dh75

... 3. Fast delivery Impregnated Single Pipe Diamond Core Drill Bit (DH75).....................................................................................................................................................................................................The impregnated diamond bits are the most commonly useful bits ... the samples or drawings. Impregnated Single Pipe Core Drill Bit (DH75)

Comply with the technical standard of API 8C.7K alloy steel model two surface hardening process Comply with the technical standard of API 8C.7K, and awarded the national manufacture license.Select the superior quality of alloy steel model.Strength of the school box with ABAQUS finite element analysis, and electric stress test method. Using two surface hardening process.Major technical parameters ...