API Spec 17D
API Spec 17D
Design and Operation of Subsea Production Systems-Subsea Wellhead and Tree Equipment, Second Edition; ISO 13628-4 (Identical), Design and operation of subsea production systems-Part 4: Subsea wellhead and tree equipment, Includes Errata 1,2,3,4,5,6, and Addendum 1 (2015)
standard by American Petroleum Institute, 05/01/2011