surface case meaning in English
表层格
Examples
- Fill up with mud every 5 joints of casing when running surface casing
下表层套管时，每5根套管灌满一次泥浆。 - Tianjin international steeltube trade center main production main products are : stainless steel pipe , seamless pipe , high - temperature high - pressure pipe , tube chemical , mechanical structure with steel pipes and cylinder pipe , line pipe and large - diameter surface casing various material models of various series
天津国际商贸管材销售中心主要生产经营主要产品有：不锈钢管、无缝圆管、高压高温钢管、化工用管、机械构造用钢管、气瓶管、管线管、大口径表层套管各种不同材质不同型号的各种系列。