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Cold Drawn ST52 honed tube for hydraulic cylinder industry DIN2391 En10305
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Cold Drawn ST52 honed tube for hydraulic cylinder industry DIN2391 En10305

Cold Drawn ST52
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Description

? ? Quick Details
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Type: | honed tube | Brand Name: | HT | Place of Origin: | Jiangsu China (Mainland) |
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Packaging & Delivery
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Packaging Detail: | Nude packed. Oiled and capped in both ends |
Delivery Detail: | 25 days |
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Specifications
1 OD32-500mm W.T.3.5-80mm?
2 ISO certificated DIN2391 En10305?
3 Straightness:0.3~1mm/m?
4 Inside Roughness:0.4~0.8um

steel pipes for hydraulic use

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Material: C20, CK45, etc. also ST52 if given enough time. our products are widely used in hydraulic industry and is very popular both home and abroad.

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And we can also make our products according to the customers& acute; needs.

Variety

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Processing ? | Cylinder diameter | Length /mm | Straightness | Size accuracy | Wall thickness/mm | Inner bore roughness |
Cold-drawn | ID30~OD250 | ≤13M | 0.3~1.0mm/m | ?H9-H11 | ±8% | 0.8~1.6um |
Honed tube | ID50~OD325 | ≤10M | 0.3~1.0mm/m | H7-H9 | ±8% | 0.4~0.8um |
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?Mechanics performance

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Material | Tensile strength | Yield strength | Elongation ? | Hardness |
Ck20 | 510 σ N/mm2 | 500σsN/mm2 | 5δs% | 175HB |
Ck45 | 660 σN/mm2 | 630σsN/ mm2 | 4δs% | 207HB |
ST52 | 580σ N/mm2 | 420σsN/ mm2 | 10δs% | 190HB |
27SiMn | 840σ N/mm2 | 805σsN/ mm2 | 7.5δs% | 230HB |
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Dimension?tolerance

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ID size | ID deviation (mm) |
H7 | H8 | H9 | H10 |
30 | +0.021 0 | +0.033 0 | +0.052 0 | +0.084 0 |
>30~50 | +0.025 0 | +0.039 0 | +0.062 0 | +0.100 0 |
>50~80 | +0.030 0 | +0.046 0 | +0.074 0 | +0.120 0 |
>80~120 | +0.035 0 | +0.054 0 | +0.087 0 | +0.140 0 |
>120~180 | +0.040 0 ? | +0.063 0 | +0.100 0 | +0.160 0 |
>180~250 | +0.046 0 | +0.072 0 | +0.115 0 | +0.185 0 |
>250~315 | +0.052 0 | +0.081 0 | +0.130 0 | +0.210 0 |
>315~400 | +0.0527 0 | +0.089 0 | +0.140 0 | +0.230 0 ? |
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