Oil Treated Precision Bearing Steel Tube , GCr15 Cold Drawn Seamless Steel Tube

GCr15 Precision Cold Drawn Seamless Bearing Steel Tube for Auto Parts

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.


1. Main Date
Material: E215, E255, C35E, C45E , E355, 26MnB5, 34MnB5, 50CrVA , SAE1026, SAE5160H, PA12, MT1010, 45# , GCr15,GCr9SiMn,PA12,100 Cr6 etc.
Diameter range:10-160mm ,
Thickness Range:1-25mm


2. Manufacturing Process


3. Main Equipment List and Capacity Analysis

4. Test
1. Selection of raw materials: Choose the best raw material--titanium sponge.
2. Advanced detection equipment:The turbine detector, Ultrasonic flaw detection & Infrared detection apparatus.
3. Test report with 3rd party.

5. Trade Information

Jiangsu Hongbao Group (Pipe) Co., Ltd. (Zhangjiagang Hongda Pipe Co., Ltd.) is a high-tech company in Jiangsu province. The company has a registered capital of RMB 89 million, covers an area of 130,000 square meters, employs 600 staff, and has annual sales of RMB 400 million. The company is specialized in producing and selling high-end bearing tubes, auto alloy tubes, titanium and titanium alloy tubes, nickel and nickel-based alloy tubes, refrigerator condenser tubes, aluminum and aluminum alloy tubes and the like.
The company focuses on the development of new products, and has successively developed high diameter-wall ratio titanium-molybdenum-nickel alloy seamless steel tubes, nuclear power plant reactor driving mechanism used martensite stainless steel seamless steel tubes, auto critical components used alloy steel tubes, high-end refrigerator used corrosion-resistance galvanized condenser tubes, marine engineering and complex environment oilfield used high-strength corrosion-resistance G3 tubes, among which, nuclear power plant reactor driving mechanism used martensite stainless steel seamless steel tube has obtained high-tech product certificate of the province.
At present, the company has obtained authorization for 7 patents for invention, and 8 patents for utility model.