| http://www.w3.org/ns/prov#value | - For example, instead of key nuts, a bar, angle, channel member, or other member could be used to set the inside circumference.Preparing the First Ring Shell Plates As seen in FIG. 4, six vertical seam key nuts [70] are tack-welded to the surface of each first ring shell plate [60] prior to placement of the plate on the tank bottom [12].
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