Honed tube for hydraulic cylinder

Standard

DIN2391, EN10305, JIS G3445, ASTM A519, GB/T 8713...

Material

ST45, ST52, E355, E355SR, STKM13C, SAE1026, 20#, Q235B, CK45...

Heat treatment

BK+S

Specification

Outer diameter(mm)

Inner diameter(mm)

40-400mm

30-320

I.D Tolerance

H8-H9

Length

3-9m (Customers usually choose the 4~5.8m)

Straightness

1/1000

ID roughness

RA 0.4micron(max)

Technology

Honed & SRB(SKIVED AND ROLLER BURNISHED )

Scope

Honed tube for hydraulic cylinder, swivel crane, injection machine and
construction machine application

Supply Ability:

40000MT/month

Coil weight:

3-8MT/Coil or as your request

Packaging:

Export standard, seaworthy

Substrate:

Cold rolled Substrate,Hot rolled Substrate

Payment terms:

T/T, L/C at sight,West Union,D/P,D/A,Paypal

Delivery time:

10-20days after confirmed order

Loading port:

   Ningbo

Container size:

20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)

40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)

40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High)

Chemical composition

Steel Grade

C%

Si%

Mn%

P%

S%

AL%

E215

≤0.10

≤0.05

≤0.7

≤0.025

≤0.025

≥0.025

E235

≤0.17

≤0.35

0.4-1.2

≤0.025

≤0.025

E255

≤0.21

≤0.35

0.4-1.1

≤0.025

≤0.025

E355

≤0.22

≤0.55

≤1.6

≤0.025

≤0.025

 Mechanical properties at room temperature

Delivery Condition

BK

BKW

GBK

NBK (N)

Steel Grade

Rm

A %

Rm

A %

Rm

A %

Rm   

ReH 

A %

Mpa (Min)

(Min)

Mpa(Min)

(Min)

Mpa(Min)

(Min)

Mpa(Min)

Mpa(Min)

(Min)

E215

430

8

380

12

280

30

290~430

215

30

E235

480

6

420

10

315

25

340~480

235

25

E255

580

5

520

8

390

21

440~570

255

21

E355

640

4

580

7

450

22

490~630

355

22