SHANGHAI UNITE STEEL
One-stop Brand Service Provider For Globle Machinery And Petrochemical Enterprise And Special Steel Distributor.
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| Honed Tube for Hydraulic Cylinder | |
| Material: | ST52, CK45, 4140, STKM 13C, SAE1020, E355, A106B, Stainless Steel 304/316, Duplex 2205,etc. |
| Delivery Condition: | BK, BK+S, GBK, NBK |
| ID: | 20mm - 1500mm |
| Length: | max 13m |
| Type: | Seamless, Cold Drawn |
| Straightness: | ≤ 0.5/1000 |
| Roughness: | 0.2-0.4 u |
| Tolerance EXT: | DIN2391, EN10305, GB/T 1619 |
| Tolerance INT: | H7, H8, H9 |
| Protection: | anti-rust oil on inside and outside surface, plastic caps in both ends. |
| Packing: | bundle with steel strip and knitting strip, or wooden case. |
| Steel Grade | Chemical composition % | ||||||
| C | Si | Mn | P | S | Al | ||
| ≤ | ≥ | ||||||
| 20# | 0.17-0.24 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | / | |
| 45# | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | / | |
| Q345B | ≤0.2 | ≤0.5 | 1.00-1.60 | 0.03 | 0.03 | / | |
| Q345D | ≤0.2 | ≤0.5 | 1.00-1.60 | 0.03 | 0.03 | 0.015 | |
| 25Mn | 0.22-0.29 | 0.17-0.37 | 0.70-1.00 | 0.035 | 0.035 | / | |
| 27SiMn | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 | 0.035 | 0.035 | / | |
| ST52 | ≤0.22 | ≤0.55 | ≤1.6 | 0.025 | 0.025 | / | |
| SAE1026 | 0.22-0.28 | 0.15-0.35 | 0.60-0.90 | 0.04 | 0.05 | / | |
| Delivery Condition | cold finished (hard) (BK) | cold drawn and stress-relieved (BK+S) | ||||
| Steel Grade | Tensile Strength (Mpa) | Elongation (%) | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) | |
| 20# | ≥550 | ≥8 | ≥520 | ≥375 | ≥15 | |
| 45# | ≥640 | ≥5 | ≥600 | ≥520 | ≥10 | |
| 16Mn | ≥640 | ≥5 | ≥600 | ≥520 | ≥14 | |
| 25Mn | ≥640 | ≥5 | ≥600 | ≥510 | ≥15 | |
| 27SiMn | ≥800 | ≥5 | ≥760 | ≥610 | ≥10 | |
| ST52 | ≥640 | ≥5 | ≥600 | ≥520 | ≥14 | |
| SAE1026 | ≥640 | ≥5 | ≥600 | ≥510 | ≥15 | |
Main producing equipments:
Cold Drawing Machine Honing Machine Straightening Machine
Skving & Roller Burnishing Machine Polishing Machine
Heat Treatment Furnace
Main test equipments:
Universal Testing Machine Impact Testing Machine
Chemical Components Testing Machine
Dimension Inspect Micrometer
Please feel free to contact us again if you have any further questions. We look forward to receiving an order from you.