Factory wholesale Double Wall Drill Pipe - Symmetric Casing Systems with Slide Blocks – TDS

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Factory wholesale Double Wall Drill Pipe - Symmetric Casing Systems with Slide Blocks – TDS Detail:

Application Range

It is recommended to drill in rock formation where contains some ovals and fractures.

Design Principles

Make the casing follow easy and the equipment and operation simple

Outstanding Advantages

1.The stable and reliable working performance and the less vibration of drill rig.

2.Flexible to open and close.

Operation Procedure

1.when the drilling starts, the blocks slides down through the grooves on pilot bit,and reams to drive the casing shoes and tubes into the hole.

2.When finished the drilling in overburden rock formations, raise the drilling tools and the blocks will get closed through the grooves , and the drilling tools can be pulled out from the hole.

3. Next construction can be followed.

Model	O.D of casing tube(mm)	I.D ofcasing tube(mm)	Wall thickness(mm)	Guide device max Dia.(mm)	Reamed Dia.(mm)	Max O.D of normal bit(mm)	Blocks qty	Hammer type	Weight(kg)
TDS186	219	199	10	197	234	185	3	COP64/DHD360/SD6/QL60/MISSION60	61
TDS210	245	225	10	222	260	210	3	JS8/COP84/DHD380/SD8/QL80	88
TDS240	273	253	10	251	305	240	3	JS8/COP84/DHD380/SD8/QL80	96.5
TDS280	325	305	10	302	350	282	3	JS8/COP84/DHD380/SD8/QL80	115
TDS305	355	325	10	322	380	305	3	DHD112/NUMA120	214
TDS365	406	382	12	380	432	365	4	DHD112/NUMA120	254
TDS432	480	454.6	12.7	450	505	432	4	TK14/NUMA125	415
TDS460	508	482.6	12.7	479	534	461	4	NUMA180/TDS18	630
TDS510	560	534.6	12.7	530	590	510	4	NUMA180/TDS18	730
TDS553	610	584.6	12.7	582	639	553	4	NUMA180/TDS18	895
TDS596	660	628	16	625	690	596	4	NUMA180/TDS18	946
TDS645	711	679	16	675	741	645	4	NUMA180/TDS18	1010
TDS694	762	730	16	726	792	694	4	TDS24/NUMA240	1595
TDS744	813	781	16	776	845	744	6	TDS24/NUMA240	2436
TDS846	914	882	16	878	946	846	6	TDS24/NUMA240/QL300	2756
TDS948	1016	964	16	980	1050	948	6	TDS24/NUMA240/QL300	3076

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"Based on domestic market and expand overseas business" is our development strategy for Factory wholesale Double Wall Drill Pipe - Symmetric Casing Systems with Slide Blocks – TDS , The product will supply to all over the world, such as: Eindhoven, Zimbabwe, Haiti, Our company, is always regarding quality as company' s foundation, seeking for development via high degree of credibility , abiding by iso9000 quality management standard strictly , creating top-ranking company by spirit of progress-marking honesty and optimism.

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