professional factory for Rock Drill Botton Bit - BW HW NW Casing – TDS
professional factory for Rock Drill Botton Bit - 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) | 
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abide by the contract", conforms to the market requirement, joins in the market competition by its high quality as well as provides more comprehensive and excellent service for clients to let them become big winner. The pursue of the company, is the clients' satisfaction for professional factory for Rock Drill Botton Bit - BW HW NW Casing – TDS , The product will supply to all over the world, such as: Kenya, Haiti, Romania, Our company offers the full range from pre-sales to after-sales service, from product development to audit the use of maintenance, based on strong technical strength, superior product performance, reasonable prices and perfect service, we will continue to develop, to provide the high-quality products and services, and promote lasting cooperation with our customers, common development and create a better future.
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