3 1/2 API DTH Drill Pipe For Mining And Stone Quarrying
3 1/2 API DTH Drill Pipe for mining and stone quarryingProduct Information1.Type: Drill Pipe2.Material:42CrMo73.Brand Name:KAIYU4.Use: Welling Drilling5.Thread type: 3 1/2" REG6.Machine Type: Drilling Tool7.Certification: ISO9001 ,Website:, API8.Processing Type: Forging9.Packing Details: bundles, thread protectors on pin and box10:Delivery time: Within 15days after the payment.Product DescriptionDrill pipes that are used in applications such as DTH/ DTHR/ DR basically comprise of a steel tube with a pin at one end and a box on the other. The job of the drill pipe is to transmit rotational torque and thrust from the drill rig rotary head to down hole drilling tools. DTH drill tubes are used for connecting DTH hammer and DTH button bits; they are made from seamless tubes. According to different application, different diameters of drill tubes are needed, basically, smaller DTH hammers need smaller DTH drill tubes, vice avers. Usually we are offering 50mm, 60mm, 76mm, 89mm, etc. ALL DTH drill tubes are friction welded, and usually the threads are standard API connections,like23/8" API REG thread, 3 1/2" API REG thread or API IF thread, etc.According to customers request, from 1000mm to 5000mm length of tubes are availableThread Pin/Box wall thickness(mm) Length(mm) Diameter(mm) Wrench flats(mm) 3 1/2" API REG6. 1/2" API REG6. 1/2" API REG6. 1/2" API REG6. 1/2" API REG6. 1/2" API REG6.5600011495FeaturesDTH Drill pipe is made of qualified material tested by spectroscope, impact and strain test. With completely digitized preparing line bought from Italy, with indispensable heat treatment system, the API thread goes under nitrogen treatment on surface, making it easy to handle.Metal-lography detection, hardness test, magna-flux investigation, ultrasonic imperfection identification, tension test and effect test guarantee the quality of goods. The keys make a high quality. DTH pipe are of strength, exactness.Advantage1.applicable hard, extreme hard and medium soft rock configurations. 2.Reliable quality, long life, few abnormal breakage during operation. 3.Good flushing impact to guarantee high boring rate. 4.Strict quality guarantee and compensation rules.
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