This article will elaborate on the basic principles, pressure rating standards and application precautions of welded steel tubes.

This article will introduce in detail the quality control of material selection, processing and production control, construction quality control, inspection and monitoring measures, etc.

While casing couplings and tubing coupling share similarities in their threaded connections and sealing mechanisms, casing couplings and tubing couplings have distinct features, applications, and design considerations tailored to their specific functions in the well environment.

Schedule 80 galvanized pipe refers to a specific type of steel pipe that has been coated with a layer of zinc to help prevent corrosion.

While both "sch 40" and "sch 40s" refer to specific pipe schedules, the distinction lies in the materials they are designed for.

The "H40" designation in API 5CT H40 OCTG casing refers to the specific grade of steel used in manufacturing the casing.