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低风压潜孔钻头

分类：

潜孔钻头

概要：

关键词：

低风压潜孔钻头

钻铤是接在钻杆上，起到整体加重的作用，以防空斜，钻铤的内径比钻杆小，重量比钻杆大。
而在钻进过程中钻压是靠钻柱（由钻杆连接而成）重量形成的，所以钻柱下部受压应力。钻进时，一般所受钻压数值都大于钻柱的压杆稳定临界值，因之下部受压部分的钻杆将在自重作用下发生弯曲。弯曲的钻柱在旋转时将引起交变应力，导致钻柱疲劳破坏。为了降低疲劳破坏的程度，应当减小弯曲应力。这就要求尽量缩短受压段的长度，并增大其刚性。因此，钻柱下端受压部分不使用钻杆而改用钻铤。

Description of the model:

pulanka

3" DTH drill bit:

		Bit Dia.(mm)		NO.Button size
Number	Model	mm	in	Gauge button	Mid button	Front button	Gauge tooth angle	NO.Flushing holes(PCS)	Weight (KG)
G001	G90-DHD3.5-10QZ-40-B14	90	3 9/16	6*14		4*12	40°	2	4.8
G002	G95-DHD3.5-12QZ-40-B14	95	3 3/4	7*14		5*12	40°	2	5
G003	G100-DHD3.5-12QZ-40-B14	100	3 15/16	7*14		5*14	40°	2	5.3
G004	G105-DHD3.5-12QZ-40-B14	105	4 1/8	7*14		5*14	40°	2	5.5
G005	G110-DHD3.5-13QZ-40-B14	110	4 1/3	7*14		6*14	40°	2	5.8

Note: Also available in BR3, COP32, QL30 link structure.

4" DTH drill bit:

		Bit Dia.(mm)		NO.Button size
Number	Model	mm	in	Gauge button	Mid button	Front button	Gauge tooth angle	NO.Flushing holes(PCS)	Weight (KG)
G006	G105-DHD340-13QZ-40-B14	105	4 1/8	7*14	4*14	2*14	38°	2	7.6
G007	G110-DHD340-13QZ-40-B16	110	4 5/16	7*16	4*14	2*14	38°	2	7.8
G008	G115-DHD340-13QZ-40-B16	115	4 1/2	7*16	4*14	2*14	38°	2	8.2
G009	G120-DHD340-13QZ-40-B16	120	4 3/4	7*16	4*14	2*14	38°	2	8.7
G010	G125-DHD340-14QZ-40-B16	125	4 15/16	7*16	4*14	3*14	38°	2	8.9
G011	G130-DHD340-14QZ-40-B16	130	5 1/8	7*16	4*14	3*14	38°	2	9.4
G012	G140-DHD340-14QZ-40-B18	140	5 1/2	7*18	4*14	3*14	38°	2	9.8
G013	G150-DHD340-16QZ-40-B18	150	6	8*18	5*14	3*14	38°	2	10.3

Note: Also available in Mission 40, Ql40, S40, K4 link structure.

5" DTH drill bit:

		Bit Dia.(mm)		NO.Button size
Number	Model	mm	in	Gauge button	Mid button	Front button	Gauge tooth angle	NO.Flushing holes(PCS)	Weight (KG)
G014	G132-DHD350-14QZ-40-B18	132	5 3/16	7*18	4*15	3*14	40°	2	14.9
G015	G138-DHD350-14QZ-40-B18	138	5 1/2	7*18	4*15	3*14	40°	2	15.2
G016	G146-DHD350-16QZ-40-B18	146	5 3/4	8*18		8*14	40°	2	15.8
G017	G152-DHD350-16QZ-40-B18	152	6	8*18		8*14	40°	2	18.2
G018	G165-DHD350-19QZ-40-B18	165	6 1/2	9*18	6*16	4*16	40°	3	22
G019	G180-DHD350-19QZ-40-B18	180	7 7/8	9*18	6*16	4*16	40°	3	19.5
G020	G190-DHD350-19QZ-40-B18	190	7 1/2	9*18	6*16	4*16	40°	3	22.5
G021	G195-DHD350-19QZ-40-B18	195	7 11/16	9*18	6*16	4*16	40°	3	22.9

Note: Also available in Mission 50, Ql50, QSS50, K5 link structure.

6" DTH drill bit:

		Bit Dia.(mm)		NO.Button size
Number	Model	mm	in	Gauge button	Mid button	Front button	Gauge tooth angle	NO.Flushing holes(PCS)	Weight (KG)
G022	G152-DHD360-16QZ-40-B18	152	6 1/16	8*18		8*16	40°	2	22.9
G023	G165-DHD360-16QZ-40-B18	165	6 1/2	8*18		8*16	40°	2	23.3
G024	G180-DHD360-19QZ-40-B18	180	7 1/16	9*18	6*16	4*16	40°	3	25.8
G025	G190-DHD360-19QZ-40-B18	190	7 1/2	9*18	6*16	4*16	40°	3	28
G026	G195-DHD360-19QZ-40-B18	195	7 5/8	9*18	6*16	4*16	40°	3	29.7
G027	G203-DHD360-24QZ-40-B18	203	8	10*18	8*18	6*16	40°	2	31
G028	G216-DHD360-24QZ-40-B18	216	8 1/2	10*18	8*18	6*16	40°	2	33.6

Note: Also available in Mission 60, Ql60, SD6, K6 link structure.

8" DTH drill bit:

		Bit Dia.(mm)		NO.Button size
Number	Model	mm	in	Gauge button	Mid button	Front button	Gauge tooth angle	NO.Flushing holes(PCS)	Weight (KG)
G029	G203-DHD380-24QZ-40-B18	203	8	10*18	8*18	6*16	40°	2	47.8
G030	G216-DHD380-24QZ-40-B18	216	8 1/2	10*18	8*18	6*16	40°	2	52.9
G031	G219-DHD380-24QZ-40-B18	219	8 5/8	10*18	8*18	6*16	40°	2	54
G032	G229-DHD380-25QZ-40-B18	229	9	10*18	8*18	7*16	40°	2	57
G033	G235-DHD380-32QZ-40-B18	235	9 1/4	12*18	12*18	8*16	40°	2	57.5
G034	G254-DHD380-32QZ-40-B18	254	10	12*18	12*18	8*16	40°	2	61
G035	G278-DHD380-41QZ-40-B18	278	11	12*18	20*18	9*16	40°	2	71

Note: Also available in Mission 80, Ql80, SD8, K8 link structure.

Description

High Grade Seel DTH Hammer Bits with CNC Tools

• Medium to large size drilling diameters
• Works in high pressure range, capable of drilling deep hole lengths
• Cuttings drawn out of the hole through reverse circulation method

• Color: Green,Blue or Based on Customer requirements

Application

• Underground mining
• Quarry benching operations
• Water well drilling

Customers can customize their DTH bits in various ways, such as changing the tungsten carbide insert profile (spherical, ballistic, etc.), face profile (flat face, concave, convex, etc.), and flushing holes.

Technical Manual of DTH Hammer

	3 Inch	3.5 Inch	4 Inch	5 Inch	6 Inch	8 Inch
Drilling diamter(mm)	Φ82-85	Φ90-93	Φ105-130	Φ130-152	Φ152-305	Φ203-305
Hammer length(mm)	867	908	1052	1387	1450	1551
External diamerer(mm)	Φ71	Φ81	Φ92	Φ114	Φ136	Φ181
Weight(kg)	19	21.8	38	69	126	277
Working pressure(Mpa)	0.8-2.1	0.8-2.1	0.8-2.1	0.8-2.1	0.8-2.1	0.8-2.1
Air consumption(m3/min)	3-12	4.3-14.2	3.5-18	5.7-18	8.5-25	12-31
Torque(N.M)	150	205	304	590	822	1560
Lmpactfrequenc(Time/Min)	≥800	950-1500	≥800	810-1470	820-1475	860-1510
Connection thread	inside 48.8x4.2	outside API 2-3/8"	inside API 2-3/8"	outside API 3-1/2"	outside API3-1/2	outside API4-1/2"
Connection thread	Φ47-6	Φ53-8	Φ64-8	Φ84-8	Φ99.5-8	Φ128-10
Bit shank	3"-85	3.5"-90	4"-105/115/130	5"-130/140/152	6"-152/165/178/194/203/216/230/254/305	8"-152/165/178/194/203/216/230/254/305

DTH DRILL BIT

BIT FACE SHAPE SELECTION

Drop Center Bit

For high penetration rates in soft to medium rock, as well as broken rock formations. Low to medium air pressures. Maximum hole deviation control.

Concave Face

Designed for unconsolidated or broken rock, This face design will help with hole deviation inmedium to hard rock formations.

ConvexFace

For higher penetration rates in soft-medium rock like shale and limestone. Low to medium ailpressure.More resistant to wear.

Double Gauge Face

Designed for faster penetration rates in medium to hard rock formations. High air pressure

Flat Face Bit

The flat face is suitable for very hard and abrasive rock formations like qranite, basalt and hardlimestone. Hiah air pressure.

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高风压潜孔钻头

低风压潜孔钻头

3" DTH drill bit:

4" DTH drill bit:

5" DTH drill bit:

6" DTH drill bit:

8" DTH drill bit:

普兰卡