boring and inserting sleeve method 扩孔镶套法

sleeve valve tube grouting method 袖阀管灌浆法

sleeve grouting method 套筒灌浆法

sleeve insertion method 镶套法

sleeve fracturing method 套筒致裂法

steel sleeve grouting method 套钢管灌浆法

sleeve piece fracture method 套筒致裂法

Method of Measuring Sleeve 袖各部位尺寸的度法

method of inserting sleeve 镶套法