For example, using the temperature difference of seawater to generate electricity, in order to prevent seawater corrosion, the required titanium tube is expensive, if the use of titanium and other materials to replace the composite tube, the cost will be much lower.
For example, Aluminium-lined zirconium alloy tubes are used as double-layer pressure tubes in nuclear reactors, and aluminium acts as an anti-hydrogen layer to prevent the hydrogenation of zirconium alloy tubes during reactor operation.
In addition, there are Titanium-Stainless steel clad pipes for mercury in nuclear power plants and zirconium clad pipes for hydrogen and hydrogen sulfide in chemical plants. The copper-steel clad pipe with large diameter is used for the inner clad pipe of noble metal in the calorimeter, and the long clad pipe with titanium, stainless steel and nickel as inner pipes and high strength steel as outer pipes in the petrochemical industry and pressure vessels.
The above-mentioned composite pipes and long composite pipes for other purposes are usually in close contact with the outer and inner pipes and have a certain degree of bonding strength. In order to facilitate the follow-up machining and work under the conditions of thermal stress, and other external forces, so as to ensure its proper working capacity and life.
Henan Chalco manufactures long clad pipes by implosion and exterior explosion, and then draws and rolls them to obtain long clad pipes with given dimensions and tolerances. Through explosion + extrusion + rolling process, Henan Chalco has manufactured many seamless long composite pipes with different diameters in the chemical, petroleum and petrochemical industries.
Bimetal long clad pipe tube developed by Henan Chalco:
1.321 stainless steel -J555 steel bimetal long clad pipe, used as an oil pipeline. The pipe is 12m long, 200mm in diameter, 20mm in wall thickness, and 4mm in thickness of stainless steel pipe.
2. Composite copper pipes are lined with 1.5-6 mm thick copper pipes on the inner wall of 660 mm diameter and 6 m long tail steel pipes.
3. Explosive welding of carbon steel pipe and stainless steel pipe with 60.5 mm outer diameter, 4 mm wall thickness and 1000 mm long with 50 mm outer diameter, 1.5 mm wall thickness and the same length of stainless steel pipe.
4.A350-LF2 steel tube billet, inner hole 304L stainless steel detonation composite bimetal long clad pipe.
5.A182-F22 steel pipe is exploded by 347 stainless steel tube and bimetal long clad pipe.
The inner surface of the casing working under high pressure is coated with a corrosion-resistant coating, usually by explosive recombination, and is commonly used in chemical production equipment, nuclear reactors and marine installations.
