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| Place of Origin | Germany |
| 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 Rod 2 - 7/8" Shoulder 79mm 2 - 3/8" REG
Description:
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.
Specifcations:
| Name | A | B | C | D | E | F | G | H |
| TOOL JOINTS:1 | ||||||||
| 23/8 API Regular | 2-3/8" | 3-1/8" | 2-5/8" | 3 | 5 | 3 | 60° API | 1 |
| 27/8 API Regular | 2-7/8" | 3¾ | 3 | 3½ | 5 | 3 | 60° API | 1¼ |
| 3½ API Regular | 3½ | 4¼ | 3½ | 3¾ | 5 | 3 | 60° API | 1½ |
| 4½ API Regular | 4½ | 5½ | 4-5/8" | 4¼ | 5 | 3 | 60° API | 2¼ |
| 23/8 API Internal Flush | 2-3/8" | 3-3/8" | 2-7/8" | 3 | 4 | 2 | 60° API | 1¾ |
| 27/8 API Internal Flush | 2-7/8" | 4-1/8" | 325/64 | 3½ | 4 | 2 | 60° API | 2-1/8" |
| 3½ API Internal Flush | 3½ | 4¾ | 41/64 | 4 | 4 | 2 | 60° API | 211/16 |
| 23/8 Mayhew Junior | 2-3/8" | 2¾ | 221/64 | 2¼ | 4 | 2 | 60° Mod. API | 1½ |
| 23/8 Mayhew Regular | 2-3/8" | 3¼ | 235/64 | 3 | 4 | 1½ | 60° Mod. API | 1-5/8" |
| 27/8 Mayhew Full Hole | 2-7/8" | 3¾ | 33/64 | 3-3/8" | 4 | 1½ | 60° Mod. API | 2 |
| 23/8 Failing Exploration | 2-3/8" | 231/32 | 2½ | 2¾ | 4 | 2 | 60° Mod. API | 1½ |
| 27/8 Failing Exploration | 2-7/8" | 3¾ | 3-1/8" | 3¼ | 4 | 2 | 60° Mod. API | 1-7/8" |
| 23/8 Hughes Acme Regular | 2-3/8" | 3-1/8" | 219/32 | 3 | 4 | 3-3/8" | 29° Acme | 1 |
| 23/8 Winter Weiss | 2-3/8" | 3¼ | 235/64 | 3 | 4 | 1½ | 60° Mod. API | 1½ |
| 27/8 Winter Weiss | 2-7/8" | 37/16 | 235/64 | 3 | 4 | 1½ | 60° Mod. API | 1½ |
| 3½ API Full Hole | 3½ | 4-5/8" | 4 | 3¾ | 5 | 3 | 60° Mod. API | 27/16 |
| FLUSH JOINT TAPERED THREAD² | ||||||||
| United Geophysical (111/16 OD) | 111/16 | 111/16 | 1-3/8" | 1 | 6 | 3 | 29° Acme | 1 |
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