API 4A : 16ED 67 SUPP 1
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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 STEEL DERRICKS (INCLUDING STANDARD RIGS)
23-07-2013
12-01-2013
Describes steel derricks and steel substructures, including stipulations on materials, design features, loadings, and allowable stresses. recommended practices on the erection, care, and use of steel derricks are included.
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