DIN/EN hydraulic precision steel tubes are manufactured according to DIN2391-C or EN10305-4 standards, and the delivery conditions are usually BK, NBK, GBK, etc. The precision Steel tubes are widely used in power transmission systems such as construction machinery, vehicle chassis pipelines, hydraulic systems, and pneumatic systems. The hydraulic are mainly divided into the following three categories:
1. DIN/EN high precision bright seamless steel pipe
The raw materials are made of high quality carbon steel materials from Baosteel or Tiangang, which have undergone acid washing, precision drawing, non oxidation bright heat treatment (NBK state), non-destructive testing, high-pressure flushing and acid washing of the inner holes of the steel pipe, rust prevention treatment of the inner and outer walls of the steel pipe with rust proof oil, and dust prevention treatment with both ends of the cover. The produced steel pipes have high precision and good smoothness. There is no oxide layer on the inner and outer walls of the steel pipes.
The steel pipes can withstand the high pressure of liquid flow, and the steel pipes do not deform during cold bending. They can be expanded, flattened, and have no cracks. Mechanical properties can be bent without deformation at any angle. Mainly used for preparing steel pipes in hydraulic system oil circuits, also known as hard piping in hydraulic systems, precision steel pipes for automobiles can meet the requirements of customers with high precision, high smoothness, tensile strength, and mechanical properties for steel pipes.
2.DIN/EN high precision precision galvanized steel pipe
High precision bright seamless steel pipes are used for electrogalvanizing, and the inner and outer walls of the steel pipes are coated with yellow zinc (color zinc), white zinc, passivation treatment, and the length of the galvanized steel pipes can be within 6 meters. Mainly used in industries such as automotive steel pipes, pipeline systems, airplanes, agricultural and forestry machinery, engineering machinery, railway vehicles, ships, etc.
3. DIN/EN high precision black phosphate steel pipe
On the basis of using DIN2391/EN10305 high-precision bright seamless steel pipe, the inner and outer walls of the bright precision steel pipe are phosphatized with a phosphated agent dilution formula, forming a black protective film on the inner and outer walls of the steel pipe to prevent rust. Black phosphated steel pipes have a shiny black surface, good color and strong rust resistance. High precision black phosphated steel pipes are mainly used for piping in hydraulic systems, as well as for ferrule (steel pipe) joints and welded steel pipe joints.
Post time: May-18-2023