Description:The raw materials for these hydraulic steel tubes undergo precision drawing, non-oxidizing bright heat treatment (NBK condition), and non-destructive testing. The inner bores of the tubes are subjected to high-pressure flushing and pickling, while both the inner and outer surfaces are treated with rust-inhibiting oil; the tube ends are capped to prevent dust ingress. The resulting steel tubes feature high precision and excellent surface finish, with the complete absence of oxide layers on both their inner and outer walls. These tubes are capable of withstanding the high pressures associated with fluid flow; furthermore, they resist deformation during cold bending and can be flared or flattened without cracking. In terms of mechanical properties, the tubes can be bent at any angle without sustaining permanent deformation.
