Zhejiang Matech Industry Company Limited

TEL: +86-571-28350111
Categories
Contact Us
Hangzhou Matech Steel Company Limited
Tel: +86-571-28350111
Fax: +86-571-86693517
Email: sales@matech-steel.com
Add: Floor 10, Xixi Vally E-Building, Xihu District, Hangzhou, Zhejiang province, China
EN Seamless Precision Steel Pipes

EN Seamless Precision Steel Pipes

EN 10305-1 seamless precision steel tube EN 10305 is for seamless precision steel tube applications. Sunny Steel offers an extensive range of EN 10305 seamless precision steel tube. EN 10305 european standard specifies the technical delivery conditions for seamless cold drawn steel pipe of...

EN 10305-1 seamless precision steel tube

EN 10305 is for seamless precision steel tube applications.
Sunny Steel offers an extensive range of EN 10305 seamless precision steel tube.

EN 10305 european standard specifies the technical delivery conditions for seamless cold drawn steel pipe of circular cross section used in hyhydraulic and pneumatic power systems.

Tubes according to this EN 10305 European standard are characterised by having precisely defined tolerances on dimensions and a specified surface roughness. The allowed pressure rates and temperatures are the responsibility of the customer in accordance with the state of the art and in application of the safety coefficients specified in the application regulations, codes or standards.

图片7.png

Standard and Steel grade:

· EN10305-1 E215

· EN10305-1 E235

· EN10305-1 E355

EN 10305 seamless precision steel tube shall be manufactured from hot finished seamless tubes by cold drawning. Other suitable methods of cold working are permitted. The tubes shall be delivered in the delivery condition +N which means that after the final cold drawing operation the tubes are normalized in a controlled atmosphere.

NBK means protective heat-treating under the non-oxidation enviroment to get a bright and smooth surface for the tubes. 

Chemical composition(%) of EN 10305-1

Steel grade
Name

 Steel
Number

 C(% max)

 Si(% max)

 Mn(% max)

 P(% max)

 S(% max)

 E215

 1.0212

 0.10

 0.05

 0.70

 0.025

 0.015

 E235

 1.0308

 0.17

 0.35

 1.20

 0.025

 0.015

 E355

 1.0580

 0.22

 0.55

 1.60

 0.025

 0.015

Mechanical and technological properties of EN 10305-1

 Yield strength
(min Mpa)

 Tensile strength
(min Mpa)

 Elongation
(min %)

 215

 290-430

 30

 235

 340-480

 25

 355

 490-630

 22

Note:

· The yield point for the annealed (GBK)condition on delivery is at least 50% of the (ultimate) tensile strength. Depending upon the degree of deformation in the drawing operation, the yield point of tubes delivered in the cold-finished/hard (BK)and cold-finished/soft(BKW) conditions, may be increased to a level close to the tensile strength.

· In calculating the yield point, the following values are recommended : cold-finished/hard condition on delivery ≥ 80% of the tensile strength, cold-finished/soft condition on delivery ≥ 70% of the tensile strength.

Quality grade of EN 10305-1

The tubes are supplied in the following quality grades :

A) precision steel tubes intended primarily for mechanical stressing, without any particular quality requirement and without acceptance test certificate.
B) precision steel tubes intended primarily for mechanical stressing, with special quirement and exclusively with acceptance test certificate.
C) precision steel tubes with special requirement according to section 12. Theses requirements and corresponding tests must be agreed, with the customer having to specify his requirements at the time of enquiry and on ordering.

Condition on delivery of EN 10305-1:

Term

Symbol

Explanation

Cold-finished/hard
(cold-finished as-drawn)

BK

No heat treatment after the last cold-forming process. The tubes therefore have only low deformability.

Cold-finished/soft
(lightly cold-worked)

BKW

After the last heat treatment there is a light finishing pass (cold drawing) With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits.

Annealed

GBK

After the final cold-forming process the tubes are annealed in a controlled atmosphere or under vacuum.

Normalized

NBK

The tubes are annealed above the upper transformation point in a controlled atmosphere or under vacuum.

Hot Tags: EN seamless precision steel pipes, China, manufacturers, suppliers, factory, wholesale
Related Products
  • Contact Us
    Hangzhou Matech Steel Company Limited
    Tel: +86-571-28350111
    Fax: +86-571-86693517
    Email: sales@matech-steel.com
    Add: Floor 10, Xixi Vally E-Building, Xihu District, Hangzhou, Zhejiang province, China
  • Categories
  • Copyright © Hangzhou Matech Steel Company Limited All Rights Reserved.