Bright Annealed NBK Seamless Precision Steel Tube DIN 2391  EN 10305-1

Bright Annealed NBK Seamless Precision Steel Tube DIN 2391 EN 10305-1

Product Details:

Place of Origin: CHANGZHOU, CHINA
Brand Name: Joyruns
Certification: ISO9000
Model Number: EN10305-1 Mechanical steel Tube

Payment & Shipping Terms:

Minimum Order Quantity: 2TONs
Price: Negotiable
Packaging Details: Exporting package/wooden box package
Delivery Time: 30DAYS
Payment Terms: TT OT 100% LC AT SIGHT
Supply Ability: 1000Ton/month
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Detail Information

Standard: DIN 2391 / EN 10305-1 / EN10305-4 OD. Range: 3.16mm – 114.3mm
Wall Thickness: 0.5mm-15mm Length: Max Length 12M
Grade: ST35, ST37.4, ST37, ST45, ST52, ST52.4, E235, E255, E355. Delivery Condition: NBK, Bright Anaerobic Normalizing.
High Light:

EN 10305-1 Seamless Precision Steel Tube

,

NBK Seamless Precision Steel Tube

,

DIN 2391 Seamless Precision Steel pipe

Product Description

Bright annealed / NBK Precision Seamless Steel Tube according to DIN 2391 / EN 10305-1 / EN10305-4

Main Features:
High accuracy, excellent brightness, free of rust, no oxide layer, no cracks and other defects, high inside wall cleanness. And the high-pressure carbon steel tubes are able to stand high pressure, No deformation after cold bending, no cracking after flaring and flattening. The complicated geometrical forming and machining can be realized.
▪ Main Application:
Precision tubes for hydraulic systems, automobiles, Diesel Engines, machinery, and other areas which require high precision, cleanness, and high mechanical properties performance.

▪ Standard:
DIN 2391, EN 10305-1, EN 10305-4
▪ Materials:
ST35, ST37.4, ST37, ST45, ST52, ST52.4, E235, E255, E355.
▪ Delivery condition:
NBK, bright anaerobic normalizing.

 
EN 10305-1 Chemical composition(%) 

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

 

EN 10305-1 Mechanical and technological properties 

Yield strength
(min Mpa)
Tensile strength
(min Mpa)
Elongation
(min %)
215 290-430 30
235 340-480 25
355 490-630 22

 

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 a vacuum.

 

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