The results snow mat it is tiny and limited for the slags ground to influence the groundwater quality in scale and degree.
预测结果表明，新灰场对周围浅层地下水水质影响的范围和程度是有限的。
The purpose of the pipeline pigging is clear in pipe welding of mud, welding slags sundry, for pipeline caliper and normal operation of pipeline to provide security.
管线清管的目的是清除焊接时留在管道内的泥沙、焊渣等杂物，为管线测径和管线正常运行提供保障。
If the ball within the cylinder sediment, and welding slags sundry total volume in not more than 5 litre, pigging qualified.
若收球筒内泥沙、焊渣等杂物总体积不超过5升，清管合格。
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