73 mm drill pipes of a prefabricated structure with inward-facing ends, left-handed, wall thickness 9 mm, strength group - "E". L = 11.5 - 11.9 m (with lock ZN-95)
73 mm drill pipes of a prefabricated structure with inward-facing ends, left-handed, wall thickness 9 mm, strength group - "E". L = 11.5 - 11.9 m (with lock ZN-95)
73 mm drill pipes of a prefabricated structure with inward-facing ends, left-handed, wall thickness 9 mm, strength group - "E". L = 9.0 - 9.3 m (with lock ZN-95)
73 mm drill pipes of a prefabricated structure with ends upset, with right-hand thread, wall thickness 9 mm, strength group - “E”. L = 9.0 - 9.3 m (with lock ZN-95)
89 mm drill pipes of a prefabricated structure with ends upset, with right-hand thread, wall thickness 9 mm, strength group - "E" L = 9.0 - 9.3 m (with lock ZN-108)
73 mm drill pipe with welded locks with an external upset, left-handed, wall thickness 9.19 mm, strength group - "E". L = 12.0 - 12.3 m
73 mm drill pipe with welded locks with an external upset, left-handed, wall thickness 9.19 mm, strength group - "E." L = 9.0 - 9.3 m
73 mm drill pipe with welded locks with an external landing, with the right thread, wall thickness 9.19 mm, strength group - "E". L = 9.0 - 9.3 m
89 mm drill pipe with welded locks with an external upset, left-handed, wall thickness 9.35 mm, strength group - "E". L = 12.0 - 12.3 m
89 mm drill pipe with welded locks with an external upset, left-handed, wall thickness 9.35 mm, strength group - "E". L = 9.0 - 9.3 m
102 mm drill pipe with welded locks with an external upset, left-handed, wall thickness 9.35 mm, strength group - "E". L = 9.0 - 9.3 m
114 mm drill pipe with welded locks with an external upset, left-handed, wall thickness 9.35 mm, strength group - "E". L = 9.0 - 9.3 m
4 1/2 inch drill pipe with welded locks with an external upset, left-handed, wall thickness 9.35 mm, strength group - "E". L = 9.0 - 9.3 m
127 mm drill pipe with welded locks with an external upset, left-handed, wall thickness 9.35 mm, strength group - "E". L = 9.0 - 9.3 m
NW casing pipes
Roschen manufactures Metric Casing and Flush-Jointed Casing and Flush-Coupled Casing.
| Metric Series Casing | ||
| Size | O.D.(mm) | I.D.(mm) |
| 46 | 44.15 | 37.15 |
| 56 | 54.15 | 47.15 |
| 66 | 64.25 | 57.25 |
| 76 | 74.25 | 67.25 |
| 86 | 84.25 | 77.25 |
| 101 | 98.00 | 88.30 |
| 116 | 113.00 | 103.30 |
| 131 | 128.00 | 118.30 |
| 146 | 143.00 | 133.30 |
| Flush Jointed W Series Casing pipe | ||||
| Size | Outer Diameter (O.D.) | Internal Diameter (I.D.) | ||
| inch | mm | inch | mm | |
| BW | 2.874 | 73 | 2.374 | 60.3 |
| NW | 3.5 | 88.9 | 3 | 76.2 |
| HW | 4.5 | 114.3 | 4 | 101.5 |
| PW | 5.5 | 139.7 | 5 | 127.0 |
| Flush Coupled X Series Casing pipe | ||||
| Size | Outer Diameter (O.D.) | Internal Diameter (I.D.) | ||
| inch | mm | inch | mm | |
| NX | 3.5 | 88.9 | 3 | 80.5 |
| HX | 4.5 | 114.3 | 3.937 | 104.4 |
| PX | 5.5 | 139.7 | 4.867 | 127 |
| Flush Jointed Water Well Series Casing pipe(B.S.879) | ||||
| Size | Outer Diameter (O.D.) | Internal Diameter (I.D.) | ||
| inch | mm | inch | mm | |
| 4" | 4 1/2" | 114.3 | 3 7/8" | 98.3 |
| 5" | 5 1/2" | 139.7 | 4 7/8" | 123.7 |
| 6" | 6 5/8" | 168.3 | 5 7/8" | 149.3 |
| 8" | 8 5/8" | 219 | 7 7/8" | 174.7 |
Transportation:
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.
