Product ParametersDescriptionStandardDIN2391, EN10305, JIS G3445, ASTM A519, GB/T 8713...MaterialST52, E355, E355SR, STKM13C, C20, SAE1026, Q235B, CK45, S45C...Heat treatmentBK+SSpecificationOuter diameter(mm)Inner diameter(mm)40-400mm30-320I.D ToleranceH8-H9Length3-9m (Customers usually choose the ......


Product Parameters
| Description | ||
| Standard | DIN2391, EN10305, JIS G3445, ASTM A519, GB/T 8713... | |
| Material | ST52, E355, E355SR, STKM13C, C20, SAE1026, Q235B, CK45, S45C... | |
| Heat treatment | BK+S | |
| Specification | Outer diameter(mm) | Inner diameter(mm) |
| 40-400mm | 30-320 | |
| I.D Tolerance | H8-H9 | |
| Length | 3-9m (Customers usually choose the 4~5.8m) | |
| Straightness | 1/1000 | |
| ID roughness | RA 0.4micron(max) | |
| Technology | Honed & SRB(SKIVED AND ROLLER BURNISHED ) | |
| Scope | Honed tube for hydraulic cylinder, swivel crane, injection machine and | |
| construction machine application | ||









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