The design conforms to the API Spec 6A cross.
The seals surface is welded with stainless steel to improve. The anti-corrosive capability, and lengthen its lifespan.
The strength of the body is strictly inspected according to the API 6A before delivery to ensure safety.

It is applicable to drilling works in the high pressure oilfields.
It can throttle and control blowout if it is connects with relevant valves and pipelines. Meanwhile, it links the blow-out preventer and casing head.
High level.