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The Repeatable Times of Quenching and Tempering

The Repeatable Times of Quenching and Tempering Repeated quenching is a common occurrence. If the initial quenching fails or the tempering is excessive, re-quenching or re-tempering becomes necessary. However, repeated quenching can lead to quenching

Basic Knowledge of Oil Pipes

## Basic Knowledge of Oil Pipes ### I. Basic Knowledge of Oil Pipes **1. Definitions of Special Terms Related to Oil Pipes** * **API:** An acronym for American Petroleum Institute. * **OCTG:** An acronym for

Petroleum Products Overview

Petroleum Products Overview I. Purpose Understanding Oil Product Classifications: Gain a basic understanding of how oil products are classified and a brief overview of their production processes. Interpreting Inspection Reports: Learn how to read inspection

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