The standard piperack configuration for this drill consists of a long pipe cradle that is fastened to a pair of parallelogram- type swing arms.
本钻机的标准管架配置由一个长管道托架组成,该托架被固定在两个平行四边形的旋臂上。
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The swing arms are fastened to the inside structure of the mast, and permit the piperack to be low-ered from the stored position to the centerline of the drill string.