370X305 E355 St52 Heavy Hydraulic Cylinder Cold Drawn Steel Pipe +Sr Bks

Min.Order: 1
Product origin: Wuxi, Jiangsu, China
Infringement complaint: complaintComplaint
US$ 1100

Description

Description :  cold drawn steel pipes, cold drawn tubes are precision tubes with exact tolerance on OD and ID. When hot finished tubes can not meet requirement on OD and ID tolerance, we will cold drawn the hot rolled tubes to get better tolerance. They are also called ready to hone or ready to skive tubes.

Popular standard and steel grade:

EN10305-1

E355 E235 E410 E470 C45E

DIN2391-1

ST52 ST45 ST52.3

ASTM A519

SAE1020 SAE1045 SAE1026

GB/T

20# 45# 16Mn Q345B Q345D Q345E 42CrMo 27SiMn

 

Application: hydraulic cylinder, pneumatic cylinder,Jack, cylinder barrel,and and all pipes have requirement for tolerance.

Manufacture Method: hot rolled and then cold drawn.

Heat Treating Method/Delivery Condition:

BK

BKS

GBK

NBK

Q+T

+C

+SR

+A

+N

Q+T

Cold drawn

Stress relieved

Annealed

Normalized

QUENCHED +

TEMPERED

 

 Parameters:

 Manufacture

method

Cylinder ID (mm)

Length

(m)

Straightness

(mm/m)

Tolerance

on ID

Roughness

(μm)

 

Cold drawn

40-420

≤16M

0.2-0.5

Depends on

 requirement

0.8-1.6

cold drawn-

honed

40-420

12M

0.2-0.3

H8-H9

0.2-0.8

Cold drawn-skived & burnished

40-420

9M

0.2-0.3

H8-H9

≤0.4

 

Mechanical property:

 

Final Supply

Condition

Cold finished

(Hard)(BK)

Cold drawn and stress-relieved 

                     (BK+S or + SR)

Hardness HB

Parameters

T.S

obN/mm2

Elongation

δ5%

T.S

obN/mm2

Y.S

OsN/mm2

Elongation

δ5%

20# (A106B, ST45, E255)

>=550

>=8

>=520

>=375

>=12

175

45#(CK45)

>=650

>=5

>=600

>=500

>=10

190

Q345B(ST52, E355)

>=640

>=5

>=600

>=520

>=15

190

25Mn

>=640

>=5

>=600

>=510

>=15

195

27SiMn

>=840

>=5

>=760

>=610

>=10

220

Chemical Properties:

Material

C%

Mn%

Si%

S%

P%

20#

0.17-0.23

0.35-0.65

0.17-0.37

≤0.035

≤0.035

ST45

≤0.21

≥0.4

≤0.35

≤0.025

≤0.025

E255

≤0.21

0.4-1.1

≤0.35

≤0.025

≤0.025

45#

0.42-0.50

0.50-0.80

0.17-0.37

≤0.035

≤0.035

Q345B

≤0.20

≤1.70

≤0.50

≤0.035

≤0.035

E355

≤0.22

≤1.6

≤0.55

≤0.025

≤0.025

ST52

≤0.22

≤1.6

≤0.55

≤0.04

≤0.04

25Mn

0.22-0.29

0.70-1.0

0.17-0.37

≤0.035

≤0.035

27SiMn

0.24-0.32

1.10-1.40

1.10-1.40

≤0.035

≤0.035

Part of size list (ID*OD)

40*50

 

100*127

 

240*273

40*55

 

110*130

 

250*266

50*60

 

120*140

 

250*280

50*63

 

120*145

 

250*300

60*70

 

125*140

 

280*323

60*73

 

125*145

 

280*325

63*73

 

140*165

 

300*320

63*76

 

140*168

 

300*356

70*80

 

150*180

 

320*340

70*82

 

160*184

 

320*356

70*85

 

160*194

 

320*370

80*90

 

170*200

 

350*370

80*92

 

180*210

 

400*420

80*95

 

200*216

  

80*100

 

200*220

  

90*102

 

200*232

  

90*105

 

200*245

  

100*114

 

220*250

  

100*121

 

220*273

  

 

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