The surface heat treatment of seamless steel pipe is a metal heat treatment process that changes the mechanical properties of the surface layer by heating and cooling the surface of the steel pipe. Surface quenching is the main content of surface heat treatment, and its purpose is to obtain a high-hardness surface layer and favorable internal stress distribution to improve the wear resistance and fatigue resistance of steel pipes.

The annealing of seamless steel pipe is a metal heat treatment process, which refers to slowly heating the metal to a certain temperature, keeping it for a sufficient time, and then cooling it at an appropriate speed.

Stainless steel seamless steel pipes are widely used in high-pressure, low-temperature and corrosion-resistant environment piping systems. Mechanical properties, process properties and corrosion resistance are three important indicators to measure the quality of steel pipes, and are also important guarantees for safe navigation of ships. So how to avoid surface quality problems?

The insulation pipe is mainly composed of three layers, one layer is a protective shell made of high-density polyethylene or fiberglass, one layer is an insulation layer made of rigid polyurethane foam, and a layer of working steel pipes, which can be transported according to the medium. Welded steel pipes, seamless steel pipes, and double-sided submerged arc spiral steel pipes are used for different requirements.

In order to prevent seamless pipes or welded steel pipes from corroding and prolong their service life, seamless pipes and welded pipes are usually galvanized. Galvanized seamless pipes are divided into cold-galvanized seamless pipes and hot-dip seamless pipes. The former has been banned, and the latter is still recommended to be used temporarily. So what are the steps to master when installing?

Aging treatment refers to the heat treatment process in which the seamless steel pipe is subjected to solution treatment, quenched at high temperature or subjected to a certain degree of cold working deformation, and placed at a higher temperature or room temperature to maintain its shape, size, and performance over time.