Corrosion resistance and process specification of sanitary pipe fittings

With the development of ceramic technology of materials and technology, the toughness of sanitary pipe fittings has been greatly improved gradually. As a continuous expansion of the scope of application, new ceramic materials, as a chemical industry above petroleum, are very active in related fields. Use some of its own wear resistance to equip parts with substitute metals.

The corrosion resistance of stainless steel sanitary pipe fittings depends on the alloy elements contained in the steel. Chromium is the basic element for stainless steel to obtain corrosion resistance. When the chromium content in the steel reaches about 1.2%, the chromium reacts with the oxygen in the corrosion medium to form a very thin oxide film (self passivation film) on the steel surface, which can prevent the steel substrate from further corrosion. In addition to chromium, commonly used alloy elements include nickel, molybdenum, titanium, niobium, copper, nitrogen, etc., to meet the requirements of various uses for stainless steel structure and properties.

Process specification for sanitary pipe fittings

Formulate process procedures to provide complete, unified and clear process documents; The process equipment with reasonable design and manufacturing structure, convenient use and reliable quality ensures that the process has a high replication capacity. While strengthening the preparation of production process technology, pay attention to the revision and improvement of process technology. When the production process and production rhythm of sanitary pipe fittings and three piece ball valves change, the production process technical requirements should be revised in time. The production process technicians shall also or participate in the process design and revision work to form an integrated management from process formulation, process implementation to process revision.