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The program-controlled processes for manufacturing pressure vessels include: drawing review -- technical briefing and vessel layout -- material re-inspection and marking transfer -- cutting and alignment -- welding, test plate welding and physical/chemical testing -- non-destructive testing -- heat treatment -- pressure testing -- final product inspection. Drawing review ⑴: Check whether the design unit has the necessary design qualifications ； ⑵Check whether the main parameters of the pressure vessels in the drawings comply with **regulatory and standard requirements ； ⑶Check whether the dimension markings in the drawings are present or not ； ⑷Whether dimension and material changes are required. Technical instructions ⑴: Technical instructions are provided based on the manufacturing challenges identified during the review of the drawings, as well as the points that require special attention during the manufacturing process, in order to avoid errors and resulting waste ； ⑵The positions of the weld seams on the container are arranged according to the hole locations indicated on the sheets and drawings, in compliance with **standards and relevant regulatory requirements. For example: regulations and standards such as the Code of Practice and Pressure Vessels. Material re-inspection, label transfer ⑴: Check whether the surface quality of the materials supplied by the vendor meets the requirements, and also verify that the material quality certificates comply with relevant regulations and standard requirements ； ⑵, determine whether the chemical composition and mechanical properties of the material meet the standard requirements ； The steel used for pressure vessels emphasizes three performance criteria: strength, plasticity, and toughness ； ⑶It is mainly to facilitate the traceability of material use. According to the manufacturing and inspection provisions of GB150.4, the material must have its markings transferred. Check whether the layout of the welds for inspecting the head, the depth of the head after pressing, and the degree of ellipticity meet the standard requirements ； ⑵Check whether the specific dimensions of the cylinder shell and the shape of the groove are determined in accordance with the drawings and layout plans ； ⑶Inspect the winding cylinder to ensure its roundness meets the standard requirements ； ⑷While ensuring roundness, the components are aligned according to the layout diagram so that their misalignment values meet the standard requirements. The placement of welds is also determined based on this layout diagram. The quality of alignment is a prerequisite for successful welding; it affects whether the stress on the joint can reach an optimal level, that is, maximum balance. Therefore, accurate alignment is extremely important. ⑸Check whether the straightness tolerance meets the standard requirements. Welding, test plate welding, and physical and chemical test welding are the most important steps in pressure vessel manufacturing; they determine the safety of such vessels, which is why controlling the welding process is particularly crucial. ⑴Based on the container material, welding procedure qualifications are developed in accordance with relevant standards to determine appropriate welding parameters ； ⑵Qualified welders are selected based on the welding process to carry out the welding work ； Control the welding environment. ⑶Control the excess height of the weld, the length of undercut, and the height of the weld corners to meet the requirements of the process evaluation ； ⑷Physical and chemical tests are conducted on the fabricated welding test plates to evaluate the welding properties as well as the weldability of the steel plates. Non-destructive testing ⑴: Personnel involved in non-destructive testing undergo training provided by the relevant departments and work with valid certificates ； ⑵Ensure that the welded joint meets the requirements of the drawings and relevant standards through testing methods. Heat treatment involves treating the equipment using specialized large-scale heat treatment equipment. The basis for inspection is the heat treatment curve. Voltage withstanding test ⑴: Select a pressure gauge that meets the standard requirements and has passed inspection, and ensure that its measurement range is adequate ； ⑵The temperature of the test medium and the ambient temperature during the voltage withstand test meet the requirements of ** standards ； ⑶After the pressure test is confirmed to be successful by the manufacturing inspectors, it is reported to the personnel from the quality and technical supervision department for on-site inspection; if it meets the requirements for a successful pressure test for pressure vessels, then the test is deemed successful. Final inspection of the product: Once the product has been fully manufactured, it undergoes rust removal, painting, and packaging, in compliance with the requirements specified in JB/T4711-2003 \"Coating, Packaging, and Transportation of Pressure Vessels\".