Pressure Rating Pdf !link! - Module 3 Process Piping Hydraulics Sizing And

): Converts a fitting's resistance into an equivalent length of straight pipe, which is added directly to in the Darcy-Weisbach equation. 4. Pressure Rating and Wall Thickness Determination

= Mill manufacturing tolerance. For standard seamless steel pipes, manufacturers are allowed a wall thickness tolerance of -12.5% ( Flange Ratings and Pressure-Temperature (P-T) Ratings ): Converts a fitting's resistance into an equivalent

= Total allowances, including the (typically 1.5 mm to 3.0 mm) and any thread/groove depths. Tolcap T o l ): Converts a fitting's resistance into an equivalent