tianjin huachang xingye technology co .,ltd

Diaphragm Wall Stop End Extractor/Stop End Puller 1200mm for Diaphragm Wall Wide Trenches B800mm, B1000mm diaphragm wall stop-end extractor 1200mm diaphragm wall stop end extractor for wide trenches B 800 mm,B1000mm 1200mm diaphragm wall water stop end extractor for wide trenches B 800 mm,B1000mm 1200mm diaphragm wall flat stop end extractor for wide trenches B 800 mm,B1000mm 1200mm diaphragm wall flat stop end puller for wide trenches B 800 mm,B1000mm Diaphragm wall stop end element extractor for sheet pile B800 , B1000mm diaphragm wall stop-end sheet piles width 600mm, 800mm ,1000mm, 1200 mm Diaphragm wall  Round stop end extractor,round stop end pipe extractor , Round stop end pipe puller of diaphragm Hydraulic equipment designed for the extraction of diaphragm wall stop-end sheet piles width 600 to 1200 mm The unit is operated by a power pack and it is composed of heavy duty base frame with two trapezoid sliding columns maneuver...

Casing Oscillators for Foundation Rigs Type Short Version Hydraulic casing oscillators are used to drive and to extract large steel casings with diameters ranging from 800 to 2500 mm up to depths of 70 m. The required hydraulic power is supplied either by the excavating machine (hydraulic crawler crane or drilling rig) or by a separate power pack Casing Oscillators for cranes type(long version) Casing Oscillators for foundation rigs type  (short version) casing oscillator Hydraulic casing oscillators are used to drive and to extract large steel casings with diameters ranging from 800 to 2500 mm up to depths of 70 m. The required hydraulic power is supplied either by the excava...

Cfa Auger 600mm Dia with Auger Start for Bauer Bg24 Drilling Rig for Continuous Flight Auger Pile Continuous flight auger CFA auger 600mm dia used for bauer BG 24 rotary drilling rig for piling foundation work,flight length 14m , CFA AUGER START 2M , CFA AUGER HEAD 2M , CFA AUGER BIT 2 M ,CFA PILOT BIT 2M Continuous flight auger length 2m ,4m, 6m φ600 CFA PILES ARE A TYPE OF DRILLED FOUNDATION IN which the pile is drilled to the final depth in one continuouus process cusing a continouous flight auger CFA Auger Heads DTH hammer flight augers rod Triaxial stir flight augers rod CFA PILES ARE A TYPE OF DRILLED FOUNDATION IN which the pile is drilled to the final depth in one continuouus process cusing a continouous flight auger CFA piles - drilled by continuos flight auger system - combine the advantages of the driven piles with the veracity of the bored  size Diameter MM Picth mm Flight thckness  mm Length mm Φ300 280mm 280 16 2-10m Φ400 ...

600mm Hydraulic Diaphragm Wall Grabs Bauer Type Used on Bauer Drilling Rig 600mm hydraulic diaphragm wall grabs bauer type used on bauer drilling rig our grab head can used for bauer wall grabs , grabs can be customed hydraulic diaphragm wall grabs are the best solution to excavate diaphragm walls in all soil conditions up to a soil hardness of 70 mPA as light chisseling work is hydraulic diaphragm wall grabs specificaiton and size 400mm hydraulic diaphragm wall grab,500mmhydraulic diaphragm wall grab,600mm,800mmhydraulic diaphragm wall grab,1000mm,1200mm ,others can meet too also have mechnical daphragm wall grabs specificaiton and size 400mm ,500mm,600mm,800mm,1000mm,1200mm ,others can meet  Grab head 600mm dia for bauer hydraulic diaphragm wall grab b 500mm,600mm,800mm,1000mm,1200mm ,others can meet too Mechanical Diaphragm Wall Grabs Mechanical Grab Diaphragm Wall Grabs (mechanical) Mechanical grabs are the best solution to is possible other tools used for diaphragm ...

flanged drill pipe Ф273 mm for reverse circulation air lift drilling Large diameter flanged drill pipe flanged drill pipe for reverse circulation air lift drilling. It is a part of drill string to transmit the torque from the rotator of the pile-top drilling rig to the drill bit body Air Lift Drill Pipe drill pipe specification Ф273*18*3000 Ф325*18*2500/3000 Ф325×20×2500 Ф351*20*3000 Ф377*22*3000 Ф377*24*3000 Ф406*26*3000 φ559*22-φ351*14*3500 flanged drill pipe for Large Diameter Hydraulic Driven Drilling Large diameter flanged drill pipe for reverse circulation air lift drilling rig large dia drill pipe with flange end for reverse circulation air lift drill size ф273mm,ф377mm, size200mm-800mm Air lift drill pipe for reverse circulation reverse circulation air lift drill rock reammer bit Large diameter hole drag bit air lift reverse circulation roller bit core barrel,core barrel for air lift reverse circulation drilling.reverse circulation AIR SWIVEL u...

hammer grab for pile 1000mm,1500mm for hard soil conditions  NO specification Grab width dia D Height L weight(kg)           900                  900               4500          3000 1       1200                1200              5100           5500 hammer grab for pile he hammer grab is the most important tool in pile construction and it determines the drilling progress. hammer grab combines the advantages of a number of good hammer grabs and, due to its special characteristics, is a universial hammer grab of top class we supply rotary drilling tools/HDD/DTH/RC tools match for Soilmec, Bauer, CasaGrande, Mait, , IMT, ATLAS rigs bored pile ,secant pile driven pile , CFG pile jet grouting pile ,CFA pile,stone clumn pile, soil mix wall tools ,d...

1200mm dia casing puller hydraulic type  for double wall casing pipe for deep foundation piling work 1200mmdia hydraulic casing puller for double wall casing pipe for deep foundation piling work 1200mm dia hydraulic casing extractor for double wall casing pipe for deep foundation piling work Hydraulic casing puller dia 1000mm used for deep foundation piling work Single wall casing puller ,double wall casing puller , 1000mm dia casing puller ,900mm casing puller , 1500mm casing puller ,1500mm casing extractor , 1800mm hydraulic casing puller , 1800mm hydraulic casing extractor machine They are hydraulic clamping machines to pull out casing pile pipe or similar pipe. Pull out casing pile pipe or similar pipe. They may be coupled to the base pile machine by means of telescopic boom o...

single wall casing 800mm with key join for double rotary piling work used on bauer soilmec drilling rig 800mm Dia casing for double rotary piling works Single wall casing/ joint thickness 40mm; wall thickness 25mm 760mm diameter Single wall casing with F/M casing joint Casing shoes with cutting teeth (Teeth and socket 12 pcs) Casing joints and pipes for pile protection of collapsing. Casing joints are composed of one male half joint and one female joint welded at each end of casing pipe for easy pipe connection. Joints coupling supplied with conical screw type for single and double wall casing. SINGLE WALL CASINGS WITH KEY JOINT Casing drive adapter 960mm diameter Single wall casing with F/M casing joint 600mm diameter single wall casing pipe Another type of casings are with key joints. casing quick joint system is for single wall casings and must be used only with light columns. Screw joints are suitable for deep boreholes tianjin huachang xingye technology co.,ltd  email inf...

double wall casing Casing joints and pipes for pile protection of collapsing. Casing joints are composed of one male half joint and one female joint welded at each end of casing pipe for easy pipe connection. Joints coupling supplied with conical screw type for single and double wall casing. Double Wall Casings - Screw type, Diameter 1000/920 mm, Length: 2 m  Double Wall Casings - Screw type, Diameter 1000/920 mm, Length: 3 m Double Wall Casings pipe - Screw type, Diameter 1000/920 mm, Length: 2 m Double Wall Casings - Screw type, Diameter 1000/920 mm, Length: 3 m double wall casing pipe/Single wall casing Casing joints and pipes for pile protection of collapsing. Casing joints are composed of one male half joint and one female joint welded at each end of casing pipe for easy pipe connection. Joints coupling supplied with conical screw type for single and  tianjin huachang xingye technology co.,ltd  email info@tjdrilling.com   web: www.tjdrilling.com ...

double cut rock Progressive auger 1000mm used for deep foundation piling work bauer soilmec typedouble cut Progressive auger Double cut rock auger ,double start rock auger for deep foundation piling work single cut Progressive auger Main application moderately strong to strong rock (50 - 100 MPa) is recommended in uncased bores or for bigger diameters Features Kellybox 200 mm pilot bit RP4 with round shank chisels progressive cutting edge with round shank chisels wear protection: hard facing or wear strips diameter 600/700/800/900/1000/1100/1200/1500/2000mm tianjin huachang xingye technology co.,ltd  email info@tjdrilling.com   web: www.tjdrilling.com   tel:0086-22-58656461 whatsapp :008618902059907

Double cut SOIL BUCKET 800MMDIA-130*130MM match soilmec bauer rotary drill rig piling Diameter:600/700mm/800mm/900mm/1000mm/1200/1500/2000mm~3000(mm) apply rock:soft to stiff silt and clay, loose to medium  Double cut drilling bucket 800mm dia 130mm*130mm SOIL BUCKET 1200MM DIA- 130KB, CYLINDERICAL, ROCK BUCKET 750MMDIA 150X 150 KB DB CYL ROCK BUCKET 1200MM DIA (150*150 MM KB , DB, CYL) ROCK BUCKET 1500MM DIA (150*150 MM KB , DB, CYL) 25 MM ROCK TEETH SOIL BUCKET 1000 MM, 200*200 MM, CONICAL, DB CLEANING BUCKET1000MM DIA (200*200) CYL. DB CLEANING BUCKET1200MM DIA -200*200 (DB CLEANING BUCKET800MM DIA -130*130 MM KB DOUBLE BOTTOM) CLEANING BUCKET1000MM DIA -130*130 MM DOUBLE BOTTOM ROCK BUCKET 1000, 130*130 KB DB, CYL., WITH 30 MM TEETH ROCK BUCKET 800, 130*130 KB DB, CYL., WITH 30 MM TEETH tianjin huachang xingye technology co.,ltd  email info@tjdrilling.com   web: www.tjdrilling.com   tel:0086-22-58656461 whatsapp :008618902059907 

Core barrel with replaceable teeth Main application strong rock (up to 100 MPa), lightly reinforced concrete Also suitable for boulders Main application: up to strong rock (80 MPa), reinforced concrete suitable for boulders D (mm) 500/600/700/800/900/1000/1200/2000 Core barrel with round shank chisel Core Barrel with bullet teeth  1000mm dia used for deep foundation piling work Core barrel with replaceable teeth ,Core barrel with cutting teeth,Core barrel with pin teeth,Core barrel with round shank chisel,Core barrel with round shanks Ø1500MM 130 x 130 Up to 180KN C800mm dia grab type core barrel used for deep foundation piling work grab type core barrel ,grabing style core barrel main use for gravel , boulders Core Barrels are used for cutting an annular ring in rock or concrete (also reinforced concrete). The center core is usually broken with round shank picks, rock auger or cross cutter. The advantage of using the core barrel is the concentration o...

double cut cleaning bucket used for deep foundation piling work also called double opening cleaning bucket, double cut drilling cleaning bucket Drilling cleanout bucket Main application: Cleaning Bucket, used for cleaning the bottom of the borehole after drilling Features: Kelly box: 130-150-200 - other available upon request Cutting Blade Bottom Gate: available with single bottom with flapper or Double rev. Bottom diameter 600/700/800/900/1000/1100/1200/1500mm Match bauer soilmec casagrande rotary drilling rig CLEANING BUCKET1000MM DIA (200*200) CYL. DB CLEANING BUCKET1200MM DIA -200*200 (DB CLEANING BUCKET800MM DIA -130*130 MM KB DOUBLE BOTTOM) CLEANING BUCKET1000MM DIA -130*130 MM DOUBLE BOTTOM ROCK BUCKET 1000, 130*130 KB DB, CYL., WITH 30 MM TEETH ROCK BUCKET 800, 130*130 KB DB, CYL., WITH 30 MM TEETH tianjin huachang xingye technology co.,ltd email info@tjdrilling.com web: www.tjdrilling.com tel:0086-22-58656461 whatsapp :008618902059907

Hydraulic casing clamp used for double wall casing , single wall casing ,foundation pilling bauer type Available diameter range 880 t+o 2,500 mm The hydraulic casing clamp can be operated vis the hydraulic system of the drilling rig or a separate hydraulic power pack. Hydraulic casing clamps and various inserts are available for other diameters on request 1300 mm OD Hydraulic Casing Clamp-no power pack 1180 mm Mechanical Casing Clamp 1000 mm Mechanical Casing Clamp tianjin huachang xingye technology co.,ltd email info@tjdrilling.com web: www.tjdrilling.com tel:0086-22-58656461 whatsapp :008618902059907

CFG continuous auger with flange coupling dia 600mm with CFG auger head for CFG Pile foundation Flange coupling continuous flight auger dia 600mm for CFG PILE Cement Fly-ash Gravel Pile,CFG pile flight auger,CFG adapter cfg pile drill rig CFG AUGER WITH FLANGE COUPLING DIA 600MM FOR CFG PILE ,CFG AUGER HEAD DIA 600MM FOR CFG PILE ,CFG PILOT BIT FOR CFG PILE , CFG PILOT HEAD FOR CFG PILE high bearing capacity and small settlement of CFG pile, CFG pile have been used widely in foundation treatment of engineering construction CFG pile composite foundation has been widely used and promoted in the construction field for its low cost, short construction period, perfect reinforcing effect and strong ability to control settlement and etc. based on the relevant field tests and numerical simulation results, this paper introduces the working mechanism of CFG pile composite foundation, and discusses the impact of materials price fluctuation on foundation cost Cement Fly-ash Gravel Pile CF...

Hydraulic Extractor For Stop End Pipe Round Type 800mm-2800mm for diaphragm wall stop end pipe extractor Hydraulic extractor for stopend pipe round stop end pipe size 800-2500mm we have two type diaphragm wall stop end extracor one is small type size from 600mm-800mm, another is large type size 800-2800mm hydraulic extractor has been designed for the extraction of stop end pipes from diaphragm wall foundation sunk to depths of up to 50/60 meters. The clamp assembly it’s in 3 articulated segments, constructed to provide appropriate tolerance and grip on the casing tube. the following is 1200mm one 2, TECHNICAL SPECIFICATION NAME UNIT PARAMETER REMARK LIFT CYLINDER QUANTITY PC 4 CYLINDER MAX STROKE mm 1000 HOLD CYLINDER QUANTITY PC 1 MAX HOLDER FORCE t 150 MAX CASING DIAMETER mm 1200 RATED LIFT FORCE t 400 BELOW 30MPa WEIGHT kg 6100 OUT SIZE(L×W×H) m 3x2.2x2M TRANSPORT SIZE HYDRAULIC POWER STATION MOTOR POWER STATION MOTOR TRIPLE-PHASE ASYNCHRONOUS MOTOR POWER Kw 45 SPEED rpm 1500 FUEL...

HAMMER GRAB FOR PILES large size 1500mm-3000mm for diffrent soil conditions (sand, gravel, clay, sandstone and granite HAMMER GRAB FOR PILES small size 1000mm-2000mm for diffrent soil conditions (sand, gravel, clay, sandstone and granite small to medium size hammer grabs is designed and manufactured to excavate circular piles from 1000 to 2000 mm diameter in a heavy wide range of soil conditions (sand, gravel, clay, sandstone and granite) with a cohesive value up to 15.000 kg/m2 supported and operated by a single line or double line The hammer grab is the most important tool in pile construction and it determines the drilling progress. Double rope hammer grab with high closing force especially suitable for vibration free boring in semi hard soil conditions Hydraulic Spherical Grab single rope hammer grab , double rope hammer grab Model CASING DIAMETER MM DOWN DIAMTER MM UP DIAMETER CAPACITY L WEIGHT KG CZD/C1300 1500/1420 1300 1200 400 8000 CZD/C1400 1600/1520 1400 1300 450 9400 CZD/C1...

DTH HAMMER Hexagonal joint 120H Hexagonal JOINT 40H Hexagonal JOINT 60H Hexagonal JOINT 80HHexagonal JOINT 80M Hexagonal JOINT T-4 Hexagonal JOINT 120M Hexagonal JOINT 120H Hexagonal JOINT 120HSHexagonal JOINT 240H Hexagonal JOINT 120HL Hexagonal JOINT CFA HEXAGONAL JOINT 120H HEXAGONAL tianjin huachang xingye technology co.ltd email info@tjdrilling.com web: www.tjdrilling.com whatsapp 008618902059907

CFA AUGER 600MM dia with auger start for bauer BG24 DRILLING RIG FOR CONTINUOUS FLIGHT AUGER PILE HD 5" x 6m Dia 600mm Intermediate CFA Auger HD 5" x 1.5m Dia 600mm Lead CFA Auger HD 4" x 6m Dia 600mm Intermediate CFA Auger HD 4" x 6m Dia 450mm Intermediate CFA Auger HD 4" x 1.5m Dia 600mm Lead CFA Auger Continuous flight auger CFA auger 600mm dia used for bauer BG 24 rotary drilling rig for piling foundation work,flight length 14m , CFA AUGER START 2M , CFA AUGER HEAD 2M , CFA AUGER BIT 2 M ,CFA PILOT BIT 2M Continuous flight auger length 2m ,4m, 6m φ600 tianjin huachang xingye technology co.ltd email info@tjdrilling.com web: www.tjdrilling.com whatsapp 008618902059907

8 "BECO、10 "BECO thread rotary drill pipe for dth hammer drilling blasthole drilling 1 3 1/2 89 2740-6000 6-8.00 2 3/8 API REG drill rod 2 1/2 Z PIN, 3 3 1/2 89 4000-6000 6-8.00 2 1/2 Z CUBEX 21# 4 4 102 2440-6000 6-8.00 2 1/2 Z 5 4 102 2740-6000 6-8.00 3 1/2 API REG 2 1/2 Z 6 4 102 4000-6000 6-8.00 2 7/8 API REG 2 1/2 Z 7 4 102 4000-6000 6-8.00 CUBEX 24# 8 4 1/2 114 1500-10668 8.00-19.00 3"BECO CUBEX 28# 9 5 127 1500-10668 9.00-19.00 3 1/2" BECO CUBEX 28# 10 5 1/2 140 3000-10668 10.00-19.00 3 1/2" BECO 11 6 1/4 159 3000-10668 12.00-25.00 4 " BECO 12 7 178 3000-12192 12.00-25.00 4 1/2 " BECO 13 7 5/8 194 3000-12192 12.00-25.00 5 1/4 " BECO 14 8 203 3000-12192 12.00-25.00 6 " BECO rotary drill rod for blasthole drilling mining 15 8 5/8 219 3000-12192 12.00-38.00 6 " BECO 16 9 1/4 235 3000-12192 12.00-51.00 6/8 " BECO 17 10 254 3000-12192 12.00-51.00 8 " BECO 18 10 3/4 273 3000-12192 12.00-51.00 8 " BECO tianjin huachang xi...

DTH HAMMER LARGE DIAMETER Shroud Rod with 240H Hexagonalø508mm for pile foundation work φ420, φ508, φ720, φ920, φ1020, φ1120mm DTH HAMMER LARGE DIAMETER Shroud Rod with 240H Hexagonalø420mm for pile foundation work DTH HAMMER LARGE DIAMETER Shroud Rod with 240H Hexagonalø720mm for pile foundation work DTH HAMMER LARGE DIAMETER Shroud Rod with 240H Hexagonalø920mm for pile foundation work DTH HAMMER LARGE DIAMETER Shroud Rod with 240H Hexagonalø1020mm for pile foundation work DTH HAMMER LARGE DIAMETER Shroud Rod with 240H Hexagonalø1120mm for pile foundation work tianjin huachang xingye technology co.ltd email info@tjdrilling.com web: www.tjdrilling.com whatsapp 008618902059907

7”bumper rings used for Drill Pipes, Tubings and Casings protection bumper rings / spacer rings for Drill-Pipes, Tubings and Casings. The Tubular Protection Bumper Rings are used: To prevent contact between two pipes during Transportation, Handling and Storing operations. To prevent corrosion and damage caused by the pipe surface coming into contact during Handling, Storage or Transportation size :7" ,6 5/8",3 1/2",7 5/8",5 1/2",8 5/8",9 5/8",5" and so on other size can customed 7" drill pipe bumper ring , 6 5/8", drill pipe bumper ring casing bumper ring , tubing bumer ring drilling pipe spacer ring tianjin huachang xingye technology co.ltd email info@tjdrilling.com web: www.tjdrilling.com whatsapp 008618902059907

Mũi khoan ruột gà Dia.450mm x L5m (Agt. Rod) for Cọc d600mm Khoan khô D600mm for Cọc d600mm Khoan ruột gà Mũi khoan ruột gà Dia.280mm x L5m Mũi khoan ruột gà Dia.280mm x L2-3m Khoan khô D450mm *L5M Khoan khô D300*l6m Cọc D600, L=16m ( Khoan khô ) Cọc D800, L=8m (khoan ướt) máy khoan dẫn ,khoan khô D600 CFA piles - drilled by continuos flight auger system - combine the advantages of the driven piles with the veracity of the bored piles. The drilling method allows to excavate in a wide of soils, dry or water logged, loose or cohesive and also to penetrate through low capacity, soft rock formations such as loamy clays, limestones and sandstone, etc CFA diameter range from 400 to 1400 mm Tianjin huachang xingye technology co ltd  Email info@tjdrilling.com Web www.tjdrilling.com Whatsapp 008618902059907

Gầu khoan đá D800 for Cọc 800mm Gầu khoan đá D1000 for Cọc 1000mm Gầu khoan đá D1200 for Cọc 1200mm Gầu khoan đá 1500 for Cọc 1500mm Gầu khoan đá D2000 for Cọc 2000mm Gầu khoan đá D2500 for Cọc2500mm Chiều dày thành: 20-40mm, dày đáy: 50mm, cao thành: 1050mm Đơn hàng tối thiểu: 01 sản phẩm Thời gian cung cấp: Theo thoả thuận sản xuất và cung cấp gầu khoan đá với chất lượng đạt chuẩn: Diameter：600~3000（mm） Apply rock：Dense sand, granvle and medium up to weak Main application very dense sand and gravel, weak to medium hard rock (< 50 MPa) is recommended in uncased bores or for bigger diameters and for secant pile walls Features Kellybox 200 mm round shank chisel pilot bit RP4, cutting edge and collar plate with round shank chisels Diameter (mm) Bucket D1 (mm) Height H (mm) Bucket height H1 (mm) Flat teeth N.O. Bullet teeth NO. 600 540 2000 1200 2 10 800 700 2000 1200 4 14 1000 900 2000 1200 6 18 1200 1100 2000 1200 7 20 1500 1400 2000 1200 9 28 1800 1700 2000 1000 11 32 2000 1900 1600...

Gầu cắt vành D1000MM for Cọc 1000mm Gầu cắt vành D800MM for Cọc 800mm Gầu cắt vành D1200MM for Cọc 1200mm Gầu cắt vành D1500MM for Cọc 1500mm Gầu cắt vành D1800MM for Cọc 1800mm Gầu cắt vành D2000MM for Cọc 2000mm Gầu cắt vành D2500MM for Cọc 2500mm sản xuất và cung cấp gầu cắt vành với chất lượng đạt chuẩn: Mô tả/ Ứng dụng: Số răng gầu: 9-21, chiều cao: 1400-1700mm, cao thân: 1200mm Đơn hàng tối thiểu: 01 sản phẩm Diameter (mm) D1 Bucket (mm) H Height (mm) H1 Bucket height (mm) Bullet teeth NO. Φ600 520 1620 1200 7 Φ800 720 1620 1200 9 Φ1000 920 1620 1200 9 Φ1200 1120 1620 1200 12 Φ1500 1420 1620 1200 15 Φ1800 1720 1620 1200 18 Φ2000 1920 1620 1200 21 Φ2200 2120 1620 1200 21 Φ2500 2420 1620 1200 21 Core Barrels are used for cutting an annular ring in rock or concrete (also reinforced concrete). The center core is usually broken with round shank picks, rock auger or cross cutter. The advantage of using the core barrel is the concentration of the crowd force and torque on small rin...

Gầu xoắn vít D800 for Cọc 800mm Gầu xoắn vít D1000 for Cọc 1000mm Gầu xoắn vít D1200 for Cọc 1200mm Gầu xoắn vít D1500 for Cọc 1500mm Gầu xoắn vít D1800 for Cọc 1800mm Gầu xoắn vít D2000 for Cọc 2000mm Gầu xoắn vít D2500 for Cọc 2500mm Mô tả/ Ứng dụng: Chiều dày cánh: 30-40mm, bước xoắn: 250~800mm, chiều cao: 800-2500mm Đơn hàng tối thiểu: 01 sản phẩm double cut Progressive auger Main application moderately strong to strong rock (50 – 100 MPa)  is recommended in uncased bores or for bigger diameters Features Kellybox 200 mm pilot bit RP4 with round shank chisels progressive cutting edge with round shank chisels wear protection: hard facing or wear strips diameter 600/700/800/900/1000/1100/1200/1500/2000mm tianjin huachang xingye technology co ltd whatsapp 008618902059907 emai info@tjdrilling.com