DIN 2391 St 52 Roller Burnished Steel Tubes

DIN 2391 St 52 Roller Burnished Steel Tubes

Roller burnishing is performed on the return stroke. The plastic deformation taking place provides a surface finish of Ra= 0.05 - 0.20 µm - better than broaching, grinding or even honing. Roller burnishing also means an improvement in surface hardness.Roller burnishing steel tubes made mainly for the hydraulic cylinder industry and other applications where fine-finishing of the internal diameter of a tube is required, Primarily for hydraulics in the contracting, mining and construction industries.
 
honed tubes
Roller Burnished Tube/Honed Tube
Standard :DIN 2391(EN 10305-1)
Steel grades : St 52 (E355)
I.D. tolerance：H8
Inside diameter :between 20-1500 mm
Outside diameter : between30-1600mm
Tolerance of Wall Thickness ±7%
Surface finishing: roughness Ra < 0.40 µ (average 0.15÷0.35 µ)
Chemical composition and property of DIN2391 ST52 Cold drawn seamless Roller burnished steel tubes
STEEL GRADE % Max
C
Mn
Si
P
S
0,22
1,60
0,55
0,025
0,025
Tensile strength Min
640 mm²
Yield Point Min
560 mm²
Elongation % min
14



ANBAO HYDRAULIC stock roller burnished steel tube,cold drawn steel tubes, honed steel tubes.seamless DIN 2391 grade St 52 in stress relieved conditions (BK+S).we have more than 24 years experience in china market.if you have any inquiry about these products , please feel free to contact us. 

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