South Eastern Coalfields Limited

South Eastern Coalfields Limited has published Supply Of Drill Rod Hexagonal 22 Mm ( As Per Enclosed Drawing ) , Drill Rod Hexagonal Type For Resin Capsule Bolting With 6 Mm Centre Hole Without Water Manifold: Size Of Drill Rod ( Diameter ) : 22 Mm , Length Of Drill Rod : 2100 Mm . Technical Specification:- ( I ) Scope : Use Of Drill Rod: In Coal Mines , ( Ii ) The Rods Shall Be Manufactured From Hexagonal Type Section , ( Iii ) Material - The Drill Rods Shall Be Manufactured From High Tensile Steel Special Steel Of Grade Min 0 . 55% Carbon With Surface Hardness 50-55 Hrc , ( Iv ) The Length Of Drill Rod As Measured Excluding Square Drive & Shank For Drill Chuck Shall Be 2100 Mm , ( V ) Diameter Of Hexagonal Rods Shall Be 22 Mm With Central Hole Of 6Mm . ( Vi ) Diameter Of Shank Shall Be 19 Mm & Length 70 Mm . ( Vii ) Accommodation Of Drill Bit - M-16 Thread Shall Be Provided At The End To Accommodate 27Mm Diameter Drill Bits With Threaded End , ( Viii ) Square Drive Adopter Of 25 Mm X 22 Mm Long Shall Be Provided For Holding The Rod In Drill Chuck , ( Ix ) Each Rod Shall Be Marked On The Shank With The Diameter Of The Rod And Manufacturers Name , Make/ Trade Mark . ( Dimensions Will Be As Per Enclosed Drawing ) . Last date of submission for this tender is 2019-10-03. This is a Drilling And Exploration Equipment tender in Baikunthpur, Chhattisgarh