Drill Rods

Specifications The proudcts drill rods are mainly used in coal mining,metal mining,stoning and tube engineering.have approved ISO9001:2000

  Our products drill rods have approved ISO9001:2000 Quality System and inspection of National Rock Drilling   Tools Inspection Center. All the products have assured by China People Insurance Company.   1) Different sizes available        2) Tapered drill rods:   a) Raw materials: 55 SiMnMo, 95 CrMo    b) Shank size: H22 x 108mm (7/8 x 4 1/4 )   c) Taper: 7, 12   d) Length under collar (mm): 610, 1220, 1830, 2000, 2435, 2740, 3050, 3660   3) Integral drill rods:   a) Raw materials: 55 SiMnMo, 95CrMo   b) Shank sizes: i) H22 x 108mm (7/8 x 4-1/4 ) ii) H25 x 108mm (1 x 4-1/4 )   c) Length under collar (mm): 400, 800, 1200, 1600, 2000, 2400, 3200, 4000, 4800   d) Bit diameter (mm): 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41