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High Precision Cold Drawn Carbon Seamless Steel Tube EN 10305-1 ST 37.4

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Zhangjiagang Sheng Ding Yuan Pipe-Making Co.,Ltd.

High Precision Cold Drawn Carbon Seamless Steel Tube EN 10305-1 ST 37.4

Country/Region china
Categories Building Glass

Product Details

High Precision Cold Drawn Carbon Seamless Steel Tube EN 10305-1/4 ST 37.4

Description: 

  • Standard:DIN2391/C/EN10305-1/4 /SAEJ524/BS6323/4/JISG3445/ASTMA519
  • OD4-60mm,WT:0.5-6mm
  • Material:ST35,ST37.4,ST37,ST45,ST52,ST52.4,E235,E255,E355,SAE1010,SAE1020
  • Delivery State:NBK/GBK.
  • Raw material:Bao Steel,Huai Steel,XingCheng Steel with good quality.
  • Length:5.8m,6m.
  • Package:Bundles or wooden cases.
  • Surface Anti-rust:Both outside and internal tube surface flushing with anti-rust oil.

 

Quality: 

  • Surface quality:very smooth and bright without oxide scale,pock,strach,crack and other defects.
  • Surface roughness:Ra:0.8-1.3 um.
  • Internal hole Cleaness:clean without iron scrap,dust,better for hydraulic system life.
  • Mechanical Properties:better extending rate and strength property,after bending with no deformation,after flattening and flaring process with no crack.
  • Raw material: Precision tubes are made from carbon steel from quality Bao Steel,XingCheng Steel,and HuaiSteel.

 

 

Tolerance Table Of cold drawn seamless tube EN10305-1/4

NAME

SCOPE(mm)

GB (mm)

DIN (mm)

Enterprise control(mm)

Special high-precision(mm)

Out Diameter

4-30

±0.1

±0.08

±0.05

±0.03

31-40

±0.15

±0.15

±0.05

±0.03

41-50

±0.20

±0.20

±0.08

±0.03

51-60

±0.25

±0.25

±0.08

±0.03

Wall thickness 

0.5-7

±10%,Min±0.12

±10%

±10%,Min±0.05

±10%,Min±0.03

 

 

 

 

 

 

 

 

 
 
Chemical Composition for cold drawn seamless tube EN10305-1/4

Chemical composition(cast analysis)a

Steel grade

% by mass

Steel name

Steel number

C

Si

Mn

P

Sb

AI

max.

max.

max.

max.

max.

min.

E215

1.0212

0.10

0.05

0.70

0.025

0.025

0.025

E235

1.0308

0.17

0.35

1.20

0.025

0.025

-

E355C

1.0580

0.22

0.55

1.60

0.025

0.025

-

 

 

Mechancial properties for cold drawn seamless tube EN10305-1/4

Mechanical properties at room temperature

Steel grade

Minimum values for the delivery conditiona,b

Steel name

Steel number

﹢CC

﹢LCC

﹢SR

﹢Ad

﹢N

Rm

A

Rm

A

Rm

ReH

A

Rm

A

Rm

ReH

A

MPa

%

MPa

%

MPa

MPa

%

MPa

%

MPa

MPa

%

E215

1.0212

430

8

380

12

380

280

16

280

30

290 to 430

215

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

450f

10

450

22

490 to 630

355

22

 

 

 

Competitive Advantage:

  1. Certificate we awarded:TS 16949
  2. Our typical customer: Continential Contitech,Benteler.
  3. We have passed BMW’S review.
  4. We have been cooperating with many auto parts manufacture,our tubes are widely used in BMW,Volkswagen,and other brands.
  5. 400 tons precision steel tubes stock capacity,this make our delivery time short and timely.

 

 

Applications:

Used in hydraulic system,including automotive Hydraulic power steering system, the clutch system, braking system, engine high pressure oil pipe, excavator hydraulic oil pipe,nested card connector (pipe joints) with matching,shippment industry.

 

Production Line:


 

Production Equipment:


 

 Packing and loading:

 


 Laboratory Testing:

 


Our Customer:

 

Certificate Approved:


 

 

 

 

 

 

 

 

 

 

 

 

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