DIN2391 St52 hydraulic cylinder honed tube
1. MATERIAL SPECIFICATION AND REF. DOCUMENT
ST52,BK+S,DIN2391 OR Equivalent
2. CHEMICAL COMPOSITION (%)
C (Max) Mn(Max) Si(Max) S(Max) P(Max)
0.22 1.6 0.5 0.035 0.035
3. MECHANICAL PROPERTIES
Elongation(Min) Y.S (Min.) UTS (Min.)
≥15 470 N/MM2 580 N/MM2
4. SUPPLY CONDITION
Cold drawn seamless steel tube, stress relieved and honed or skived roller burnished
5. SURFACE ROUGHNESS
Ra = 0.4~0.8Micron
6. TOLERANCES ON INNER DIA
ISO H8 H9
7.TOLERANCES ON WALL THICKNESS
≤ Dia120 +/-10 % of wall thickness
≥ Dia120 +/-10 % of wall thickness
8. STRAIGHTNESS
≤1 mm/M
9. OD TOLERANCE
≤ Dia 40 +/-0.2 mm
≥ Dia 40 ≤ Dia 100 +/-0.3mm
≥ Dia 100 +/-0.5mm
10. LENGTH AND CUT TOLERANCE
Length ≤ 500mm , +2mm
> 500mm ≤ 2000mm, +3mm
> 2000mm ≤ 5000mm, +5mm
> 2000mm ≤ 7000mm, +10mm
About factory
1.NEW SINDA STEEL PIPE CO.,LTD.is one of the biggest manufacturer about the steel pipe from china.
2.We have got two complete production line as:
-, Cold drawn from size 1/4"-5" OD pipe.
-, Hot rolled from size 6"-16" OD pipe, also we can work from size 20"-24" as hot expand pipe.
3. We have got carbon steel pipe for liquid use (ASTM A106/A53GR.B),steel pipe for casing (P-110, K55, N80 and so), steel pipe for pipeline (API5L GR.B, X42, X52, 60, X70), steel pipe for construction (high thickness of ST45, ST52).
Looking forward for a long-term and win-win coorperation.