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| Place of Origin | CHINA |
| Brand Name | ROSCHEN |
| Certification | ISO |
| Model Number | 3 1/2", 4", 4 1/2", 5" |
Drill pipe is made from the welding of at least three separate pieces: box tool joint, pin tool joint, and the tube. The ends of the tubes are then upset to increase the cross-sectional area of the ends. The tube end may be externally upset (EU), internally upset (IU), or internally and externally upset (IEU). Standard max upset dimensions are specified in API 5DP, but the exact dimensions of the upset are proprietary to the manufacturer. After upsetting, the tube then goes through a heat treating process. Drill pipe steel is commonly quenched and tempered to achieve high yield strengths
| Drill Pipes Specifications | ||||
| Outer Diameter | Thread | Wall thickness | Length | |
| mm | inch | mm | mm | |
| 60 | 2 3/8 | FEDP (Failing connection) Mayhew Junior Mayhew Regular 2 3/8" API REG 2 7/8" API REG 3 1/2" API REG 4 1/2" API REG 6 5/8" API REG 2 3/8" API IF 2 7/8" API IF 3 1/2" API IF 4 1/2" API IF 3 1/2" BECO 4 1/2" BECO 5 1/4" BECO 6" BECO 8" BECO 10" BECO 12" BECO |
4~6 | 1000-6000 |
| 76 | 3 | 4~6 | 1000-6000 | |
| 89 | 3 1/2 | 5~9 | 1000-9600 | |
| 102 | 4 | 6~9 | 4000-9600 | |
| 114 | 4 1/2 | 6~9 | 3000-12600 | |
| 127 | 5 | 8~15 | 3000-12600 | |
| 133 | 5 1/4 | 8~15 | 3000-12600 | |
| 140 | 5 1/2 | 8~15 | 3000-12600 | |
| 152 | 6 | 8~15 | 3000-12600 | |
| 168 | 6 5/8 | 9.5 | 3000-12600 | |
| 12.5 | ||||
| 19 | ||||
| 178 | 7 | 9.6 | 3000-12600 | |
| 12.5 | ||||
| 19 | ||||
| 200 | 7 7/8 | 9.6 | 3000-12600 | |
| 12.5 | ||||
| 19 | ||||
| 203 | 8 | 9.6 | 3000-12600 | |
| 12.5 | ||||
| 19 | ||||
| Roschen Drill Pipe make by Friction Welding. | ||||
| Any special specification of Drill Pipe is available by request. | ||||
FAQ
Q: Are you a manufacturer or trading company ?
A: We are a specialized manufacturer.
Q: What are your main products, and used for?
A: Our products include core bit, PDC bit, reaming shell, core barrel, casing, drill rod, SPT equipment, Shelby sampler, drill rig and other drilling parts.
They are used for mineral exploration, geological drilling, geotechnical engineering and soil sampling.
Q: How about the delivery terms?
A: 1. Payment: T/T, L/C, Western Union, Paypal, 30% deposit in advance and rest before delivery.
2. Min. order quantity: 1 piece.
3. Transportation: By DHL/TNT/Fedex express, air, sea, train.
Q: How about discount?
A: Price is based on products and order quantity.
Q: Do you accept sample order?
A: Yes sure, please contact us for details.
Q: How about your after-sales service?
A: As a manufacturer, we offer promt technology support for all problems and questions. Besides, we accept goods return or replace for quality problem.
Q: How does your company control the quality?
A: Quality first. In order to guarantee high quality for our products, ROSCHEN always makes a serious inspection for all products and raw materials in strict procedure. We have obtained certificate of ISO9001:2000 in 2004.
Contact information:
Phiger Leo
Direct Line: 0086-137-6419 5009
WeChat: +86-137-6419 5009
WhatsApp: +86-137-6419 5009
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ROSCHEN@ INC.
ROSCHEN@ GROUP LIMITED
ROBERT ROSCHEN@ LIMITED
ROSCHEN@ HOLDINGS LIMITED
HEFEI ROSCHEN@ TOOL CO., LTD.
ROSCHEN@ GEOLOGICAL TOOL CO.,LTD.
SHANGHAI ROSCHEN@ INTERNATIONAL CO., LTD.
ROSCHEN@ GEOLOGICAL INSTRUMENTS CO., LTD.
EMAIL: roschen@roschen.com ; roschen@roschen.net
Website: http://www.roschendrill.com
http://www.roschenmining.com
http://www.roschendrilling.com
http://www.explorationcoredrilling.com
http://www.roschen.net
http://www.roschen.cn
http://www.roschen.com
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