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

DIN 17175是高溫高壓環境中使用的耐熱鋼無縫管的標準規範。

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.

它涵蓋了適用於高溫下運行的鍋爐、管道和熱交換器等應用的各種等級的碳和合金鋼管。該標準規定了這些管子的尺寸、技術條件和機械性能，以確保其適用於特定的工業用途。

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標準適用於無縫鋼管。這些管道可用於製造在高達600°C和高溫下運行的蒸汽鍋爐、管道、壓力容器和儀器。由於總負載和特殊的氧化條件，這些管道可以降低或升高。列出的溫度上限。

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.

該標準於1959年首次發布，此後經過多次修訂。它規定了高溫耐熱鋼無縫管製造的技術要求，包括化學成分、機械性能、尺寸公差和測試方法等。

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適用於用於製造鍋爐、管道和其他暴露在高溫高壓下的壓力容器的無縫管。這些管子通常用於各種行業，包括發電、石化和化學工業。

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.

總體而言，DIN 17175是高壓和高溫應用中使用的無縫鋼管的重要標準，為鍋爐和換熱器中使用的耐熱鋼提供了技術規範和質量要求。

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無縫鋼管廣泛應用於熱交換設備。DIN 17175合金鋼管隻是一個大類，它有很多分類。

What is DIN 17175 standard?  什麽是DIN 17175標準？

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標準是由德國標準化研究所（Deutsches Institut für Normung）為耐熱鋼製成的無縫管製定的技術規範。這些管子適用於高溫高壓環境，如鍋爐、管道和熱交換器。該標準概述了這些管子的尺寸、技術條件和機械性能的要求，以確保它們在涉及高溫的各種工業應用中的適用性和可靠性。

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合金鋼管隻是一個大類，它有很多分類。日皮视频在线观看主要日皮视频网站DIN 17175 ST35.8、DIN 17175 ST45.8和10CrMo910鋼管。這種合金鋼管隻是一個大類，有很多分類。日皮视频在线观看主要日皮视频网站DIN 17175 ST35.8、DIN 17175 ST45.8和10CrMo910鋼管。

Field of application應用領域

For high middle, low pressure boiler and pressure purpose用於高中低壓鍋爐和壓力用途

Delivery Conditions交貨條件

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:

管子應在其整個長度上進行適當的熱處理。根據鋼的類型，應使用以下熱處理：

• 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是什麽材料？

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標準涵蓋了一係列被稱為耐熱鋼的材料，這些材料是專門為在高溫下保持其機械性能和結構完整性而設計的。這些材料包括各種合金和非合金鋼牌號，如15Mo3、13CrMo44、10CrMo910等。

Chemical Compositions of DIN 17175  DIN 17175的化學成分

What is DIN 17175 ST 35.8 equivalent to ASTM?  DIN 17175 ST 35.8與ASTM的等效性是什麽？

DIN 17175 ST 35.8 is equivalent to ASTM A179. 

DIN 17175 ST 35.8等同於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.

這兩個標準都規定了用於換熱器和冷凝器的無縫碳鋼管。這些材料具有相似的性能，並用於類似的應用，特別是在高溫和傳熱環境中。

Mechanical Properties of DIN17175  DIN17175的機械性能

DIN 17175 equivalent ASTM   DIN 17175等同於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標準在ASTM標準中有各種等效物，用於高溫和熱交換器應用中的無縫管。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.

請注意，這些等效性取決於具體等級和預期應用。建議參考具體的材料規格以獲得準確的等效性。

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標準的一部分，是指用於高溫和熱交換器應用中無縫管的低碳鋼。以下是St35的一些一般材料特性：

1. Chemical Composition:1.化學成分：
   • 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.機械性能：
   • Tensile Strength: 360-480 MPa (depending on tube diameter)
   • Yield Strength: 235 MPa minimum
   • Elongation: 25% minimum
   • Hardness: Not specified
3. Physical Properties:3物理性質：
   • 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，機械性能可能因熱處理和製造工藝等因素而異。

The same effective standards and reference materials相同的有效標準和參考物質

• DIN 2391, part 1 , cold drawn or cold rolled precision seamless steel: size.·DIN 2391，第1部分，冷拔或冷軋精密無縫鋼：尺寸。
• DIN 2413, Steel tube: Wall thickness resistance to internal pressure.·DIN 2413，鋼管：壁厚耐內壓。
• DIN 2448, seamless steel pipe: size and weight.·DIN 2448，無縫鋼管：尺寸和重量。
• DIN 2915, seamless and welded steel tubes for water tube boilers.·DIN 2915，水管鍋爐用無縫和焊接鋼管。
• DIN 2917 , Non-stitched steel tubes for hot steam pipes and headers : Dimensions·DIN 2917，熱蒸汽管道和集管用非縫合鋼管：尺寸
• DIN 17007 Part 2·DIN 17007第2部分
• DIN 50049, material test certificate·DIN 50049，材料測試證書
• DIN 50115, Metal Materials Experiment: Notch Impact Toughness Test·DIN 50115，金屬材料實驗：缺口衝擊韌性試驗
• DIN 50125, Metallic Materials Experiment: Tensile Test, Preparation Principles·DIN 50125，金屬材料實驗：拉伸試驗，製備原則
• DIN 50136, Metallic Materials Experiment: Ring-shaped flattening test of pipe·DIN 50136，金屬材料實驗：管道環形壓扁試驗
• DIN 50137, steel test: ring flaring test of pipe·DIN 50137，鋼試驗：管道擴口試驗
• DIN 50138, steel test: ring tensile test of pipe·DIN 50138，鋼試驗：管道環拉伸試驗
• DIN 50140, Metallic Materials Test: Tube and Tube Tension Tests for Incompetent Adjustability Meters·DIN 50140，金屬材料試驗：不合格可調儀表的管子和管子張力試驗
• DIN 50145, Metal Materials Experiment: Tensile Test·DIN 50145，金屬材料實驗：拉伸試驗

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.

就本標準而言，在高達600°C的高溫下，甚至在長期載荷下具有良好機械性能的鋼被稱為熱強度鋼。

Marking and ordering標記和訂購

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

鋼材等級或材料編號應寫在日皮视频APP下载的縮寫上，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 外徑3.8mm，壁厚2.5mm鋼級ST35.8材料，編號1.03 0 5無縫鋼管，其名稱寫為：鋼管DIN 17175-ST35.8-38×2.5或鋼管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.

訂購貨物時，除上述要求外，還應說明所需的總長度和所需的驗收測試證書。如果是非合並鋼管，應說明質量等級。

Requirements要求

Production method日皮视频网站方法

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

本標準涉及的鋼管可通過熱軋、冷軋、熱壓、熱拉或冷拔日皮视频网站。

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.

根據吹氧法，管鋼可以在平板爐或電爐中冶煉，所有鋼材都應采用靜態方式鑄造。

Supply status供應狀態

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

鋼管的全長應通過適當的熱處理交付。根據每種鋼種，熱處理包括：

- 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.

如果熱加工後產生了令人滿意的均勻晶體結構，則認為已經滿足St35.8、St45.8、17Mn4、19Mn5和15Mn3鋼的適當熱處理要求。在相同的前提下，13CrMo44和10CrMo910鋼將進行回火處理，以取代完全的淬火和回火處理。在任何情況下，14MoV63和20XcrMoV121鋼都是在回火處理後供應的。

Dimensions Tolerance尺寸公差

Process performance工藝性能

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.管子應符合環試驗的要求。對於環形擴口實驗的膨脹率（直徑變化），試驗過程中不應出現不允許的缺陷（如裂紋、起皺、折疊和分層）。

Surface condition表麵狀況

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.

管子必須具有實現相對光滑的內外表麵的製造方法，以便可以使用熱軋法或冷軋法。管子不應有不可接受的裂紋、折痕和折痕。隻要鋼管的壁厚不超過允許的尺寸偏差，並且不影響鋼管的性能，就可以在製造過程中產生一些不均勻和淺的縱向劃痕。機械加工（如拋光）可用於去除表麵的輕微沉降，但不能減少最小允許壁厚。

Heat treatment and processing熱處理和加工

Reference data for heat treatment temperature熱處理溫度參考數據
Hot working is possible from 1100 to 80 ° °C, and the temperature can be reduced to 750 °C during processing.熱加工溫度範圍為1100至80°C，加工過程中溫度可降至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.

在地方部門的配套整改工作中，應注意動火作業的有效規範；應該有一個監控溫度係統。在較高的溫度範圍內，即1100至900°C，適用於鍛造和橋墩加厚，約為85°C，加工過程中溫度可降至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，在最後一道工序之前，或在相同的熱加工過程中，如果工件的加熱溫度高於正火溫度但不超過1000°C，變形過程高於75°C，或---------在最後一個工序中，變形程度不超過5%-在700°C結束時，則St35.8、St45.8、17Mn4、19Mn5和15Mo3鋼的正火是多餘的。13CrMo44和10CrMo910隻需要回火。
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.

對於在1000至1000°C左右的溫度下進行多次和/或長時間的熱處理，工件應在最後一次變形過程之前冷卻至350°C左右。如果正火或調質處理足夠，那麽鋼的熱加工溫度不應超過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，如果成型結束溫度高於10°C，則St35.8、St45.8、17Mn4、19Mn5和15Mo3鋼必須正火，而13CrMo44和10CrMo910應回火。

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

14MoV63和X20CrMoV121鋼應在熱加工後進行修複。

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.

根據本標準，鋼製管道可以進行冷加工，如彎管、擴口、拉拔和切管；對於X20CrMoV121和14CrV63鋼，應注意高屈服點和抗拉強度。彎曲、膨脹和冷拔後，變形正常，不需要補充熱處理。