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27SiMn

Hydraulic prop steel pipe

27SiMn
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Implementation standards:

GB/T17396-2009 Hot-rolled seamless steel tubes for hydraulic props

The main production grades of steel pipes are as follows:

20#、35#、45#、27SiMn Etc.  

Hydraulic prop steel pipe is made from high-quality carbon structural steel adding one or several types of alloy elements to improve the strength, toughness and harden-ability of steel. This hot-rolled seamless steel pipe often needs to go through hardening and tempering, chemical hot treatment, surface hardening and other thermal remedy options.

Compared to high-quality carbon structural steel, Hydraulic prop steel pipe owns excellent integrated mechanical real estate. We always roll round, square and flat shaped steel products for usage as important structural parts in machinery or hosting server.

Hydraulic prop steel pipe can be used the cylinder or prop in coal mine hydraulic support and used some other hydraulic cylinders or props. It could be widely applied in hydraulic system, plastic machinery, injection molding machinery, rubber machinery, forging machinery, casting machinery, engineering machinery, automobile industry, shipbuilding industry, metal processing and war field.

Chemical Composition of Hydraulic prop steel pipe

Grade

C

Si

Mn

P

S

Cr

Ni

Cu

Nb

≤%

20

0.17-0.24

0.17-0.37

0.35-0.65

0.035

0.035

0.25

0.25

0.2

–

35

0.32-0.40

0.17-0.37

0.50-0.80

0.035

0.035

0.25

0.25

0.2

–

45

0.42-0.50

0.17-0.37

0.50-0.80

0.035

0.035

0.25

0.25

0.2

–

27SiMn

0.24-0.32

1.10-1.40

1.10-1.40

0.035

0.035

0.25

0.25

0.2

–

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