
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 |
ROSCHEN GROUP
ROSCHEN GROUP
ROSCHEN Group has the world class advanced equipment like 12000 tons forging, metal processing plant, heat treatment workshop, numerical control plant, Advanced five-axis machining center, etc. professional technical and skilled team to ensure mining, mineral tools, equipment products quality stable and reliable.
ROSCHEN Group Limited is a manufactory with years of research and development for the mining, mineral tools, equipment. We are capability to produce high performance world class products and control excellent quality. Our main product includes tricone bit, diamond core bits, drill pipe, core barrel, TCI tricone bit, mill tooth tricone bit, RC hammer, DTH bit, etc.
ROSCHEN Manufactory PROCESS
ROSCHEN Sales Value Growing Up!
ROSCHEN'S MISSION
1. Strive to create and supply Best quality products for the industry that last longer than the average products.
2. Provide excellent service for our clients. 24 hour-7 days /week schedule to get our clients what they need – FAST.