What is thick wall steel pipe?
The steel pipe with the ratio of the outer diameter of the steel pipe to the wall thickness is less than 20 is called the thick wall steel pipe.
Application of thick-walled seamless steel pipe:
Mainly used as petroleum geological drilling pipe, cracking pipe for petrochemical industry, boiler pipe, bearing pipe and structural steel pipe for automobile, tractor, aviation, etc.
Manufacturing process of thick-walled seamless steel pipe:
Hot rolling (extruded seamless steel pipe): round tube billet → heating → perforation → three-roll cross-rolling, continuous rolling or extrusion → pipe removal → sizing (or diameter reduction) → cooling → straightening → hydraulic test (or flaw detection)→marking→warehousing
Thick wall seamless steel pipe has been widely used in pipelines in recent years, such as the mass transportation of some liquids with high viscosity, etc.. So what excellent performance is reflected in the application process of thick-walled seamless steel pipe?
1) Very high wear resistance performance:
Thick-walled seamless steel pipe wear layer thickness 3-12mm, wear layer hardness can reach HRC58-62, wear resistance is more than 15-20 times of ordinary steel plate, low alloy steel plate performance 5-10 times more, high chromium cast iron wear resistance 2-5 times more, wear resistance is much higher than spray welding and thermal spraying and other methods.
2) Better impact performance:
Heavy Wallthickness Steel Pipe is a double-layer metal structure, and the metallurgical combination between the wear-resistant layer and the base material, with high bonding strength, can absorb energy in the process of being impacted, and the wear-resistant layer will not fall off, so it can be applied to the working conditions with strong vibration and impact, which is inferior to the cast wear-resistant materials and ceramic materials.
3) Good temperature resistance performance:
Thick-walled seamless steel tube alloy carbide has strong stability performance under high temperature, wear-resistant steel plate can be used within 500℃, other special requirements temperature can be customized production, can meet the conditions of use within 1200℃; ceramic, polyurethane, polymer materials, etc. take paste way wear-resistant materials can not meet such high temperature requirements.
4) Good processing performance:
Can be processed into seamless pipes of different sizes as required, and can be processed, cold-formed, welded, bent, etc., which is convenient to use; can be assembled and formed on site, which makes maintenance and replacement work time-saving and convenient and greatly reduces work intensity.
5) Very good sex-price ratio:
The price of thick-walled seamless steel pipe is increased compared with ordinary materials, but considering the service life of the product, the performance-to-price ratio is much higher than that of ordinary steel plates and other materials, taking into account the maintenance cost, spare parts cost and downtime loss.
Post time: Mar-15-2024