High reputation Down The Hole Hammer Drilling - BW HW NW Casing – TDS
High reputation Down The Hole Hammer Drilling - BW HW NW Casing – TDS Detail:
1. Our Nw Hw Pw Casing Tubes are of the highest quality ,are manufactured to exacting specifications using advancing maching technoogy.
2. They are manufactured from seamless steel tube by cold drawn.The material is XJY850/30CrMnSiA which meets the global standard.
3. Drill rods are made from quality heat treated materials which ensure superior strength, wear resistance and toughness in the most demanding applications.
4. Rods and casing are manufactured under stringent industry standards, and are field tested under a variety of conditions.
5. All rods are designed to be compatible with other rods manufactured to the standard DCDMA.
Casing | BW | NW | HW | HWT | PWT | |
Outer diameter OD | mm (in) | 73.03 (2.88) | 88.90 (3.50) | 114.30 (4.50) | 114.30 (4.50) | 139.70 (5.50) |
Inner diameter ID – box shoulder | mm (in) | 60.33 (2.38) | 76.20 (3.00) | 101.60 (4.00) | 101.60 (4.00) | 127.00 (5.00) |
Wall thickness | mm (in) | 6.35 (0.25) | 6.35 (0.25) | 6.35 (0.25) | 6.35 (0.25) | 6.35 (0.25) |
Pin end length | mm (in) | 63.50 (2.50) | 69.85 (2.75) | 76.20 (3.00) | 63.50 (2.50) | 63.50 (2.50) |
Thread pitch | mm (in) | 6.35 (0.25) | 6.35 (0.25) | 6.35 (0.25) | 10.16 (0.40) | 10.16 (0.40) |
Weight | kg/m (lb/ft) | 11.71 (7.87) | 12.96 (8.71) | 16.95 (11.39) | 16.95 (11.39) | 20.94 (14.07) |
Casing content volume | L/m (gal/ft) | 4.19 (0.34) | 4.56 (0.37) | 8.11 (0.65) | 8.11 (0.65) | 12.67 (1.02) |
Hole volume | L/m (gal/ft) | 4.45 (0.36) | 6.62 (0.53) | 10.84 (0.87) | 10.84 (0.87) | 16.18 (1.30) |
Casing/hole annulus volume | L/m (gal/ft) | 0.27 (0.02) | 0.41 (0.03) | 0.58 (0.05) | 0.58 (0.05) | 0.85 (0.07) |
Min yield strength | MPa (psi) | 524.00 (76000.00) | 524.00 (76000.00) | 524.00 (76000.00) | 524.00 (76000.00) | 524.00 (76000.00) |
Min tensile strength | MPa (psi) | 599.84 (87000.00) | 599.84 (87000.00) | 599.84 (87000.00) | 599.84 (87000.00) | 599.84 (87000.00) |
Displacement volume | L/m (gal/ft) | 1.33 (0.11) | 1.65 (0.13) | 2.15 (0.17) | 2.15 (0.17) | 2.66 (0.21) |
Burst pressure – box shoulder | MPa (psi) | 30.30 (4394.78) | 24.24 (3515.00) | 19.56 (2837.33) | 14.98 (2172.33) | 12.25 (1777.36) |
Burst pressure – midbody | MPa (psi) | 79.74 (11565.22) | 65.50 (9500.00) | 50.94 (7388.89) | 50.94 (7388.89) | 41.68 (6045.45) |
Collapse pressure – midbody | MPa (psi) | 72.81 (10559.55) | 60.82 (8821.43) | 48.11 (6978.40) | 48.11 (6978.40) | 39.79 (5770.66) |
Product detail pictures:



Related Product Guide:
"Sincerity, Innovation, Rigorousness, and Efficiency" may be the persistent conception of our organization to the long-term to build together with shoppers for mutual reciprocity and mutual advantage for High reputation Down The Hole Hammer Drilling - BW HW NW Casing – TDS , The product will supply to all over the world, such as: El Salvador, Mecca, Miami, Our company has built stable business relationships with many well-known domestic companies as well as oversea customers. With the goal of providing high quality products to customers at low cots, we are committed to improving its capacities in research, development, manufacturing and management. We have honored to receive recognition from our customers. Till now we have passed ISO9001 in 2005 and ISO/TS16949 in 2008. Enterprises of "quality of survival, the credibility of development" for the purpose, sincerely welcome domestic and foreign businessmen to visit to discuss cooperation.

We have been engaged in this industry for many years, we appreciate the work attitude and production capacity of the company, this is a reputable and professional manufacturer.

Write your message here and send it to us