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                          Hydraulic honed tube, Cylinder tube           


Description

honed tube is produced by “Suitable To Hone” Drawn Over Mandrel (DOM) and Cold Drawn Seamless (CDS).

The honing process involves using abrasive polishing stones and abrasive paper to remove small amounts of material, to produce extremely precise ID dimensions and improved finishes.

honed tube is ready to use for hydraulic cylinder applications without further ID processing.

Quality Standards


DIN 2391 Seamless Precison Steel Tubes
EN10305 Steel Tubes for Precision Applications Seamless Cold Drawn Tubes
ASTM A519 Standard Specification for Seamless Carbon and Alloy Steel Mechanical Tubing
JIS G3445 Carbon Steel Tubes for Machine Structural Purposes

Steel Grades

ST52 ST45 E355 1020 1026

Chemical Composition(%)

Grade

C

Si

Mn

P

S

Cr

Mo

St 45 (DIN1.0408)

0.21 max

0.35 max

0.40 min

0.025 max

0.025 max

/

/

St 52 (DIN1.0580)

0.22 max

0.55 max

1.60 max

0.025 max

0.025 max

/

/

E355

0.22 max

0.55 max

1.60 max

0.025 max

0.025 max

/

/

1020

0.18-0.25

/

0.30-0.60

0.040 max

0.050 max

/

/

1026

0.22-0.28

/

0.60-0.90

0.040 max

0.050 max

/

/

Mechanical Properties( T=20°C if not differently stated ):

Grades

Delivery Conditions

Tensile Strength Rm (Mpa)

Elongation in the longitudinal direction Al (%)

St 45

+A (GBK)

390 min

21 min

St 52

+A (GBK)

490 min

22 min

E355

+A (GBK)

450 min

22 min

1020

+A (GBK)

390 min

21 min

Product Processing  

Raw materials- Cold drawn/rolled- Heat treatment (BKS)- Honed - packing.

Product Processing

Processing Way

Cylinder Barrel ID (mm)

Max Length (mtr)

Straightness (mm/mtr)

ID Tolerance

Wall Thickness Tolerance (mm)

ID Roughness (μm)

Cold Drawn

40-320

12

0.2-0.5

H8-H10

±5%

0.8-1.6

Cold Rolled

12-100

12

0.2-0.5

H8-H10

±5%

0.8-1.2

Cold Drawn+Honed

40-500

8

0.2-0.3

H7-H9

±5%

0.2-0.8

Cold Drawn-SRB

40-400

7

0.2-0.3

H8-H9

± 5%

0.2-0.4

Deepth Drilling-Honed

320-1100

8

0.2-0.3

H7-H9

±8%

0.2-0.8

Deepth Drilling-SRB

320-600

7

0.2-0.3

H8-H9

±8%

0.2-0.4

 Applications

       Hydraulic cylinders for a variety of heavy equipment industries

 Package

All products are shipped considering method of cartage in appropriate packaging to protect from damage. Special overseas packaging is available.

 

Honed ID Tubing are packaged with either steel sheet caps banded to each end, welded steel plates, or wood crates to protect the Honed ID.

 

 

 

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Contact Us

Contact: Dooharvest

Phone: +86 186 6128 5080

Tel: +86 186 6128 5080

Add: Economic Development Zones Huishan, Wuxi, Jiangsu, China