1. Steel finned tube convection radiators should be manufactured according to approved product drawings and technical documents, and should comply with the provisions of this standard.

2. The outer cover of the steel finned tube convection radiator should be equipped with a back plate, which is hidden inside the header. The steel strip, outer cover plate, and two end protective plates should comply with relevant material standards and have a material quality certificate.

3. The ovality of the steel pipe should not exceed 0.3mm, and other items of the steel pipe should comply with the provisions of GB/T3092, GB/T3087, and GB/T8163 standards.

4. High frequency welding or other methods to ensure fastening should be used between the steel strip and the steel pipe.

5. The welding surface of steel strips and steel pipes should be free of defects and impurities that affect welding quality, such as coatings, rust, pits, etc.

6. Quality requirements for finned tubes: The pitch of the finned tubes should be between 6-7mm, the height of the fins should be greater than 15mm, the inclination angle of the fins should not exceed 80 degrees, and the straightness of the finned tubes should not exceed 1.0mm per meter. For finned tubes using high-frequency welding technology, the total actual weld length measured at each meter of finned tube should be greater than 85, and the length of non continuous welding should not exceed 50 mm.

The above mentioned are the six technical indicators for the production and manufacturing of finned tube radiators. We hope that after reading this, everyone can have a better understanding of the production and manufacturing of finned tube radiators. From the above description, it can be seen that the manufacturing of this type of radiator requires a considerable amount of process and technology. The professionals from Linyi Radiator Factory remind colleagues to strictly follow the production process during manufacturing to ensure the construction quality of each link, thereby ensuring the quality of the entire process and producing high-quality and reliable radiator products.