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| Place of Origin | CHINA |
| Brand Name | ROSCHEN |
| Certification | ISO |
| Model Number | 2-3/8" 2-7/8" 3½ 4½ 2-3/8" 2-7/8" 3½ 2-3/8" 2-3/8" 2-7/8" 2-3/8" 2-7/8" 2-3/8" 2-3/8" 2-7/8" 3½ 111/16 |
Mayhew Junior Friction Welded Drill Rod 2 - 7/8" 10 feet Length Shoulder to shoulder with 2 - 3/8" Regular Thread Pin & Box
Mayhew Junior Friction Welded Rod 2 - 7/8" Shoulder 79mm 2 - 3/8" REG
Roschen manufactures drill pipe and accessories for water well, geothermal, seismograph, and mining applications. Our team provides over 50 years of experience in the machine shop and the drilling pad. At Roschen, we are capable of fulfilling all your drill pipe needs. Any order quantity, any pipe size-our team will competently, professionally, and timely meet your needs. Our lead time is faster than our competition, and our quality control process ensures a consistent, high-quality product.
Mayhew Junior Rods
We manufacture drill rods from seamless tubing and hardened & tempered alloy steel tool joints.
All our tool joints are pre-machined and heat treated before final machining to ensure accuracy.
All threads are gauged to international standards to ensure interchangebility on existing rods irrespective of supplier.
We manufacture a wide variety of rods which include conventional, RC and aircore flush.
Our drill rods can be supplied in a variety of different threads which include Remet, Metzke, Api, ARD, Api internal flush, Junior Mayhew and so forth.
We also manufacture stainless steel RC rods.
| Description | Pipe OD | Pipe Wall | Connection OD | Connection ID | Length(ft) |
| 2-3/8 IF Flush | 3 1/2 | 0.375 | 3 1/2 | 1 3/4 | 20 |
| 2-3/8 IF | 2 3/8 | .280/254 | 3 1/2 | 1 3/4 | 10, 15, 20 |
| 2-3/8 FEDP | 2 3/8 | .280/254 | 3 1/8 | 1 1/2 | 10, 15, 20 |
| 2-3/8 Mayhew Jr | 2 3/8 | .280/254 | 3 | 1 1/2 | 10, 15, 20 |
| 2-3/8 Mayhew Jr | 2 3/8 | 0.19 | 2 3/4 | 1 1/2 | 5, 10 |
| 2-7/8 Mayhew Jr Pipe Flush | 2 7/8 | 0.362 | 2 7/8 | 1 1/2 | 10, 15, 20 |
| Mayhew Reg. Flush | 3 1/2 | 0.375 | 3 1/2 | 1 1/2 | 20 |
| Mayhew Reg. | 2 3/8 | .280/254 | 3 1/2 or 3 1/4 | 1 1/2 | 10, 15, 20 |
| 2-7/8 IF | 4 1/2 | 0.337 | 4 1/8 | 2 1/2 | 10, 15, 20 |
| 3-1/2 IF | 5 1/2 | 0.362 | 4 3/4 | 2 11/16 | 10, 15, 20 |
| 3-1/2 API Reg Flush | 4 1/2 | 0.337 | 4 1/2 | 1 1/2 | 10, 15, 20 |
| 4-1/2 API Reg Flush | 5 1/2 | .362/.478 | 5 1/2 | 2 1/4 | 10, 15, 20 |
| AWJ/AW w/Flats | 1 3/4 | .188/.250 | 1 3/4 | 5/8 | 5,10 |
| NWJ/NW w/Flats | 2 5/8 | .188/.250 | 2 5/8 | 1-1/4 or 1-3/8 | 5,10 |
| Name | A | B | C | D | E | F | G | H |
| TOOL JOINTS:1 | ||||||||
| 2 3/8 API Regular | 2-3/8" | 3-1/8" | 2-5/8" | 3 | 5 | 3 | 60° API | 1 |
| 2 7/8 API Regular | 2-7/8" | 3 3/4 | 3 | 3 1/2 | 5 | 3 | 60° API | 1 1/4 |
| 3 1/2 API Regular | 3 1/2 | 4 1/4 | 3 1/2 | 3 3/4 | 5 | 3 | 60° API | 1 1/2 |
| 4 1/2 API Regular | 4 1/2 | 5 1/2 | 4-5/8" | 4 1/4 | 5 | 3 | 60° API | 1 1/4 |
| 2 3/8 API Internal Flush | 2-3/8" | 3-3/8" | 2-7/8" | 3 | 4 | 2 | 60° API | 1 3/4 |
| 2 7/8 API Internal Flush | 2-7/8" | 4-1/8" | 3 25/64 | 3 1/2 | 4 | 2 | 60° API | 2-1/8" |
| 3 1/2 API Internal Flush | 3 1/2 | 4 3/4 | 4 1/64 | 4 | 4 | 2 | 60° API | 2 11/16 |
| 2 3/8 Mayhew Junior | 2-3/8" | 2 3/4 | 2 21/64 | 2 1/4 | 4 | 2 | 60° Mod. API | 1 1/2 |
| 2 3/8 Mayhew Regular | 2-3/8" | 3 1/4 | 2 35/64 | 3 | 4 | 1 1/2 | 60° Mod. API | 1-5/8" |
| 2 7/8 Mayhew Full Hole | 2-7/8" | 3 3/4 | 3 3/64 | 3-3/8" | 4 | 1 1/2 | 60° Mod. API | 2 |
| 2 3/8 Failing Exploration | 2-3/8" | 2 31/32 | 2 1/2 | 2 3/4 | 4 | 2 | 60° Mod. API | 1 1/2 |
| 2 7/8 Failing Exploration | 2-7/8" | 3 3/4 | 3-1/8" | 3 1/4 | 4 | 2 | 60° Mod. API | 1-7/8" |
| 2 3/8 Hughes Acme Regular | 2-3/8" | 3-1/8" | 219/32 | 3 | 4 | 3-3/8" | 29° Acme | 1 |
| 2 3/8 Winter Weiss | 2-3/8" | 3 1/4 | 235/64 | 3 | 4 | 1 1/2 | 60° Mod. API | 1 1/2 |
| 2 7/8 Winter Weiss | 2-7/8" | 37/16 | 235/64 | 3 | 4 | 1 1/2 | 60° Mod. API | 1 1/2 |
| 3 1/2 API Full Hole | 3 1/2 | 4-5/8" | 4 | 3 3/4 | 5 | 3 | 60° Mod. API | 27/16 |
| FLUSH JOINT TAPERED THREAD | ||||||||
| United Geophysical (1 11/16 OD) | 111/16 | 111/16 | 1-3/8" | 1 | 6 | 3 | 29° Acme | 1 |
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