Assemble drill to break through the first layer of crust, the crew deploys a steel pipe with an 11-inch-wide drill bit at the bottom.
为了突破第一层地壳，船员们使用底部装有11英寸宽的钻头的钢管。
2
That in turn went in another layer of end cap and pipe with the gap filled with water and frozen.
这反过来去，在另一层端盖和管道输送的石油与差距灌满水和冻结。
3
Stainless steel tube surface after sand blasting become rough and very evenly, can enhance the paint adhesion layer on the surface of stainless steel pipe.