Hydraulic Steel Tube and Chrome Rod

Professional manufacturer of Hard chrome rod for hydraulic, founded in 2004, major in honed tube, hydraulic tube, chrome rod, chrome bar, chrome shaft, at present we are biggest manufacturer and wholesaler in north of China. Hydraulic steel tube and chrome rod Description Similar name: honed...

Product Details

Professional manufacturer of Hard chrome rod for hydraulic, founded in 2004, major in honed tube, hydraulic tube, chrome rod, chrome bar, chrome shaft, at present we are biggest manufacturer and wholesaler in north of China.


Hydraulic steel tube and chrome rod 


Description 

Similar name: honed tube, cylinder tube, skived tube, cylinder barrel, skived and roller burnished tube

Grade: ST52, CK45, CK20, E355/S355, 20MnV6, 27SiMn, STKM13C, SAE1020/1026/4140, 42CrMo, SS304/316

OD metric size: 30 to 2000 mm

OD imperial size: 1.5" to 50" (inch)

Length: max 16 Meter for some sizes.

Straightness: <0.5 mm/m

Tolerance OD: DIN 2391

Tolerance ID: ISO H8, H9, H10

Roughness (Ra): <0.8

State: high precision cold drawn, seamless, ID honed/burnished

Heat treatment: stress relived, annealed

High precision cold drawn tube is available, please refer to ready to honed tube introduction.


Chemical Composition

Chemical Composition (%)

Steel Grade

C

Si

Mn

P

S

Cr

St45

0.17-0.24

0.17-0.37

0.35-0.65

0.035

0.035

0.250

St52(E355)

≤0.22

≤0.55

≤1.6

0.025

0.025

0.25

SAE 1026

0.22-0.28

0.15-0.35

0.60-0.90

0.040

0.050

/

27 SiMn

0.24-0.32

1.10-1.40

1.10-1.40

0.035

0.035

0.300

20#

0.17-0.24

0.17-0.37

0.35-0.65

0.035

0.035

0.250


Mechanical Properties

Delivery Condition

Cold drawn + stress-relieved (BK+S) (SR)

Cold fished (hard) (BK)

Steel Grade

Tensile strength (Rm Mpa)

Yield strength

Elogation A5%

Tensile strength (Rm Mpa)

Elogation A5%

20#

≥520

≥375

≥15

≥550

≥8

45#

≥600

≥520

≥10

≥640

≥5

E355(Q345B, St52)

≥600

≥520

≥14

≥640

≥5

25Mn

≥600

≥510

≥15

≥640

≥5

27SiMn

≥760

≥610

≥10

≥800

≥5



Similar name: hard chrome plated rod, chrome plated shaft, chromed steel bar, chromed steel rod, piston rod

Steel grade: CK45/SAE1045/EN8,SAE4140/42CrMo,20MnV6,ST52.3,AISI431,TP304/316

Type: round solid bar; hollow bar

Heat treatment: normalized; annealed; stress released; induction hardened

OD metric size: 6mm to 1000mm     OD imperial size: 1/4 to 50 inch

Hard chrome plate thickness: 10 to150 micron meter (as per request)

Surface roughness: Ra<0.4

Tolerance: ISO f7, f8, f9, H6, H7, H8 (as per request)

Ovality: < half of the OD tolerance

Straightness: <0.2 mm/m

Salt Spray Test: ASTM B117-72hours/96hours, results evaluation refers to ISO4540 Rating 8 to1 0.

Package: anti rust oil on material and packed first by cardboard sleeve then in steel frame wooden box.

Hollow chrome plated bar/induction hardened hollow chrome plated bar is available.

Machining service according to detailed drawing is available and other technic request can be discussed.


Chemical Composition

Material

C%

Mn%

Si%

S%

P%

V%

Cr%

Ck45

0.42-0.50

0.50-0.80

0.17-0.37

≤0.035

≤0.035


≤0.25

ST52

≤0.22

≤1.6

≤0.55

≤0.04

≤0.04

0.02-0.15


20MnV6

0.17-0.24

1.30-1.70

0.10-0.50

≤0.035

≤0.035

0.10-0.20

≤0.30

42CrMo4

0.38-0.45

0.50-0.80

0.17-0.37

≤0.035

≤0.035

0.07-0.12

0.90-1.20

40Cr

0.37-0.45

0.50-0.80

0.17-0.37

≤0.035

≤0.035


0.80-1.10


Mechanical Properties

Material

T.S  N/MM2

Y.S  N/MM2

E%(MIN)

CHARPY

CONDITION

CK45

610

355

15

>41J

NORMALIZE

CK45

800

630

20

>41J

Q + T

ST52

500

355

22


NORMALIZE

20MnV6

750

590

12

>40J

NORMALIZE

42CrMo4

980

850

14

>47J

Q + T

40Cr

1000

800

10


Q + T


Quality Inspection and Testing


Application


Introduction of Company

Qingzhou Longyue Hydraulic Machine Co.,Ltd was established in 2001, with more than 10 years import and export experences. Qingzhou Longyue Machine has been an influential exporter in the global metal products market. More than 160 customers from 26 countries and regions have established long-term business relationships with us.


Our main business range is listed as follows:

Carbon Seamless Steel pipe/tube

Hydraulic cylinder tube(Honed tube)

Hard chrome plated rod/bar/shaft(Piston rod)

We sincerely welcome friends from all over the world contact us to establish mutually beneficial business relationships.


Inquiry