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EN10305-1 Seamless Cold Drawn Tubes
Grade E215, E235, E355
EN10305-1 E215, E235, E355 is the standard applicable to seamless cold drawn tubes
EN10305 Consists of the following parts under the general title:
Steel tubes for precision applications.
Technical delivery conditions:
- Part 1: Seamless cold drawn tubes.
- Part 2: Welded cold drawn tubes.
- Part 3: Welded cold sized tubes.
- Part 4: Seamless cold drawn tubes for hydraulic and pneumatic power systems.
- Part 5: Welded and cold sized square and rectangular tubes.
- Part 6: Welded cold drawn tubes for hydraulic and pneumatic power systems.
|Steel Grade||Chemical Components (%)|
|Steel Name||Steel Number||C|
The tubes shall be manufactured from hot finished seamless tubes by cold drawing or other suitable processes. The tubes shall be supplied in one of the delivery conditions as follows:
|Cold drawn/hard||+C||No heat treatment after the final cold drawing process.|
|Cold drawn/soft||+LC||After the final heat treatment there is a suitable drawing pass.|
|Cold drawn and stress relieved||+SR||After the final cold drawing process there is a stress relief heat treatment in a controlled atmosphere.|
|Annealed||+A||After the final cold drawing process the tubes are annealed in a controlled atmosphere.|
|Normalized||+N||After the final cold drawing operation, the tubes are normalized in a controlled atmosphere.|
Delivery Condition Symbol in accordance with EN10305 and DIN2391
|Symbol in accordance with EN 10305||Symbol in accordance with DIN2391|
|Mechanical properties at room temperature|
|Steel Grade||Minimum values for the delivery condition|
|Steel Name||Steel Number||+C||+LC||+SR||+A||+N|
|E215||1.0212||430||8||380||12||380||280||16||280||30||290 to 430||25||30|
|E235||1.0308||480||6||420||10||420||350||16||315||25||340 to 480||235||25|
|E355||1.0580||640||4||580||7||580||450||10||450||22||490 to 630||355||22|
Inspection and test list for the EN 10305 Standard
|Inspection or test types||Test frequency|
|Internal test||Acceptance test|
|Tensile testing||M||One per tested batch|
|Flattening test or extension test||M||Two per tested batch|
|NDT in order to identify leaks||Individual||Individual|
Description Name: EN10305-1 Seamless cold drawn tubes, E235 Precision tubes, Seamless precision tubes, E355 Precision tubes
Production type: Cold drawn or cold rolled
Length: Single random length/ Double random length or as customer’s actual request max length is 10m
Grade: E215, E235, E355
The following marking shall, unless option 22 is specified, be shown on a label attached to the bundle:
- the manufacturer’s name or trade mark;
- the specified dimensions;
- the number of this European Standard;
- the steel name or number;
- the cast number;
- the delivery condition;
- 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.
Option 22: Alternative marking is specified.
Mill test certificates will be issued according to EN10204.3
The tubes Shall be Seamless cold drawn or cold rolled.
Protection and Packing:
Packed in wooden box or bundles protected with plastic paper, and suitably protected for sea-worthily delivery or as requested.
The tubes shall be delivered with a temporary corrosion protection. The type of protection shall be at the discretion of the manufacturer
apply to the Precision steel tubes used.
Photos for EN10305-1:
EN10305-1 E235 NBK Size OD. 8mm x W.T. 1mm
EN10305-1 E355 NBK Size OD. 13.2mm x W.T. 2mm
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