GB/T 19830-2023 Active

This document describes the manufacturing methods of steel pipes (casing, tubing, and short sections), rough-out fittings, fitting materials, and accessory materials. It specifies the material requirements, dimensions, quality, and product ends of steel pipes, rough-out fittings, fitting materials, and accessory materials, as well as inspection and testing, marking, coating and protection, documentation, and minimum requirements for various manufacturer's equipment configurations. Upon agreement between the buyer and the manufacturer, this document is also applicable to flat-end pipes of other specifications and wall thicknesses. This document applies to the following joints: -- Short round threaded casing (SC); -- Long round threaded casing (LC); -- Beveled trapezoidal threaded casing (BC); -- Non-thickened tubing (NU); -- Externally thickened tubing (EU); -- Integral joint tubing (IJ).