1·The laser cutting machines and the principle of slotted screen laser cutting are introduced briefly.
介绍了激光切割筛管的原理和割缝筛管数控激光加工机床；
2·It was described to confirm the mechanism of slotted screen liner sand control and its screen fractured width.
描述了割缝筛管防砂机理及割缝筛管筛缝宽度的确定方法，研究了割缝筛管与地层充填砂的配伍性。
3·The technology of slotted screen liner sand control used in percolation ability formation and its field test was introduced.
介绍了适用于不同渗流能力的地层的割缝筛管防砂工艺及现场应用情况。
4·The paper analyzes the causes of common quality defects in slotted screen laser cutting, and advances preventive measures against the defects.
分析了激光切割筛管过程中常见的质量缺陷及产生的原因，并提出了工艺解决方案。
5·ESS consists of expandable slotted steel tube, overlapped metal screen and expandable slotted shroud.
膨胀式防砂筛管由膨胀式割缝基管、相互重叠的金属滤网和膨胀式割缝保护套构成。