750/670mm double wall casing tube with bauer screw joint wall thickness 40mm used on bauer bg28 drill rig for cased bored pile foundation work

800/720mm double wall casing tube with bauer screw joint wall thickness 40mm used on bauer bg24 drill rig for cased bored pile foundation work 880/800mm double wall casing tube with bauer screw joint wall thickness 40mm used on bauer bg33 drill rig for cased bored pile foundation work 900/820mm double wall casing tube with bauer screw joint wall thickness 40mm used on bauer bg36 drill rig for cased bored pile foundation work 1000/920mm double wall casing tube with bauer screw joint wall thickness 40mm used on bauer bg40 drill rig for cased bored pile foundation work 1180/1100mm double wall casing tube with bauer screw joint wall thickness 40mm used on bauer bg40 drill rig for cased bored pile foundation work 1200/1120mm double wall casing tube with bauer screw joint wall thickness 40mm used on bauer bg40 drill rig for cased bored pile foundation work 1300/1220mm double wall casing tube with bauer screw joint wall thickness 40mm used on bauer bg25 drill rig for cased bored pile foundation work 1500/1400mm double wall casing tube with bauer screw joint wall thickness 50mm used on bauer bg36 drill rig for cased bored pile foundation work DOUBLE WALL casings are used for stabilising boreholes in unstable soil formations. They are designed specifically for the transmission of high torques and crowd forces generated by BG rotary drilling rigs and TIANJIN HUACHANG XINGYE TECHNOLOGY CO LTD casing oscillators. Casings are produced in double-walled construction as standard. This gives casings additional rigidity and strength and provides a continuous flush drill string As the amount of torque to be transmitted as well as the required casing depths continue to increase further and further, accompanied by increased wear, TIANJIN HUACHANG XINGYE TECHNOLGY CO LTD Technical Data – double-walled casings Casing shoes can be fitted with WS tooth holders (WS 39) or weld-on teeth type BR or BH Casing drive adapter Available range of diameters 620 to 2,500 mm The joints are made of 25CrMo forgings, which are wear-resistant and not suitable for deformation. The pipe body is Q345B, bolt 42CrMo material, high strength, high torque resistance. The joint bolts are double-row holes. Longer and thicker joints, suitable for high torque drilling Product parameters Heavy Duty Double-wall Casing D1/D2(mm) L(m) a1(mm) a2(mm) a3(mm) 2m 3m 4m 5m 6m Weight(kg) 620/540 740 1080 1420 1839 2186 12 8 40 750/670 905 1321 1730 2234 2665 12 8 40 800/720 1026 1489 1949 2417 2882 12 8 40 880/800 1070 1560 2040 2650 3159 12 8 40 900/820 1154 1673 2188 2711 3231 12 8 40 1000/920 1230 1780 2330 3025 3604 12 8 40 1180/1100 1590 2320 3060 3972 4753 16 8 40 1200/1120 1704 2487 3276 4061 4851 16 8 40 1300/1220 1750 2560 3380 4394 5245 16 8 40 1500/1400 2630 3820 5015 6492 7717 20 10 50 1800/1700 3394 4870 6347 7824 9301 20 10 50