The production process of high-pressure boiler tubes usually includes the following main steps:

Raw material preparation: Firstly, select appropriate steel or alloy as the raw material. These raw materials are usually provided in the form of steel billets (or steel tube billets), and their chemical composition and dimensions must comply with standards and requirements.

Perforation: The steel billet is perforated through a piercing machine, transforming it into a hollow tubular structure, forming the initial shape of a seamless tube.

Heating of the blank tube: The blank tube needs to be heated through a heating furnace to improve its plasticity for further processing.

Extrusion or rolling: The blank tube is formed into the final shape of a seamless tube by gradually reducing the outer diameter and wall thickness through an extrusion or rolling machine. This step requires a high degree of control to ensure that the size and quality of the pipeline meet the specification requirements.

Annealing: Annealing is an important heat treatment step that eliminates residual stress and improves the mechanical properties and toughness of pipelines by annealing them at high temperatures.

Pickling or pickling oil grinding: Conduct pickling treatment on pipelines to remove oxides, or perform pickling oil grinding to improve surface quality. This helps to reduce corrosion and improve the surface smoothness of pipelines.

Cold drawing or cold drawing: Use a cold drawing machine or cold drawing machine to stretch the pipeline to further reduce size, improve surface quality, and ensure accurate size of the pipeline.

Cutting and sizing: Cut the pipeline to the required length to meet the specification requirements.

Mechanical performance testing: The high-pressure boiler tube manufacturer conducts mechanical performance tests on the pipeline, including tensile, hardness, and impact tests, to ensure that its performance meets the standards.

Testing and quality control: Conduct various tests, including visual inspection, dimensional measurement, non-destructive testing, and chemical composition analysis, to ensure the quality of the pipeline.

Surface treatment: To treat the surface of pipelines to improve their anti-corrosion performance, such as galvanizing, spraying, or other anti-corrosion methods.

Packaging and Protection: Properly package and protect pipelines to avoid damage during transportation and storage.

The production process of high-pressure boiler tubes requires strict quality control and operations that comply with international standards. Any improper operation at any step may affect the quality and performance of the pipeline, therefore accurate production processes and quality testing are required.