, ensuring safety and reliability in applications such as steam pipelines, oil and gas transportation pipelines, and water supply systems under pressure.

3. Application Areas

St35.8

• Low - Pressure Water Supply: Due to its moderate strength and corrosion resistance (with proper protection), it can be used in domestic and industrial low - pressure water supply pipelines. For example, in a factory's non - critical water circulation system where the pressure is relatively low.

• Heating Systems: In some heating systems with relatively low operating pressures, St35.8 pipes can be used to transport hot water. The material's ability to withstand the temperature and pressure conditions of the heating medium makes it a suitable choice.

St45.8

• Power Generation Industry: In power plants, it can be used for high - pressure steam pipelines. The high - temperature and high - pressure steam generated in boilers need to be transported through pipes with sufficient strength, and St45.8 meets these requirements.

• Petrochemical Industry: For the transportation of oil, gas, and various chemical media under high - pressure conditions, St45.8 pipes are often selected. Their high strength can resist the internal pressure exerted by the transported media and ensure the safe operation of the pipeline system.

4. Market and Competition

In the global market, St35.8 and St45.8 DIN 17175 carbon steel seamless pipes face competition from similar products of other standards, such as ASTM A106 pipes in the United States. However, their advantage lies in the well - established reputation of the DIN standard in Europe and some international markets where German engineering standards are highly regarded. The cost - effectiveness of these pipes, especially St35.8 for applications with lower - strength requirements, also makes them competitive. For St45.8, its high - strength performance in a cost - effective manner compared to some high - alloy steel pipes in specific applications gives it a competitive edge in the high - pressure pipeline market segment.

 

 

 

 

 

 

 

Detailed Photos

 

 

 

Processing of Production