General small-diameter pipe elbow, more than the standard production by the plant site produced without forming elbows.
而一般小口径管道弯头，多由工厂按标准生产成形弯头不用现场制作。
The simulation experiments proved that it is a desirable tractive device for the inspecting system of small diameter pipe.
实验证明这种机器人适合作小直径管道检测系统的理想牵引装置。
The defects will be found in the seam side with ultrasonic inspection but hardly found with X ray inspection as the small diameter spiral pipe production with the split strip steel.
采用纵剪带钢生产小口径螺旋焊管时，超声波检验经常在焊缝的一侧发现缺陷波，而X射线拍片检验却很难发现。
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