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E355 ST52 seamless cold drawn steel pipe ID305*OD370

  • Brand BAIHENG
  • Product origin CHINA
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 Email


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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