2025-10-09 The ASME B16.9 standard, as a globally recognized authoritative specification for pipe fittings manufacturing, provides strict technical basis for key pipe fittings such as reducers. ASME B16.9 reducer that comply with this standard, with their excellent adaptability, reliability, and compatibility, have become important fittings for variable diameter connections in pipeline systems in fields such as petroleum, chemical, and energy. This article will comprehensively analyze the core advantages of ASME B16.9 reducer from standard interpretation, product parameters, category classification, manufacturing processes to application scenarios, to assist enterprises in accurately selecting suitable pipe fittings.