Reference Materials

Browse our collection of reference materials for information on pipe thicknesses, pressure classes, flange specs, and how to obtain your MTR.

Pipe Chart Pipe Chart W/ID Flange Bolting Flange Face Imperfections API Valve Trim Chart Forged Steel-Nipple Correlation NPS-DN and Class-PN High Yield Info Materials Chart Pressure Classes Flange Specs RGA Policy MTR Guide Supplier Code of Conduct

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