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Home / Products / Precision Seamless Steel Tube / Bright Annealing DIN2391 St35 NBK Thin Wall Steel Tubing
Quality Bright Annealing DIN2391 St35 NBK Thin Wall Steel Tubing factory
Quality Bright Annealing DIN2391 St35 NBK Thin Wall Steel Tubing factory
Quality Bright Annealing DIN2391 St35 NBK Thin Wall Steel Tubing factory
Quality Bright Annealing DIN2391 St35 NBK Thin Wall Steel Tubing factory
Quality Bright Annealing DIN2391 St35 NBK Thin Wall Steel Tubing factory
Quality Bright Annealing DIN2391 St35 NBK Thin Wall Steel Tubing factory

Bright Annealing DIN2391 St35 NBK Thin Wall Steel Tubing

Basic Properties
Place of Origin: China
Brand Name: New Era
Certification: ISO9001,TS16949
Model Number: DIN2391 St35 NBK
Trading Properties
Minimum Order Quantity: 1 tons
Price: Negotiation
Payment Terms: T/T
Supply Ability: 3000 tons/month
Tags

cold drawn seamless steel tube

thick wall steel tube

precision seamless steel pipe
Product Summary
DIN2391 ST35 NBK Seamless Precision Steel Tubes Seamless Carbon Cold Drawn / Cold Rolled Precision Steel Tubes Material: St35 Size Range: OD: 6-88mm, WT: 1-15mm, Length: 5.8m/6m, maximal 11.8m Delivery Condition: BK, BKW, BKS, GBK, NBK Application: For high precision purpose, auto industry, like ...

Product Details

Highlight:

NBK Thin Wall Steel Tubing

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St35 Thin Wall Steel Tubing

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DIN2391 Thin Wall Steel Tubing
Product Name: DIN2391 St35 NBK Seamless Precision Steel Tubes
Delivery Condition: NBK
OD Size: 6-88mm
WT Size: 1-15mm
Standard: DIN2391 St35 NBK
Application: High Precision Purpose, Auto Parts, Oil Cylinder, Etc
Steel Material: St35 , St45 , St52
Heat Treatment: NBK (Bright Annealing)
Product Description

DIN2391 ST35 NBK Seamless Precision Steel Tubes

Seamless Carbon Cold Drawn / Cold Rolled Precision Steel Tubes

Material: St35
Size Range: OD: 6-88mm, WT: 1-15mm, Length: 5.8m/6m, maximal 11.8m
Delivery Condition: BK, BKW, BKS, GBK, NBK
Application: For high precision purpose, auto industry, like manipulator, Shock Absorber, Transmission Shaft, Steering Gear, Car Frame, etc.


Stable Quality with Comeptitive Price.
+N(Bright Annealing) Heat Treatment, Surface is bright and smooth, without oxide scale
Good Extending and Bending Ability.

 

Delivery Conditions

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:

Designation Symbol Description
Cold finished (hard) BK Tubes do not undergo heat treatment following the final cold forming and thus, have a rather high resistance to deformation.
Cold finished (soft) BKW The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding).
Cold finished and stress-relieved BKS Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree.
Annealed GBK The last cold forming process is followed by annealing in a controlled atmosphere.
Normalized NBK The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.

 

Quality Control:
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing or Cold Rolling, On line inspection
5. Heat Treatment:+SR, +A, +N
6. Straightening/Cutting to specified length/Finished Measuring Inspection
7. Quality Testing in own lab with Tensile Strength, Yield Strength, Elongation, Hardness, Straightness, etc.
8. Packing and Stocking.

 

Product Name DIN2391 st35 NBK Seamless Precision Steel Tubes
Material St35
Delivery Condition BK, BKW, BKS, GBK, NBK
Standard EN10305-1 / DIN2391 / EN10305-4
Size Range OD: 6-88mm, WT: 1-15mm
Application High precision purpose, auto parts, oil cylinder, etc
Round Billet Bao Steel, Xingcheng Steel, Zhongtian Steel
Keyword Seamless Steel Tube
Certificate TS16949, ISO 9001
HS code 7304319000
Delivery Time 45 days
Pakcing Bundles or Woodern Boxes

 

Steel Grade Chemical Composition
Symbol Material Number

C

Max.

Si

Max.

 Mn

P

Max.

S

Max.
ST35 1.0308 0.17 0.35 ≥0.40 0.025 0.025
ST45 1.0408 0.21 0.35 ≥0.40 0.025 0.025
ST52 1.0580 0.22 0.55 ≤1.60 0.025 0.025

 

Steel Grade BK BKW BKS
Name No.

Rm

Mpa

A

%

Rm

Mpa

A

%

Rm

Mpa

ReH

Mpa

A

%
ST35 1.0308 480 6 420 10 420 315 14
ST45 1.0408 580 5 520 8 520 375 12
ST52 1.0580 640 4 580 7 580 450 10
 
Steel Grade GBK NBK
Name No.

Rm

Mpa

A

%

Rm

Mpa

ReH

Mpa

A

%
ST35 1.0308 315 25 340--470 235 25
ST45 1.0408 390 21 440--570 255 21
ST52 1.0580 450 22 490--630 355 22

 
 

 

FAQ:

 

1. Can you provide a sample to check the quality?
We can provide free sample with same or similar sizes for you to check tube quality.

You need to in charge of Express costs.

 

2. How about your production capacity?
3000 tons/Month.

 

3. What are your terms of payment?
30%TT in advance, Balance to be paid before shipment.

 

4. Where is your factory?
Jiaxing city, 2 hours away from Shanghai.

 

5. How can I get the quotation A.S.A.P?
Please send us an inquiry with full details as following,quotation will sent to you A.S.A.P:
1). Tube Standard
2). Steel Grade

3). Tube Size and Size Tolerance
4). Tube length

5). Quantity

6). If any special requirements

 

6. How about the minimum order quantity?
Normally for one size above 1 ton.

 

Welcome to contact us! Thanks.

Mr. Denny

Managing Director

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