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St52 Seamless Steel Pipe for Hydraulic Cylinder

Basic Info

Model No.:  IR-B steel pipe

Product Description

Model NO.: IR-B steel pipe Technique: Cold Rolled, Cold Drawn, Honed Surface Treatment: Bare Pipe Size: 30mm~416mm End Processing: Plain Ends Trademark: Iron&steel Origin: China Type: Seamless Material: Alloy Steel Section Shape: Round Length: Fixed Length, by Random Surface: Bare Pipe, Anti-Rust Painting Specification: ASTM A210 HS Code: 73045910 ST52 Seamless Steel Pipe for Hydraulic Cylinder
GB3087 Chinese national standard
GB5310 Chinese national standard
ASME SA210 Boiler and pressure vessel code of ASME
ASME SA213 Boiler and pressure vessel code of ASME
DINl7175 Deutsches industrial standard~
Application:
Used as the pipes on the heated side of low and medium pressure boilers(normally with operating pressure not higher than 5.88Mpa and
operating temperature below 450 oc);as the pipes on the heated sides of high·pressure boilers,economizers,overheaters,reheaters and pipes
for petrochemical industry(with the operating pressure above 9.8Mpa and operating temperature ranging between 450~C~650~C1
Specifications of ma}or steel:

Processing form

I.D.mm

Length

Straightness

I.D.tolerance

I.D.Roughness(RA)

Cold-rolled

30-100

≤12M

 
0.3-1.0/1000

H8-H10

0.4-1.6um

Cold-drawn

30-250

≤12M

H8-H10

0.8-1.6um

Hone

40-500

≤12M

H8-H9

0.4-0.8um

SRB

50-250

≤9M

H8

0.1-0.4um

 Tolerance of ID and WT
 

Size of inside
Diameter(mm)

                     ID Tolerance

Tolerance of wall thickness
 

30

+0.0330

+0.0520

+0.0840

 
 
 
<120mm(OD)              ±5%
>120mm up to 210mm±7.5%
>210mm                     ±10%
 
 
 
 

>30-50

+0.0390

+0.0620

+0.1000

>50-80

+0.0460

+0.0740

+0.1200

>80-120

+0.0540

+0.0870

+0.1400

>120-180

+0.0630

+0.1000

+0.1600

>180-250

+0.0720

+0.1150

+0.1850

>250-315

+0.0810

+0.1300

+0.2100

>315-400

+0.0890

+0.1400

+0.2300

Length and cut tolerance
 
Length ≤ 500mm , +2mm
> 500mm ≤ 2000mm, +3mm
> 2000mm ≤ 5000mm, +5mm
> 2000mm ≤ 7000mm, +10mm
 
Standard:DIN 2391,EN10305
Material: St45,St52,E355
 
Chemical composition
 

Steel grade

Chemical composition,%

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

SAE1026

0.22-0.28

0.15-0.35

0.60-0.90

0.040

0.050

/

27SiMn

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

  
9. Mechanical Properties
 

Delivery condition

BK
Cold finished(hard)

BKS
Cold drawn and stress-relieved

Steel grade

Rm Mpa

Elongation
A5(%)

Rm MPa

ReH MPa

Elonggation
A5(%)

ST45

≥550

≥5

≥520

≥375

≥15

ST52(E355)

≥640

≥5

≥600

≥520

≥14

SAE1026

≥640

≥5

≥600

≥510

≥15

16Mn

≥640

≥5

≥600

≥520

≥14

20#

≥550

≥8

≥520

≥375

≥15

 
Tube ends
 
Tube ends shall be cut nominally square to the axis and free from burs
 
11.Delivery condition:BKS
Appearance
 
Tube shall have a smooth internal and external surface consistent with cold working  process, tube inner surface should be free from rust, scratches and other surface
irregularities.

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