API 4E : 3ED 88
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
SPECIFICATION FOR DRILLING AND WELL SERVICING STRUCTURES
23-07-2013
12-01-2013
Outlines steel derricks, portable masts, and substructures that shall be defined as structures suitable for drilling or well servicing. Includes stipulations of materials, loadings, conditions of loading, allowable unit stresses, workmanship and finish, marking and information, inspection and rejection. Recommended practices for maintenance and use of drilling and well servicing structures are included. Also gives detailed appendices.
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