Jiangsu Hongbao Group Co., Ltd.
Jiangsu Hongbao Group Co., Ltd. Manufacture since 1958
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Bearing Steel Tube Material GCr15 100Cr6,SKF3,SKF3S Seamless Steel Tube
Material: GCr15 100Cr6,SKF3,SKF3S
Diameter range:10-160mm
Thickness Range:1-25mm
1. Introduction
Bearing steel pipe is the seamless steel tube for hot rolling or cold rolling (cold drawing) for the manufacture of ordinary rolling bearing ring. The outer diameter of the steel tube is 25-180 mm, and the wall thickness is 3.5-20mm, which is divided into ordinary precision and high precision. Bearing steel is used for making ball bearings, roller bearings and bearing rings. Bearing is under great pressure and friction, so the bearing steel is required to have high and uniform hardness and wear resistance, and high elastic limit. On the uniformity of the chemical composition of bearing steel, the content and distribution of non-metallic inclusions are very demanding, the distribution of the carbide, etc, are all steel production in one of the most demanding steel grade.
2. Delivery Condition
3. Application
In addition to ball bearings, bearing rings, sometimes used to make tools, such as punch, measuring tools.
4. Main Equipments List and Capacity Analysis
| Status | Main Equipment List | Quantity (Line) | Capa per Shift | Shift per Day | Working days per month | Actual Capacity |
| Current | Piercing Mill ∮50-∮120 | 5 | 25T/S | 2 Shifts | 22 Days | 66000T/Y |
| Rolling Mill ∮40-∮180 | 50 | 1.25T/S | 2 Shifts | 22 Days | 33000T/Y | |
| 60T 3 Lines of High Precision Drawing Machine | 1 | 15T/S | 2 Shifts | 22 Days | 7920T/Y | |
| Drawing Machine 10T-150T | 10 | 3.5T/S | 2 Shifts | 22 Days | 18480T/Y | |
| Straightening Machine ∮30-∮130 | 7 | 16.5T/S | 2 Shifts | 22 Days | 60984T/Y | |
| Heating Furnace | 4 | 26T/S | 2 Shifts | 22 Days | 54900T/Y | |
| Eddy Current Detector | 3 | 33T/S | 2 Shifts | 22 Days | 52272T/Y | |
| Ultrasonic Detector | 1 | 10T/S | 2 Shifts | 22 Days | 5280T/Y | |
| Ultrasonic & Eddy Current Detector | 1 | 25T/S | 2 Shifts | 22 Days | 13200T/Y | |
| Automatic Pickling Equipment | 1 | 115T/S | 2 Shifts | 22 Days | 60720T/Y | |
| 60 Welding Line | 1 | 25T/S | 2 Shifts | 22 Days | 13200T/Y | |
| Head Shrinked Machine | 1 | 25T/S | 2 Shifts | 22 Days | 13200T/Y | |
| 85m Roller Hearth Bright Normalizing(Annealing) Furance | 1 | 48T/D | 2 Shifts | 22 Days | 12672T/Y | |
| Subtotal
| 59400T/Y | |||||
| Project in progress
| SG/76 Strengthen Precision High Frequency Welding Line | 1 | 65T/D | 2 Shifts | 22 Days | 17160T/Y |
| 14 Roller Precision Straightening Machine | 2 | 25T/S | 2 Shifts | 22 Days | 13200T/Y | |
| 60T 3 Lines of High Precision Drawing Machine | 1 | 30T/D | 2 Shifts | 22 Days | 7920T/Y |
5. Picture
