DIN 17175 is a standard specification for seamless tubes of heat-resistant steels used in elevated temperatures and high-pressure environments.

DIN 17175是高温高压环境中使用的耐热钢无缝管的标准规范。

It covers various grades of carbon and alloy steel tubes suitable for applications such as boilers, pipelines, and heat exchangers operating at elevated temperatures. The standard specifies the dimensions, technical conditions, and mechanical properties of these tubes, ensuring their suitability for specific industrial purposes.

它涵盖了适用于高温下运行的锅炉、管道和热交换器等应用的各种等级的碳和合金钢管。该标准规定了这些管子的尺寸、技术条件和机械性能，以确保其适用于特定的工业用途。

DIN 17175 standard applies to seamless steel pipes. These pipes can be used to manufacture steam boilers, pipes, pressure vessels and instruments operating at temperatures up to 600 ° C and at high temperatures. Due to the total load and special oxidation conditions, these pipes can be lowered or raised. High listed temperature limits.

DIN 17175标准适用于无缝钢管。这些管道可用于制造在高达600°C和高温下运行的蒸汽锅炉、管道、压力容器和仪器。由于总负载和特殊的氧化条件，这些管道可以降低或升高。列出的温度上限。

The standard was first published in 1959 and has been revised several times since then. It sets out the technical requirements for the manufacturing of seamless tubes of heat-resistant steels for elevated temperatures, including chemical composition, mechanical properties, dimensional tolerances, and testing methods, among others.

该标准于1959年首次发布，此后经过多次修订。它规定了高温耐热钢无缝管制造的技术要求，包括化学成分、机械性能、尺寸公差和测试方法等。

DIN 17175 applies to seamless tubes used in the construction of boilers, pipelines, and other pressure vessels that are exposed to high temperatures and pressures. The tubes are commonly used in various industries, including power generation, petrochemical, and chemical industries.

DIN 17175适用于用于制造锅炉、管道和其他暴露在高温高压下的压力容器的无缝管。这些管子通常用于各种行业，包括发电、石化和化学工业。

Overall, DIN 17175 is an important standard for seamless steel tubes used in high-pressure and high-temperature applications, providing technical specifications and quality requirements for heat-resistant steels used in boilers and heat exchangers.

总体而言，DIN 17175是高压和高温应用中使用的无缝钢管的重要标准，为锅炉和换热器中使用的耐热钢提供了技术规范和质量要求。

DIN 17175 seamless steel pipes are widely used in heat exchange appliances. DIN 17175 alloy steel pipe is just a big class,and it has many classifications.

DIN 17175无缝钢管广泛应用于热交换设备。DIN 17175合金钢管只是一个大类，它有很多分类。

What is DIN 17175 standard?  什么是DIN 17175标准？

The DIN 17175 standard is a technical specification developed by the Deutsches Institut für Normung (German Institute for Standardization) for seamless tubes made from heat-resistant steels. These tubes are intended for use in high-temperature and high-pressure environments, such as in boilers, pipelines, and heat exchangers. The standard outlines the requirements for dimensions, technical conditions, and mechanical properties of these tubes, ensuring their suitability and reliability in various industrial applications involving elevated temperatures.

DIN 17175标准是由德国标准化研究所（Deutsches Institut für Normung）为耐热钢制成的无缝管制定的技术规范。这些管子适用于高温高压环境，如锅炉、管道和热交换器。该标准概述了这些管子的尺寸、技术条件和机械性能的要求，以确保它们在涉及高温的各种工业应用中的适用性和可靠性。

DIN 17175 alloy steel pipe is just a big class,and it has many classifivations. We mainly produce DIN 17175 ST35.8,DIN 17175 ST45.8, and 10CrMo910 steel pipes. This alloy steel pipe is just a big class,and it has many classifivations.

We mainly produce DIN 17175 ST35.8, DIN 17175 ST45.8 and 10CrMo910 steel pipes.

DIN 17175合金钢管只是一个大类，它有很多分类。我们主要生产DIN 17175 ST35.8、DIN 17175 ST45.8和10CrMo910钢管。这种合金钢管只是一个大类，有很多分类。我们主要生产DIN 17175 ST35.8、DIN 17175 ST45.8和10CrMo910钢管。

Field of application应用领域

For high middle, low pressure boiler and pressure purpose用于高中低压锅炉和压力用途

Delivery Conditions交货条件

The tubes shall be supplied suitably heat treated over their entire length. The following heat treatment shall be used, depending on the type of steel:

管子应在其整个长度上进行适当的热处理。根据钢的类型，应使用以下热处理：

• Normalizing·
• Subcritical annealing
• Hardening and tempering with continuous cooling from the hardening temperature and subsequent tempering.
• Hardening and tempering with isothermal transformation.

What material is DIN 17175?  DIN 17175是什么材料？

DIN 17175 standard covers a range of materials known as heat-resistant steels, which are specifically designed to maintain their mechanical properties and structural integrity at elevated temperatures. These materials include various alloy and non-alloy steel grades, such as 15Mo3, 13CrMo44, 10CrMo910, and others.

DIN 17175标准涵盖了一系列被称为耐热钢的材料，这些材料是专门为在高温下保持其机械性能和结构完整性而设计的。这些材料包括各种合金和非合金钢牌号，如15Mo3、13CrMo44、10CrMo910等。

Chemical Compositions of DIN 17175  DIN 17175的化学成分

What is DIN 17175 ST 35.8 equivalent to ASTM?  DIN 17175 ST 35.8与ASTM的等效性是什么？

DIN 17175 ST 35.8 is equivalent to ASTM A179. 

DIN 17175 ST 35.8等同于ASTM A179。
Both standards specify seamless carbon steel tubes for heat-exchanger and condenser purposes. The materials have similar properties and are used in similar applications, especially in the context of high-temperature and heat-transfer environments.

这两个标准都规定了用于换热器和冷凝器的无缝碳钢管。这些材料具有相似的性能，并用于类似的应用，特别是在高温和传热环境中。

Mechanical Properties of DIN17175  DIN17175的机械性能

DIN 17175 equivalent ASTM   DIN 17175等同于ASTM

The DIN 17175 standard has various equivalents in ASTM standards for seamless tubes used in high-temperature and heat-exchanger applications. Here are a few examples:

DIN 17175标准在ASTM标准中有各种等效物，用于高温和热交换器应用中的无缝管。以下是一些示例：

1. DIN 17175 St35.8 is equivalent to ASTM A179.
2. DIN 17175 St45.8 is equivalent to ASTM A210.
3. DIN 17175 15Mo3 is equivalent to ASTM A335 P1.
4. DIN 17175 13CrMo44 is equivalent to ASTM A335 P12.
5. DIN 17175 10CrMo910 is equivalent to ASTM A335 P22.

Please note that these equivalences depend on the specific grade and intended application. It's recommended to refer to the specific material specifications for accurate equivalences.

请注意，这些等效性取决于具体等级和预期应用。建议参考具体的材料规格以获得准确的等效性。

St 35 material properties  St 35材料特性

The material St35, which is part of the DIN 17175 standard, refers to a low carbon steel used for seamless tubes in high-temperature and heat-exchanger applications. Here are some general material properties of St35:

材料St35是DIN 17175标准的一部分，是指用于高温和热交换器应用中无缝管的低碳钢。以下是St35的一些一般材料特性：

1. Chemical Composition:1.化学成分：
   • Carbon (C): 0.17% maximum
   • Silicon (Si): 0.10-0.35%
   • Manganese (Mn): 0.40-0.80%
   • Phosphorus (P): 0.040% maximum
   • Sulfur (S): 0.040% maximum
2. Mechanical Properties:2.机械性能：
   • Tensile Strength: 360-480 MPa (depending on tube diameter)
   • Yield Strength: 235 MPa minimum
   • Elongation: 25% minimum
   • Hardness: Not specified
3. Physical Properties:3物理性质：
   • Density: 7.85 g/cm³
   • Melting Point: Approximately 1420-1460°C (2590-2660°F)

It's important to note that the mechanical properties can vary based on factors such as heat treatment and manufacturing processes.

值得注意的是，机械性能可能因热处理和制造工艺等因素而异。

The same effective standards and reference materials相同的有效标准和参考物质

• DIN 2391, part 1 , cold drawn or cold rolled precision seamless steel: size.·DIN 2391，第1部分，冷拔或冷轧精密无缝钢：尺寸。
• DIN 2413, Steel tube: Wall thickness resistance to internal pressure.·DIN 2413，钢管：壁厚耐内压。
• DIN 2448, seamless steel pipe: size and weight.·DIN 2448，无缝钢管：尺寸和重量。
• DIN 2915, seamless and welded steel tubes for water tube boilers.·DIN 2915，水管锅炉用无缝和焊接钢管。
• DIN 2917 , Non-stitched steel tubes for hot steam pipes and headers : Dimensions·DIN 2917，热蒸汽管道和集管用非缝合钢管：尺寸
• DIN 17007 Part 2·DIN 17007第2部分
• DIN 50049, material test certificate·DIN 50049，材料测试证书
• DIN 50115, Metal Materials Experiment: Notch Impact Toughness Test·DIN 50115，金属材料实验：缺口冲击韧性试验
• DIN 50125, Metallic Materials Experiment: Tensile Test, Preparation Principles·DIN 50125，金属材料实验：拉伸试验，制备原则
• DIN 50136, Metallic Materials Experiment: Ring-shaped flattening test of pipe·DIN 50136，金属材料实验：管道环形压扁试验
• DIN 50137, steel test: ring flaring test of pipe·DIN 50137，钢试验：管道扩口试验
• DIN 50138, steel test: ring tensile test of pipe·DIN 50138，钢试验：管道环拉伸试验
• DIN 50140, Metallic Materials Test: Tube and Tube Tension Tests for Incompetent Adjustability Meters·DIN 50140，金属材料试验：不合格可调仪表的管子和管子张力试验
• DIN 50145, Metal Materials Experiment: Tensile Test·DIN 50145，金属材料实验：拉伸试验

Concept概念

As far as this standard is concerned, steels that have a good mechanical properties at a higher temperature, up to 6 00 °C, and even under long-term load, are called heat-strength steels.

就本标准而言，在高达600°C的高温下，甚至在长期载荷下具有良好机械性能的钢被称为热强度钢。

Marking and ordering标记和订购

The steel grade or material number should be written to the abbreviation of the product as shown in the following example:

钢材等级或材料编号应写在产品的缩写上，如下例所示：

Example 1:示例1：

A DIN 17175 outer diameter 3 8mm, wall thickness 2.5 mm mm steel grade ST35.8 material, number 1.03 0 5 seamless steel pipe whose name is written: steel pipe DIN 17175-ST35.8 - 38 × 2.5 or steel pipe DIN 17175 -1.0305 - 3 8 × 2 . 5DIN 17175 外径3.8mm，壁厚2.5mm钢级ST35.8材料，编号1.03 0 5无缝钢管，其名称写为：钢管DIN 17175-ST35.8-38×2.5或钢管DIN 17175-1.0305-3.8×2 . 5

When ordering goods, except for the above-mentioned requirements, the total length required and the required acceptance test certificate should be stated. If it is a non-incorporated steel pipe, the quality level should be stated.

订购货物时，除上述要求外，还应说明所需的总长度和所需的验收测试证书。如果是非合并钢管，应说明质量等级。

Requirements要求

Production method生产方法

The steel pipe to which this standard relates may be produced by hot rolling, cold rolling, hot pressing, hot drawing or cold drawing.

本标准涉及的钢管可通过热轧、冷轧、热压、热拉或冷拔生产。

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.

根据吹氧法，管钢可以在平板炉或电炉中冶炼，所有钢材都应采用静态方式铸造。

Supply status供应状态

The full length of the steel pipe shall be delivered through a suitable heat treatment. According to each steel type, heat treatment includes:

钢管的全长应通过适当的热处理交付。根据每种钢种，热处理包括：

- normal fire
- Retirement
- tempering; from the quenching temperature, it is not cold, but then tempered as well as

- Adjust the mass by the isothermal transformation method

If a satisfactory uniform crystal structure is produced after hot work, the appropriate heat treatment for St35.8, St45.8, 17Mn4, 19Mn5, and 15 Mn3 steels is considered to have been met. Under the same premise, the 13CrMo44 and 10CrMo910 steels will be tempered to replace the complete quenching and tempering treatment. In any case, 14MoV63 and 20XcrMoV121 steels are supplied after tempering treatment.

如果热加工后产生了令人满意的均匀晶体结构，则认为已经满足St35.8、St45.8、17Mn4、19Mn5和15Mn3钢的适当热处理要求。在相同的前提下，13CrMo44和10CrMo910钢将进行回火处理，以取代完全的淬火和回火处理。在任何情况下，14MoV63和20XcrMoV121钢都是在回火处理后供应的。

Dimensions Tolerance尺寸公差

Process performance工艺性能

The tube should meet the requirements of the ring test. For the expansion rate (diameter change) of the ring-shaped flaring experiment, no impermissible defects (such as cracks, crepe, folding, and delamination) shall occur during the test.管子应符合环试验的要求。对于环形扩口实验的膨胀率（直径变化），试验过程中不应出现不允许的缺陷（如裂纹、起皱、折叠和分层）。

Surface condition表面状况

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.

管子必须具有实现相对光滑的内外表面的制造方法，以便可以使用热轧法或冷轧法。管子不应有不可接受的裂纹、折痕和折痕。只要钢管的壁厚不超过允许的尺寸偏差，并且不影响钢管的性能，就可以在制造过程中产生一些不均匀和浅的纵向划痕。机械加工（如抛光）可用于去除表面的轻微沉降，但不能减少最小允许壁厚。

Heat treatment and processing热处理和加工

Reference data for heat treatment temperature热处理温度参考数据
Hot working is possible from 1100 to 80 ° °C, and the temperature can be reduced to 750 °C during processing.热加工温度范围为1100至80°C，加工过程中温度可降至750°C。
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.

在地方部门的配套整改工作中，应注意动火作业的有效规范；应该有一个监控温度系统。在较高的温度范围内，即1100至900°C，适用于锻造和桥墩加厚，约为85°C，加工过程中温度可降至75°C以上。
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.

例如，在最后一道工序之前，或在相同的热加工过程中，如果工件的加热温度高于正火温度但不超过1000°C，变形过程高于75°C，或---------在最后一个工序中，变形程度不超过5%-在700°C结束时，则St35.8、St45.8、17Mn4、19Mn5和15Mo3钢的正火是多余的。13CrMo44和10CrMo910只需要回火。
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.

对于在1000至1000°C左右的温度下进行多次和/或长时间的热处理，工件应在最后一次变形过程之前冷却至350°C左右。如果正火或调质处理足够，那么钢的热加工温度不应超过1000°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.

相反，如果成型结束温度高于10°C，则St35.8、St45.8、17Mn4、19Mn5和15Mo3钢必须正火，而13CrMo44和10CrMo910应回火。

14MoV63 and X20CrMoV121 steels should be reconditioned after hot work.

14MoV63和X20CrMoV121钢应在热加工后进行修复。

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.

根据本标准，钢制管道可以进行冷加工，如弯管、扩口、拉拔和切管；对于X20CrMoV121和14CrV63钢，应注意高屈服点和抗拉强度。弯曲、膨胀和冷拔后，变形正常，不需要补充热处理。