Production Processes And Standards For Sanitary Welded Joints

Sanitary welded joints play a vital role in medical, food, pharmaceutical and other fields, ensuring the sanitation and reliability of equipment and systems. In order to meet high hygiene requirements, the production process and standards of sanitary welded joints need to be strictly controlled and verified. This article will introduce the production process and related standards of sanitary welded joints.

Production Process

Material selection: When producing sanitary welded joints, it is first necessary to select suitable materials, such as stainless steel, special alloys, etc. These materials are corrosion resistant and high temperature resistant, making them suitable for use in hygienic and high temperature environments.

Preparation: Before welding the joints, the cleanliness and flatness of the joint area must be ensured. Clean the joint area with a dedicated cleaner and tools to remove dirt, grease and particles.

Welding process: Sanitary welding joints usually use inert gas shielded welding (such as TIG welding) or resistance welding. These welding processes maintain the purity of the weld and surrounding materials during the welding process.

Atmosphere Control: During welding, ensure that the welding area is under proper atmosphere control to prevent oxidation and contamination. This can be achieved with inert gas protection and a vacuum environment.

Post-weld treatment: After welding, carry out necessary post-weld treatment, such as removing welding slag, grinding the weld, etc., to ensure the smoothness and flatness of the welded joint.

Related standards

Hygienic standards: Sanitary welded joints must comply with corresponding hygienic standards, such as the requirements of the FDA (U.S. Food and Drug Administration). These standards ensure that welded joints are free of toxic substances, particles and bacteria and are suitable for contact with food, pharmaceuticals, etc.

Material standards: The materials used in welded joints must comply with corresponding material standards, such as ASTM (American Society for Testing and Materials) standards. These standards ensure that the materials selected have the required corrosion resistance, mechanical properties and weldability.

Welding standards: The welding process needs to comply with relevant welding standards, such as the welding standards of ASME (American Society of Mechanical Engineers). These standards specify requirements for preparation, workmanship, inspection, etc. of welded joints.

Hygienic certification: Sanitary welded joints usually need to pass hygienic certification, such as 3-A sanitary certification, EHEDG (European Hygienic Engineering and Design Association) certification, etc. These certifications ensure that welded joints meet hygienic requirements and are suitable for specific hygienic applications.

Quality control: The production of sanitary welded joints must undergo strict quality control, including welding process monitoring, inspection and recording. These controls ensure joint consistency and quality.

In short, the production process and standards of sanitary welded joints are key factors to ensure the hygiene and reliability of equipment and systems. By choosing the right material, using the right welding process and following the relevant standards, it is possible to produce welded joints that meet high hygienic requirements and are suitable for a variety of hygienic applications.

If you are interested in sanitary welded joints, FOGO valves and pipe fittings have a wide range of sanitary joints for you to choose from. Please contact us for more information.