High-carbon steel generally refers to steel with a carbon content greater than 0.6%. While heat treatment can achieve high hardness, it also results in increased brittleness.
High-strength steel has high comprehensive performance, not just high hardness. Generally, high-strength steel is alloy steel, which is steel with other metal elements added, such as manganese, chromium, nickel, etc., which can greatly improve the overall strength of the steel.

Advantages of Hot-Rolled Steel Plate: Hot-rolled steel can effectively eliminate defects, such as grain refinement. Furthermore, bubbles and cracks generated during casting can be treated at high temperatures and then welded together, avoiding these issues.

Disadvantages of Hot-Rolled Steel Plate: After hot rolling, any non-metallic materials within the steel are compressed into thin sheets, causing delamination, which can affect quality and cause unnecessary problems.

Advantages of Cold-Rolled Steel Plate: It allows for greater deformation of the steel, raising its yield point. Furthermore, the forming speed is relatively fast, resulting in higher production yields without damaging the coating.

Disadvantages of Cold-Rolled Steel Plate: During the forming process, stresses are generated in the cross-section, causing changes in the steel's properties. Furthermore, the wall thickness of cold-rolled steel is relatively small, and subsequent processing does not increase the thickness, resulting in a reduced load-bearing capacity.

TPEP anti-corrosion steel pipe is a steel composite pipe with a steel pipe as the base and a molten plastic anti-corrosion layer formed on the inner surface, outer surface, or inner and outer surfaces of the steel pipe through a specific process. Its anti-corrosion structure is a three-layer polyethylene protective layer, namely 3PE. The TPEP anti-corrosion steel pipe process adopts a three-layer structure, including a bottom anti-corrosion layer, an anti-corrosion layer and a protective layer. The function of the bottom anti-corrosion layer is to prevent the steel pipe from being oxidized and corroded, the function of the anti-corrosion layer is to improve the corrosion resistance of the steel pipe, and the protective layer is to prevent the steel pipe from being damaged.

Bottom layer: It is fused epoxy, and its main function is to form a continuous coating film, which directly bonds to the surface of the steel pipe. It has good chemical corrosion resistance and cathodic stripping resistance, and can react with the active groups of the middle layer adhesive to form chemical bonding, ensuring that the overall anti-corrosion layer has good adhesion at higher temperatures.

Middle layer: Adhesive, usually copolymer adhesive, whose main component is polyolefin, and the vinyl copolymer adhesive is widely used. Its polar functional groups can react with the epoxy groups of the fused epoxy powder coating to form hydrogen bonds or chemical bonds, so that the middle layer and the bottom layer form a good bond; and the non-polar ethylene part has a good affinity with the surface polyethylene, so the middle layer and the surface layer also have good bonding properties.

Surface layer: It is an extruded polyethylene anti-corrosion layer, which mainly plays a role of mechanical protection and anti-corrosion, and has the same effect as the traditional two-layer polyethylene anti-corrosion layer.