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| Place of Origin | CHINA |
| Brand Name | ROSCHEN |
| Certification | ISO |
| Model Number | 2 3/8, 2 7/8", 3 1/2", 4", 4 1/2" |
2 3/8" Mayhew Jr Drill Pipe for Water well drilling Rig
Description:
. ACCURACY: Blueprint drawings are sent before order placement to guarantee the
customer receives the exact product. For custom orders, physical samples are also
offered.
. QUALITY: Utilizing an automated friction-welding process and CNC-machined tool joints
ensure a precision product every time. Checkout our friction-welder here.
. TRACEABILITY: Every joint of pipe is engraved with a unique reference number to
enhance customer service. This establishes 100% accountability of our products and
provides customer peace of mind.
| 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" | 2-19/32" | 3 | 4 | 3-3/8" | 29° Acme | 1 |
| 2 3/8 Winter Weiss | 2-3/8" | 3-1/4" | 2-35/64" | 3 | 4 | 1 1/2 | 60° Mod. API | 1 1/2 |
| 2 7/8 Winter Weiss | 2-7/8" | 3-7/16" | 2-35/64" | 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) | 1 11/16 | 1 11/16 | 1-3/8" | 1 | 6 | 3 | 29° Acme | 1 |
| 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 |
| Tool Joint Connection | Mayhew JR, Mayhew Reg, 2-3/8" FEDP, 2-7/8" FEDP, AWJ, NWJ, 2-7/8" IF, 3-1/2" IF, 3-1/2" API Reg, 4-1/2" API Reg, 2-3/8" IF |
| Pipe OD | 2-3/8", 2-7/8", 3-1/2", 4-1/2", 5-1/2", 1-3/4", 2-5/8" |
| Pipe Wall Thickness | .190, .188, .250, .254, .276, .280, .337, .362, .368, .478 |
| Joint Length | 5', 10', 15', 20' |
| Breakout Tool | Flats, Lugs, None |
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