API
Source Standard
General
API 5B-2019
套管、油管和管线管螺纹的加工、测量和检验规范 (第16版)
First Principles Analysis
1. Scope
This specification covers the threading, gauging, and thread inspection of casing, tubing, and line pipe. It covers thread forms including 8RD, 10RD, BTC, and LTC. It serves as the quality baseline for all API threaded tubular products.