Rule 36.21.642 - STEEL CASING JOINTS(1) All casing joints shall be welded or screw coupled and shall be watertight. If welded casing joints are used, the weld shall be a full penetrating weld at least equal in thickness to the wall thickness of the casing. Welded casing joints shall have a tensile strength equal to or greater than that of the casing.Mont. Admin. r. 36.21.642
NEW, 1986 MAR p. 1699, Eff. 10/17/86.37-43-202(3), MCA; IMP, 37-43-202(3), MCA;