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Honed Tube Parameters

Product name 

hydraulic cylinder tube /honed tube /seamless honed steel tube

Standard

GB/T3639-2000 DIN2391 EN10305 ASTM A519

Metarial

C20 CK45 Q355B Q355D E355/ST52 SAE1026 4130 4140 STKM 13C

Heat treatment

BK+S

Size

I.D:30mm-400mm

O.D:40mm-480mm

Length

Fixed length, Random length or as requests of customers

Straightness

0.5-1/1000

ID roughness

RA 0.1-0.8micron(max)

Payment term

FOB, CFR, CIF, EXW, FCA and so on

Technology

Honed & SRB(SKIVED AND ROLLER BURNISHED)

Application

Honed tube for hydraulic cylinder, swivel crane, injection machine and construction machine application

Conservation

anti rust oiled inside and outside surface, plastic caps in both ends

Package

bundle with steel strip and knitting strip, or wooden case

Steel Grade carbon steel

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

Delivery condition

BKS

Cold Drawn & Stress-Relieved

Steel Grade

Rm MPa

ReH MPa

Elongation A5(%)

ST45

≥520

≥375

≥15

ST52(E355)

≥600

≥520

≥14

SAE1026

≥600

≥510

≥15

16Mn

≥600

≥520

≥14

20#

≥520

≥375