Forged Stainless Steel ASTM A182 F316L 304L Cl150 Orifice Flange

This forged stainless steel orifice flange is manufactured strictly in accordance with ASTM A182 standard, available in F316L and F304L grades under pressure rating Class 150, complying with ASME B16.36 for orifice flange dimensions. Equipped with dedicated pressure tapping ports, it works with orifice plates to accurately measure liquid, gas and steam flow inside pipelines.

F304L delivers reliable general corrosion resistance, while molybdenum-containing F316L performs excellently against pitting and chloride corrosion; low-carbon composition avoids weld sensitisation, removing demand for post-weld heat treatment. Produced via integral forging followed by precision CNC machining, the flange features stable mechanical performance and tight sealing.

Widely adopted in petroleum, natural gas, chemical engineering, power plants and marine projects. We provide full material test certificates, third-party inspection support and customizable surface finishes to meet global industrial piping requirements.