High strength cylinder pipe has high strength & tenacity, brittle fracture resistance and good weldability. S700 and S890 high strength cylinder pipes also have good hardenability and uniform performance after heat treatment. They are especially suitable for manufacturing high strength cylinders with large OD, medium & large wall thickness.
1. Production Range
OD: 42mm～760mm ; WT: 4mm～120mm
2. Standard and Steel Grade
Technical standards: GB/T 8162, GB/T 17396 or technical agreement.
3. Application Fields
High strength cylinder pipe are mainly used for hydraulic support of coal collection face, hydraulic cylinder, engineering machinery, ship lock and offshore platform etc.
Requirements for Mechanical Properties | |||||||
Steel Grade | Delivery Condition | Tensile | Yield | Elongation | R.A. | Absorbed-engergy | |
Not Less Than | |||||||
27SiMn | Quenching+Tempering | 980 | 835 | 12 | 40 | 20℃(AKU2) | 39 |
30CrMnSiA | Quenching+Tempering | 1080 | 835 | 10 | 35 | 20℃(AKU2) | 39 |
30CrMoA | Quenching+Tempering | 930 | 735 | 12 | 50 | 20℃(AKU2) | 71 |
20MnTiB | Quenching+Tempering | 1050 | 930 | 10 | 45 | 20℃(AKU2) | 50 |
S700 | Quenching+Tempering | 750 | 650 | 14 | 40 | -20℃(AKV2) | 47 |
S890 | Quenching+Tempering | 810 | 700 | 14 | 35 | -40℃(AKV2) | 60 |
