The surface quality of angle steel is specified in the standard. Generally, there must be no harmful defects in use, such as delamination, crusting, cracks, etc.
The allowable range of angle geometry deviation is also specified in the standard, generally including the degree of curvature, side width, edge thickness, apex angle, theoretical weight, etc., and specifies that the angle steel must not have significant torsion.
Casing shoes are mostly used for drilling holes in drilling operations. They are useful for fixing when the load is too heavy and difficult to locate in the drilling, which can make the drilling work go smoothly. The human pregnancy casing shoes we produce are suitable for very hard For cracks, loose or broken rock formations, we can produce a full range of casing shoes with standard sizes of carcass hardness and impregnation height to meet the requirements of different customers.
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