SY/T5053. 1 ～ 2000 Blowout Preventer and Control Device, Blowout Preventer;
SY/T5127 ～ 2002 Specification for Wellhead Devices and Oil Recovery Trees;
API Spec 16A /ISO 13533 Specification for Drilling and Passing Equipment;
API Spec 16C Throttling and Pressurizing Tubing Sinks;
API Spec 6A /ISO 10423 Extraction Tree and Wellhead Devices.