Groove joints are sealed by sheet steel and wrapped with canvas. This new construction technology improves anti-seepage property as well as expedite construction speed.
对地下连续墙槽段节点采用钢板封口及外包帆布的施工新工艺，提高了构造的抗渗漏性能，也加快了施工速度。
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Pulleys are on the market that permit an adjustment in the width of the groove. The effective pitch diameter of the pulley is thus varied, and moderate changes in the speed ratio can be secured.
Special Angle strengthened bit design intensifying blade protection and quickly leading powder into screw groove, which reduce resistance and improve in-aperture speed.