St52 Hydraulic Steel Tube

St52 Hydraulic Steel Tubes Introduction Honed Tubes are presicion tubes with smooth inside, they also could be skived and burnished pipe. Tubes or pipes inside tolerance could be H10, H9 or H8. Outside tolerance, wall thickness tolerance are produced according to seamless cold drawn tubes for...
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St52 Hydraulic Steel Tubes Introduction

Honed Tubes are presicion tubes with smooth inside, they also could be skived and burnished pipe. Tubes or pipes inside tolerance could be H10, H9 or H8. Outside tolerance, wall thickness tolerance are produced according to seamless cold drawn tubes for precision application standard GB/T3639-2009,EN10305 or DIN2391 standard. Material SAE1020, 20#, ST45, CK45, ST52, E355 tubes and so on for you to choose.

Hydraulic Steel Tube technical parameters and Details

Application: hydraulic cylinder, pneumatic cylinder, oil cylinder, telescopic cylinder.

Original: Jiangsu, China

Certification: ISO9001.

Material: SAE1020, 20#, ST45, CK45, ST52, E355

Payment term: TT, LC

Delivery date: usually 20 to 40 days.

Packing: packed in bundle, oiled inside, with caps on both ends.

Market: Middle East/ Africa/Asia/South America/Europe/North America

MOQ:  Depends on exact size and material.

Hydraulic cylinder hard chrome plated piston rod and honed tube For pipes / tubes:

1. Material we have :

DIN2391 standard ST52, St45,  EN10305 standard E355,E255, ASTM A106B grade, 16Mn, C20/20#, CK45

2. Chemical composition:

Material

C

Si

Mn

S(≤)

P(≤)

Cr

Ni

Mo

other

A106B/ C20#

0.17—0.23

0.17—0.37

0.35—0.65

0.035

0.035

≤0.25

≤0.30

Cu≤0.25

CK45#

0.42—0.50

0.17—0.37

0.50—0.80

0.035

0.035

≤0.25

≤0.30

Cu≤0.25

Q345B

≤0.20

≤0.55

1.00—1.60

0.040

0.040

V:0.02-0.15

Nb:0.015-0.06

Ti:0.02-0.20

Alt≥0.015

ST52

E355

16Mn

≤0.20

≤0.55

1.00—1.60

0.045

0.045

V:0.02-0.15

Nb:0.015-0.06

Ti:0.02-0.20

16Mn

25Mn

0.22—0.30

0.17—0.37

0.70—1.00

0.035

0.035

≤0.25

≤0.25

27SiMn

0.24—0.32

1.10—1.40

1.10—1.40

0.030

0.030

42SiMn

0.39—0.45

1.10—1.40

1.10—1.40

0.030

0.030

42CrMo

0.38—0.45

0.17—0.37

0.50—0.80

0.025

0.025

0.90—1.20

0.15—0.25

Production Process(001).jpg

After-sales service: 
1. Where to buy our products for one year warranty and life long maintenance. 
2. 24-hour telephone service. 
3. A large stock of components and parts, easily-worn parts. 

Production process

Raw material – annealing for material of 45#, 27SiMn, 25Mn – Acid cleaning – parkerizing & Saponifying – cold drawn – leveling – saw off bad section – stress relieving – leveling –honing or skiving – inspection – oiled plated - packing

Quality control

1. We only buy raw material from famous tube factory, and Checking raw material quality before production.

2. We check the tube ID tolerance, OD tolerance and surface after cold drawn one by one.

3. We inspect the honed tube inside tolerance and surface again one by one after honing or skiving.

 


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