Carbon steel pipe fittings production process is similar to carbon steel tube.
The pipe materials is used primarily for pipe, process, and bars, the shape of the blank to select the cutting method based on the material properties and product. Blank shape, size and other requirements according to different process requirements.
② Forming (welding)
For all pipe manufacturing process, the steel pipe cross-section is an indispensable process. Due to the forming process of the different products is different, you need a longer length.
③ Heat treatment
The heat treatment process is an important part of the pipe manufacturing. Heat treatment step of heating, insulation and cooling, eliminating the forming process of hardening, residual stress and deformation defects of metal pipe after forming the metal structure, performance of a steel pipe network, restored to the state or its performance in the deformation processing will be improved.
④ Surface treatment
Welded steel pipe
surface treatment is usually by sandblasting, shot blasting, grinding, pickling method to remove the product surface rust, scratches and other products to achieve a smooth surface to meet the follow-up processing, and inspection requirements.
Cutting pipe, soldering end, structural size, geometric tolerance machining processes. Also includes some pipe cutting, the diameter of processing. The cutting machine is mainly via a dedicated machine or universal; oversized pipe, when the existing machine capacity can not meet the processing requirements, you can also use other methods to complete processing, such as large diameter elbow with gas cutting, grinding method.
⑥ Non-destructive testing
Non-destructive testing is an important process of the possible defects of the test materials and fittings processing. The majority of pipe product standards for the requirements of the non-destructive testing requirements, but requirements are not consistent. In addition to meeting the product standards and ordering requirements, nondestructive testing, more stringent on quality control factory to develop non-destructive testing requirements according to the materials, processes, and internal quality control requirements in order to ensure the quality of manufactured products.