The ASME B16.5 standard covers pipe flanges and flanged fittings for size NPS ½ to 24. RTJ stands for Ring Type Joint, which is a type of flange facing used in high-pressure and high-temperature applications. RTJ flanges have grooves cut into their faces where metal rings are inserted. When the flange bolts are tightened, the metal rings deform to create a tight seal.
ASME B16.5 RTJ flanges have specific dimensions and tolerances for their faces, bolt holes, and overall dimensions to ensure interchangeability and proper sealing. These flanges are commonly used in industries such as oil and gas, petrochemical, and power generation where reliable sealing under extreme conditions is critical.
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