twist drill pipe/spiral drill pipes

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Specifications twist drill pipe/spiral drill pipes 1.OEM manufacturer 2. ISO9001 3.High Manganese Steel 4.sample is free twist drill pipe/spiral drill pipes 1.About Us We are a professional manufacturer specialized in series of drill tools: PDC, PDC drill bits, diamond drill bits, etc. We can also produce other products according to the customers requirements. We sincerely welcome our friend both home and abroad to come for business talks. 2.introductions and features of twist drill pipe/spiral drill pipes : 1.Spiral drill pipes Design feature: overlay spiral. It guarantees big torque, quick slagging, and clear hole forming. Besides, the drill bit will hardly get stuck. Application: soft coal bed, and other formation similar to coal bed. 2.The tapered drill rod is used for rock drilling, blasting holes and other drilling works in the quarries, coal mines, traffic and other constructions. Generally, the lightduty rock drill uses 7 taper or smaller taper angle, the heavyduty rock drill mainly uses 12 taper angle. 3. twist drill pipe/spiral drill pipes specifications Specifications( mm) Craft Connection type with drilling machine Dia. Length Thread type 50-42 500~1500 Taper thread Friction welding clamp 63.5-42 500~1500 Taper thread Friction welding clamp 63.5-50 500~1500 Taper thread Friction welding clamp 73-50 500~1500 Taper thread Friction welding clamp 73-63.5 500~1500 Taper thread Friction welding clamp 90-63.5 500~1500 Taper thread Friction welding Match active drill rod 98-73 500~1500 Hex. Shank Friction welding Match active drill rod 110-63.5 500~1500 Taper thread Friction welding Match active drill rod 130-63.5 500~1500 Taper thread Friction welding Match active drill rod 146-73 500~1500 Taper thread Friction welding Match active drill rod

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Jining Bafang Mining Machinery Co., Ltd

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