Ex-Works Price Premium GM Series GM60 High Pressure DTH Hammer Bits for Hard Rock Mining

• Customization: Available
• Customized: Customized
• Standard: API
• Model NO.: GM60-203
• Length: Jobber-length
• Type: DTH Hammer Bit
• Material: High Speed Steel
• Usage: Well Drilling, PCB Drilling, Masonry Drilling
• Name: High Air Pressure DTH Hammer Bits
• Feature: Fast Speed Drilling, Long Life
• Weight: 28.3kg
• Application: Rock Drilling, Core Mining, Well Drilling, Quarry
• Transport Package: Carton or Wooden Box
• Specification: 152/165/178/185/194/203/216/235/254mm
• Trademark: SPEEDMADE
• Origin: China
• HS Code: 8207199000
• Production Capacity: 50000pieces/Year

Product Description

-PRODUCT BRIEF-

The drill body of the product is 42crmo. 42CrMo steel belongs to ultra-high-strength steel, with high strength and toughness, good hardenability, no obvious temper brittleness, high fatigue limit and resistance to multiple impacts after quenching and tempering. Ability, low temperature impact toughness is good. The steel is suitable for the manufacture of large and medium-sized plastic molds that require certain strength and toughness. Alloy grade: YK05
GM Series has the following types:
GM40 size: 105 110 115 120 125 130
GM50 size: 138 146 152 165 178 185 203
GM60 size: 152 165 178 185 194 203 216 235 254(See table below)
GM80 size: 203 216 235 254 275 305
Special models can be customized


DTH Drill bit features:
Fast drilling and retrieval!High efficiency, low labor intensity of workers!

DTH Drill bit usage: 
Widely used in earth and stone engineering mining Wells drilling construction projects drilling Wells edge pillar support.

DTH Drill bit model:
Medium/Low wind pressure DTH Drill bit:80 90 100 110 120 130 140 150 180 185 200 220
High wind pressure DTH Drill bit:115 127 138 152 165 178 195 203 216 240 254 304

DTH Drill bit type:
Medium/Low wind pressure DTH Drill bit,High wind pressure DTH Drill bit

DTH hammer model:
Medium/low wind pressure DTH hammer:CIR65 CIR70 CIR90 CIR110 CIR130 CIR150 CIR170 CIR200        
High wind pressure DTH hammer:DHD340 DHD350 DHD360 DHD380 N125 SD12


DTH HAMMER application scope:
Widely used in metallurgical, coal, chemical, building materials are not busy mines and water conservancy, hydropower, highway and railway defense construction projects, etc. Suitable for dry wind water mixing and shotgun-hole water gushing wet operation, reliable performance, is the ideal drilling hole and rock drilling equipment.

DTH HAMMER application scope:
When the impact stroke begins, piston and disc are in the upper position, air pressure passes through radial holes in the bonnet and seat into the upper chamber of the cylinder, push the piston down at high speed to impact the drill bit. When the piston goes to the spline keyway of the bushing is closed, Pressure in the lower cavity begins to rise, the center hole at the top of the piston leaves the valve rod, ventilate the upper chamber, drop in pressure end of work trip. When the piston hits the end of the bit, because of the upper and lower pressure difference, the valve disc reverses and the piston returns to the stroke repeatedly.

                               
- DTH hammer bits benefits -

Drill Diameter	The connection specification	Alloy (star)	Stomates	Weight(KG)	Notes
50	29×4	5	1	1	With type 50   hammer
65	37×4	6	1	1.4	With type 60   hammer
76	44×4	8	2	2.2	With type 70   hammer
80	50×6	8	2	3.2	With type 80   hammer
90	54×6	10/11	2/3	3.9	With type 90   hammer
100	54×6	10/11	2/3	4.1	With type 90   hammer
110	54×6/60×4/65×6	13	2/3	6.0	With type 90/100B/110 hammer
120	54×6/60×4/65×6	12/13	2/3	6.2	With type 90/100B/110 hammer
130	54×6/60×4/65×6	15	3	7.2	With type 90/100B/110 hammer
140	60×4/65×6	15	3	7.9	With type 100B/110 hammer
145	60×4/65×6	16	3	8.2	With type 100B/110 hammer
150	60×4/65×6/90×6	16/20	3	8.6-19.8	With type 100B /110/150 hammer
160	65×6/90×6	20/21	3	19.3	With type 110/150 hammer
170	65×6/90×6	20	3	19.8	With type 110/150 hammer
175	65×6/90×6	20/21	3	20	With type 110/150 hammer
180	65×6/90×6	20	3	21.6	With type 110/150 hammer
200	90×6	20	3	24	With type 150 hammer
105	64×8	13	2	8	With type 340 hammer
115	64×8	13	2	8.5	With type 340 hammer
140	82×8	14	2	12	With type 350 hammer

-DTH hammer bits benefits -

The ball tooth:
It is mainly used for DTH drill bit edge teeth, suitable for very hard rocks with strong abrasivity.
Parabolic tooth:
It is mainly used in DTH drill bit side and middle teeth, suitable for rocks with medium and hard wear.
Warhead tooth:
It is mainly used in DTH drill bit middle teeth, suitable for abrasive medium hardness medium rocks. The soft rock can also be made edge teeth.
Sharp tooth:
Mainly used in DTH drill bit middle teeth, suitable for soft rocks with high drilling speed and low tooth fracture rate.

-DTH hammer bits benefits -

1.Due to the special internal structure of the DTH hammer designed according to the latest drilling theory, it can provide the maximum energy for the bit, with high drilling speed and low gas consumption.
2.Due to the use of high-quality alloy steel materials and advanced processing technology, the performance of DTH hammer is stable and its service life is long.
3.Because of the simple and reliable internal structure, the hammer is easy to disassemble, low failure rate and easy to maintain.
4.Due to the multi thread connection of chuck and hydraulic cylinder, it is easy to separate the drill from the hammer.
5.Interchangeable with DTH bit and drill pipe.Our company provides low pressure DTH Drill bits and off center DTH Drill bits.
We can make different specifications and different forms of alloy ball bit according to different needs of users.It is widely used in mining, tunnel excavation, underground plant excavation and other construction sites.It is an ideal substitute for the same type of ball bit abroad, with stable quality and high cost performance.

Strata Grading Instructions

Grade 1 loose soil: secondary loess, secondary laterite, soft sandy soil without gravel and breccia, diatomaceous earth
Grade 2 loose rocks: loess, laterite, peat, clay, sand, kaolin
Grade 3 soft rocks: strongly weathered shale, slate, dry pasture and schist, slightly cemented sand
Grade 4 slightly softer rocks: shale, sandy shale, oil shale, carbonaceous shale, calcareous shale, sand-shale interbedded, argillaceous limestone
Grade 5 slightly harder rock: gravel and gravel layers, collapsible layers, argillaceous slate, sericite chlorite slate, schist, limestone
Grade 6-7 medium hard rock: chlorite, mica, slate, dry pasture, schist, silicified limestone, calcite
Grade 8-9 hard rock: silicified mica, gneiss, basalt, diabase, pyroxenite, quartz Anshan porphyry
Grade 10-11 hard rock: granite, granodiorite, gneiss, rhyolite, quartzite
Level 12 Hardest Rocks: Quartzite, Jasperite, Cape Shale, Corundum, Quartz, Flint, Jasper
 

Rock grouping and recommended use of the bit table
Grade	name	Represents	Drilling speed	Suggested drill bit
1	Loose soil	redeposited loess,lateritite,Soft sandy soil free of gravel and breccia,diatomite	15/H	Pineapple bit,slice,plain film,Scraper coreless bit
2	Loose soil	loess,red clay,cumulosol,Sand soil,Kaolin class	8/H	Pineapple bit,denticle,slice,Triangle,Bread
3	Soft rock	Strongly weathered shale,Slate,schist,Slightly cemented sand layer	6/H	Scraper coreless bit,Concave three wings,slice,Breadslice
4	A little soft rock	Slate,arenaceous shale,carbonaceous shale,argillaceous marl,calcareous shale	5/H	scraper,Recessed coreless bit,slice,Bread,Breadslice,Triangle,Electroplated diamond
5	A little hard rock	Rubble and gravel layer collapse layer,Slate,limestone,Marble,schist	3/H	Concave three wings,Bread,A helmet piece,Electroplated diamond
6-7	Medium hardness	Slate,schist,Silicified limestone,Calcite	2/H	Bread,A helmet piece,Electroplated diamond,Hot pressed diamond,Innovative no.7 fast bit
6-7	Medium hardness	Slate,schist,Silicified limestone,Calcite	2/H	Bread,A helmet piece,Electroplated diamond,Hot pressed diamond,Innovative no.7 fast bit
8-9	Hard layer	Basalt,Quartz anshan porphyry,Fai green rock	1.2/H	A helmet piece,Low-alcohol electroplating,Low thermal,Innovative no.7 fast bit
10-11	Super Hard rock	Granite,granodiorite,gneiss,rhyolite,aposandstone	0.8/H	Low-alcohol electroplating,Low thermal,Innovative no.7 fast bit
12	Super Hard rock	aposandstone,jasperite,hornberg,corundolite	0.3/H	Low-alcohol electroplating,Low thermal,Innovative no.7 fast bit

-APPLICATION RANGE-

 

Apply to:Water Well Drilling/civil engineering and infrastructure/for rock core drilling/geological coring exploration/Soil Testing and sampling /geophysical survey/mineral exploration and other industries.

 

-WHY CHOSE US-

 SPEEDMADED is a leader in the manufacture and development of PDC bits in China. We provide the best quality PDC coring drill to the market, all types of PDC non-coring drill traces. Our drill bits are used for well drilling, mining and construction contractors. Our drill bit has been tested and verified by time, with wear resistance and fast drilling speed. Different drill bits can be customized according to different rock formations. The engineering time is greatly shortened, and the maximum performance is exerted in the operation during drilling. Our products are durable and reliable. Our products are the preferred drill bits for drilling engineers in many countries because of our precise design and efficient drilling during use.

 

-PAYMENT-

DIY customization: please provide your rock formation information or detailed size drawings.

Free samples: some samples can be provided free of charge.

Trading:EXW, FOB, CFR, CIF, DDU such as.

Payment:T/T L/C,D/A,D/P,Western Union,MoneyGram.

Delivery time: normally 7-12 days

 

-CERTIFICATE-

 

-DELIVERY-

Delivery: there are four main delivery channels including air, sea, express and road transportation, which can be selected according to customers' different requirements.

Air freight logistics:DHL/UPS/EMS/TNT/ FEDEX,etc.

-PACKAGING STYLE-

-EDLIVERY-

 

 

-AFTER-SALES SERVICE-

Dear User:

Welcome you to choose and use our products correctly!

The geological drill bit produced by our company has a 6-month warranty period.In case of abnormal scrap such as sheet falling, steel body cracking, lamination of composite sheet, etc., the company may make compensation if the situation is confirmed by the quality department of the company.

If it is one of the phenomena listed in the following table, it shall be deemed as normal scrapping, and the company shall not compensate for it:

1.Drop: Wear no more than 10%, send back for replacement, wear no more than 50%, depending on the situation, steel body cracking: wear no more than 30%, send back for replacement; Wear more than 50%, such as artificial improper crack, do not change.

2.Wrong size or thread: New back for new.

3.Weak solder joints, broken wing pieces, etc. : wear not more than 20%, send back for a new; Wear more than 50%, such as artificial improper operation, do not change.

4.The problem of lamination of composite slices: It depends.