Derrick
1.The derrick is manufactured in compliance with AWS D1.1 and inspected by ABS.
2.The derrick is designed to API Spec

DERRICKS

COSL/DNS derrick is a kind of large-scale one manufactured by the Company for CNPC and is applicable for offshore platform rig with depth of 9000m.

I. The derrick is manufactured in compliance with AWS D1.1 and inspected by ABS.

II. The derrick is designed to API Spec 4F and API monogram can be used on it