DIN 2391 standard specifies the Seamless steel tubes used forMechanical and Automobiles.

DIN 2391標準規定了用於機械和汽車的無縫鋼管。

The main products of steel / steel grade: DIN2391-1(ST35, ST45, ST52).

主要日皮视频APP下载鋼/鋼種：DIN2391-1（ST35、ST45、ST52）。

DIN 2391 is included in DIN Handbook 3 and 272. Gives dimensions for seamless precision steel tubes; these tube dimensions have been selected from the range of manufacturable tube dimensions which are mainly used as design elements.

DIN 2391包含在DIN手冊3和272中。給出了無縫精密鋼管的尺寸；這些管尺寸是從主要用作設計元素的可製造管尺寸範圍中選擇的。

What is the difference between Din 2391 and Din 3304? Din 2391和Din 3304有什麽區別？

DIN 2391 applies to seamless precision steel tubes and in compliance with ISO/DIN 3304, those tube dimensions have been selected from the range of manufacture dimensions which are mainly used as design elements.

DIN 2391適用於無縫精密鋼管，符合ISO/DIN 3304標準，這些鋼管尺寸是從主要用作設計元素的製造尺寸範圍中選擇的。

Scope範圍

DIN2391 Part 2 specifies dimensions for cold finished, seamless precision steel tubes and is to be used in conjunction with DIN2391 part2 which states the relevant technical delivery conditions. The preferred sizes listed in standard are mainly used in mechanical and automotive engineering.

DIN2391第2部分規定了冷加工無縫精密鋼管的尺寸，並與DIN2391的第2部分結合使用，後者規定了相關的交貨技術條件。標準中列出的首選尺寸主要用於機械和汽車工程。

Where steel tubes of dimensions specified in this standard are to comply with the technical delivery conditions listed in subclause 1.2 of DIN 2391 Part 2.

本標準規定尺寸的鋼管應符合DIN 2391第2部分第1.2款所列的技術交付條件。

DIN 2391 seamless precision tubes applications – Used in Hydraulic & pneumatic cylinder, Mechanical and Automotive engineering.

DIN 2391無縫精密管應用-用於液壓和氣動缸、機械和汽車工程。

Chemical Composition (%) of DIN2391  DIN2391的化學成分（%）

Delivery Conditions交貨條件

The tubes shall be manufactured from cold drawn or cold rolled processes. The tubes shall be supplied in one of the delivery conditions as follows:

管子應采用冷拔或冷軋工藝製造。管子應按以下交付條件之一供應：

Delivery Condition Symbol in accordance with EN10305 and DIN2391.交付條件符號符合EN10305和DIN2391。

Mechanical Properties機械性能

Inspection and test list for the DIN 2391 Standard  DIN 2391標準檢驗和測試清單

Marking標記

The following marking shall be shown on a label attached to the bundle:捆上的標簽上應顯示以下標記：

• the manufacturer’s name or trade mark;·製造商名稱或商標；
• the specified dimensions;·指定尺寸；
• the number of this European Standard;·本歐洲標準的編號；
• the steel name or number;·鋼材名稱或編號；
• the cast number;鑄造數量
• the delivery condition;·交貨條件；
• in the case of specific inspection, an identification number (e. g. order or item number) which permits the correlation of the product or delivery unit to the related document.·
• 在特定檢查的情況下，一個標識號（如訂單或項目號），允許將日皮视频APP下载或交付單位與相關文件相關聯。

Protection and Packing:保護和包裝：

• Packed in wooden box or bundles protected with plastic paper, and suitably protected for sea-worthily delivery or as requested.·
• 用塑料紙保護的木箱或捆包包裝，並適當保護，適合海運或按要求運輸。
• The tubes shall be delivered with a temporary corrosion protection. The type of protection shall be at the discretion of the manufacturer.·
• 交付的管子應具有臨時防腐保護。保護類型應由製造商自行決定。