Би-металл износостойких двойная стенка стальная труба

twinwall steel pipe wear resistant tube compound tube Bi-metal double wall compound pipes make up of inner alloy steel tube and outer low carbon steel tube. Inner wall thickness is 2.4mm and outer wall thickness is 2mm. The specification is common φ133×4.5 or special specifications. Compound between the double wall used precision rolling way which is exclusive proprietary technology to coalescent tightly and not be sparated.Specific advantages in the follow aspects: 1.Pipe material is two different metals of inside and outside. The inner can be complete hardenability but the outer can be not hardened. The inside formed uniformity and stable hardened layer after the pipes quenched, and the consistency of rigidity can ensure wear resistant for long term. It is estimated that wear resistant capacity can be improved more than double. 2. Because dont worry about the thickness of hardened layer and only fully harden, the requirements of hardening process and quenching equipment have been lowered. Meanwhile the stability of products is also greatly enhanced. 3. The external protective layer ensured pithily that the product is not easy to rupture and bring hidden accidents. 4. Between the double wall is close and tight. Even if 300mm compound tube that use mechanical approach can not make the double wall torn off. At the time of transportation can be reduce oscillation and improve stability. The compound tube used other means of production is unable to achieve so well coalescent. 5. The products dimension is high precision. OD and ID dimensional precision can be up to ±0.1, and be able to adjust to tolerance or negative tolerance in accordance with the requirements of customers. The weight is precise and consistent. 6. Both inside and outside surface are mirror. Good surface finish is conducive to transport fluid material.