Mandrel bars are essential tools for many industries, and they play an important role in helping manufacturers create high-quality products. They are used to ensure the uniformity and accuracy of industrial pipes, tubes, and other metal products, and they help reduce waste and improve efficiency in the manufacturing process.
Introduction
Mandrel is one of the most important tools to produce large-diameter seamless steel pipe in modern tech.Because of the poor circumstance of the rolling process of seamless steel pipe,mandrel in the rolling process has to withstand large and complex stretching, high temperature thermal fatigue stress, so the requirements of the chemical composition, mechanical properties, non-metallic inclusions, grain size, microstructure, ultrasonic testing, dimensional accuracy, roughness etc is crucial. We mainly use H13 (4Cr5MoSiV1) material,mandrel quality and service life have reached the international advanced level of similar products, with an annual capacity of 15,000 tons. If you are interested in our mandrel productions, please feel free to contact thanks.
Technical data
Specifications | Tensile strength σb (MPa) | Yield strength σ0.2 (MPa) | Elongation rate δ5 (MPa) | Facial shrinkage Ψ (%) | Average impact energy Akv (J) | Hardness HB |
≤200mm | 1127-1274 | ≥931 | ≥8 | ≥25 | ≥20 | 350-390 |
＞200mm | 1078-1274 | ≥882 | ≥8 | ≥25 | ≥20 | 330-375 |
Our advantage：
1. Advanced equipment: We have a batch of professional production equipment to ensure mandrel bar production efficiency and product quality.
2. Quality assurance: We have a strict quality monitoring team to ensure that each mandrel bar meets quality standards.
3. Fast delivery time: We have a professional order team to ensure fast response and delivery time.
4. Teamwork: Our team members help each other and work closely together to ensure that all products are delivered to customers in the best condition.
5. High customer satisfaction: We value customer feedback and conduct regular surveys to understand customer needs and continuously improve our service level.
