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Small Diameter Carbon Steel Mechanical Tubing 30mm 32mm OD For Hydraulic System

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Dmetec.Co., Ltd.
[Korea]

Address
#402-603, Techno-Park, 655 Pyeongcheon-Ro, Wonmi-gu, Bucheon-si, Gyeonggi-do
Phone
82-32-2340011
Contact name
U.B. Lee

Quick Information

  • Brand Name: SHENGDINGYUAN
  • Place of Origin: China

Description

Small Diameter Carbon Steel Mechanical Tubing 30mm 32mm OD For Hydraulic System

Standard:EN10305-1/4 Size:OD4-60mm,WT:0.5-6mm Material:E235,E255,E355 Delivery State:NBK/GBK,BK,BKW,BKS. 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 Features: 

Surface quality:very smooth and bright without oxide scale,pock,strach,crack and other defects. Surface roughness:Ra:0.8-1.3 um. Straightness:0.5-1mm/1000mm. Internal hole Cleaness:clean without iron scrap,dust. Mechanical Properties:better extending rate and strength property.

Tolerance Table for Automotive Seamless Round Mechanical Tubing

NAME

SCOPE(mm)

GB (mm)

DIN (mm)

Enterprise control(mm)

Special high-precision(mm)

OD

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 of  Carbon Steel Mechanical Tubing 

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

-

Mechanical properties of Carbon Steel Mechanical Tubing 

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

Delivery condition and heat treatment processing

Delivery Condition

Heat treatment process

+C

Cold drawn/hard.After the last cold forming,no heat treatment.

+LC

Cold drawn/soft.After the last heat treatment follows the cold drawing there is a light finishing pass.

+SR

Cold drawn and stress relieved annealed. After the final cold drawing process the tubes are stress relieved annealed in a controlled atmosphere.

+A

After the final cold drawing process the tubes are stress relieved annealed in a controlled atmosphere.

+N

Normalized. After the last cold drawing process the tubes are annealed in a controlled atmosphere.

Production process: Quality Carbon steel — Cold Drawn — Heat Treatment Without Oxidization (NBK Status) — Nondestructive Testing— Flushing The Internal Hole With Special Equipment Under The High Pressure —Dealing With Antirust Oil On Surface — Plastic Capping On Both Ends.

Production process quality control: We use the domestic first-class drawing machine,the production process is controlled with high hardness alloy internal and external matrix,so the product dimensions tolerance and ovality are strictly controlled in high level.Through the first, middle and last process inspection to ensure product quality.

Inner and Outer Surface Cleaning: We adopt automatic inner surface cleaning machine, rotating brush cleaning and high pressure oil flushing to clean the inner and outer surface.The new steel tube production craftsmanship can effectively remove all particulate attached to the inner and outer surface of tubes and thus achieving the utmost surface cleaness and polishness.

Applications:

Automotive tubes are used for production of automotive steering systems,clutch system, braking system engine high pressure oil injecting tube,cardan shafts, shock absorbers and air springs, parts of the chassis, axle shafts, construction parts of chassis and axles, steering components, seats construction, bracing for dashboard.

Marking of precision tubes and bundles of precision tubes

Marking of standard precision tubes is done according to standards or upon agreement by the InkJet system either in one spot or along the whole length of a tube. Bundle marking is done either by one or multiple labels with required data.

Competitive Advantage:

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

Production Equipment:

 Packing and loading:

 Laboratory Testing:

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