groove

For the example of sheet pile wall fillistered retaining plank,the paper discussed the design, manufacturing of turnover forms,also analysed for the economical technology of forms.

以株六复线桩板墙凹槽型挡土板为例 ,阐述了翻转模板的设计、制造情况 ,并对模板的经济技术作了详细分

Development of concave mould slot roll for the steel tube rolling device;

连轧钢管机凹型槽轧辊的研制