Tender for Supply Of Outer Drill Tube Type 55 Dia 42.5 X 32mm Total Length 1720 Mm (outer Tube) With 4 Start Internal Thr , Inner Tube Type 55 Dia 30x28 Mm Total Length 1750 Mm (inner Tube) With Ejector Slots For Precihole D , Type 45 Drill Tube Dia 17 X 2500 Mm Oal Thread On Both End To Drill Head Dia 19.4mm in Thiruvarur - Tamil Nadu

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