Roofbolting Drill Bits

Descripción del producto

Detailed Technical Specification: Annexure -I
 Sl.No. Description Parameter
 1 STANDARDS :
 1.1 Specification standard of drill bits conforms to IS:********8
 1.2 For Tungsten Carbide Tips IS:********7
 1.3 For Brazing material IS:********5
 2.0 TECHNICAL PARAMETERS :
 2.1 Type of Drill Bits TCT Rotary Drill Bit (Type-
 A, one piece bit).
 2.2 Grade of Tungsten Carbide Tips as per IS:***5 at
 Sl.No. 2.2. Medium
 2.3 Colour code Medium -Coal Yellow
 2.4 Rake angle + 3 Deg.
 2.5 Brazing material as per ISS mentioned at Sr.No.
 2.3
 Silver copper alloy of
 classification, BA Cu Ag *2
 2.7
 (A) Guaranteed meterage for drilling by Grade \'C\'
 and superior grades in Coal **0 Meters
 (B) Guaranteed meterage for drilling by Grade \'D\'
 and below grades in Coal **0 Meters
 2.8 Nominal size of Drill Bits :
 Item No. Drilling
 Material Nominal size
 1 Coal *3 mm
 2.9 Make of Tungsten Carbide (T.C.) Tips : KT