3m collars with 2 3/8 Mayhew Junior connections and 65 mm spanner flats
Roschen Mayhew Junior thread drill pipe used high advanced alloy steel materials, friction welded sub with drill pipe body, it can afford high strong torque during drilling, special for mining drilling, water well drilling.
DTH Drilling Tools DTH Drill Pipes DTH Hammers DTH Drill Bits
DTH drill rods (also called as drill tubes or drill pipes) are the mechanism to transmit impact force and rotation torque to DTH hammers and bits, as well as offer pass for the air flow.
In principle, the lighter the rod is, the better it is for the drilling operation. So a thinner one is always preferable than a thicker one if other parameters were the same.
Product specifications:
DTH drill pipes are widely used in mining,water well drilling, geothermal, oil and all kinds of DTH rock drilling, with high quality low carbon steel to ensure good resistance to strengthen and tensile, friction welded to ensure the adapter and pipe connect tightly as a whole set the cyclic extrusion-compression ensure reliable pipe.
| DTH drill pipes specifications | ||||
| Outer diameter | Thread | |||
| Wall thickness | Length | |||
| mm | inch | mm | mm | |
| 76 | 3 | FEDP (Failing connection) Mayhew Junior Mayhew Regular API 2 3/8 REG API 2 7/8 REG API 3 1/2 REG API 4 1/2 REG API 2 3/8 IF API 2 7/8 IF API 3 1/2 IF API 4 1/2 IF BECO 3 1/2" | 4 | 1000-6000 |
| 6.3 | ||||
| 89 | 3 1/2 | 4 | 1000-6000 | |
| 6.3 | ||||
| 8.8 | ||||
| 102 | 4 | 6.3 | 4000-6000 | |
| 8.8 | ||||
| 114 | 4 1/2 | 6.3 | 4000-9000 | |
| 12.5 | ||||
| 127 | 5 | 6.3 | 4000-9000 | |
| 12.5 | ||||
| 19 | ||||
| 133 | 5 1/4 | 6.3 | 4000-9000 | |
| 12.5 | ||||
| 19 | ||||
| 140 | 5 1/2 | 8.8 | 4000-9000 | |
| 12.5 | ||||
| 19 | ||||
Introduction:
Roschen is global company, with more 50 years of experience, is one of the professional manufacturer and supplier of high performance rock drilling tools like: Tricone bits, DTH hammers and bits, RC hammers and bits, DTH drill rods and top hammer drilling tools. Our tools are widely used in different drilling applications including mining, quarrying, water well drilling, geotechnical industries and etc.
Roschen is specialized in designing, manufacturing and developing equipments and accessories for standard models as well as the special needs of clients and provides them with the best suggestions and solutions. We practice strict and stringent quality control during manufacturing and adhered to recognized and approved quality control systems. Each of our products follows the quality requirements and procedures to ensure finished products are durable and superior up to standard.
