New DTH hammer

I. Company Qualification & Global Trust Endorsement
XuZhou Shenwei Foundation Machinery Technology Co., Ltd. is China's largest and most technologically advanced professional manufacturer of kelly bars and pneumatic DTH hammers, with complete production and testing equipment, and products widely used in global tough working conditions.

✅ Global Brand Matching: Our products have been supplied to top-tier domestic and overseas drilling rig brands including XCMG, Sany, Zoomlion, Tysim, Bauer, Soilmec, Casagrande, IMT, CMV, Mait, Liebherr for many years, with stable performance verified by long-term cooperation.
✅ Global Export Record: SW kelly bars and matching DTH hammers have been exported to Germany, USA, Turkey, India, Russia, Ukraine, Singapore, Malaysia and other dozens of countries, operating stably even in the harshest geological conditions.
✅ Global Service Network: Multiple overseas service centers and rich on-site maintenance experience ensure rapid response to customer needs.
II. Core Product Positioning
Shenwei Cluster Reverse Circulation Pneumatic DTH Hammer (Model QKC600-1200) is specially designed for hard rock drilling, urban environmental protection construction, and complex formations (limestone caves, inclined rock, fractured zones). Compared with traditional single hammers and positive circulation processes, it has significant cost and efficiency advantages.

III. Core Application Advantages (As Required for Overseas Scenarios)
1. Reverse Circulation Technology Principle
Adopt pump lift/air lift reverse circulation process: slag is discharged from the bottom of the hole through the inside of the drill pipe, and water/mud backflows at the hole mouth. Stable reverse circulation can be formed at 6-8m hole depth, with slag discharge speed 2x faster than traditional positive circulation.

2. Key Scenario Benefits
✅ Ultra-fast hard rock drilling: Handles 80-130MPA granite, basalt, sandstone and other hard rocks, with penetration rate up to 2-10m/hour, far higher than traditional rotary drilling.
✅ Complex formation adaptability: Patented "hammer-holding gas-decreasing" technology solves suspension and degassing problems of sub-hammers in inclined rock, cave and fractured zones, suitable for almost all land pile foundation complex conditions.
✅ Urban construction friendly: Low vibration, low noise, equipped with special slag collector for dust-free and controllable slag discharge, fully meets high environmental protection standards for urban construction in Europe, America, Southeast Asia and other regions.
✅ Low cost & high ROI: Compared with diaphragm wall cutters and single hammers, construction cost is reduced by >30%. Unified specification sub-hammers cut consumable costs and simplify maintenance.

IV. Patented Technology Backing
Thread-free sub-hammer patent: Cancels upper and lower joint threads, completely solves the industry pain points of loose impactors and difficult maintenance, increasing effective operation time by 20%.
Hammer-holding gas-decreasing patent: Improves penetration efficiency by >30% in inclined rock and cave formations.
Cone diameter protection patent: First in China to adopt cone + internal/external slag discharge technology, reducing hammer wear and jamming, extending service life by 50%.
Internal circulation slag discharge: Reduces hole collapse rate by >90% with clean slag discharge and no repeated crushing.
V. Adaptation Range
1. Compatible Equipment Brands
Compatible with all mainstream domestic and overseas drilling rig brands, such as XCMG, Sany, Zoomlion, Sunward, Bauer, Soilmec, Casagrande, IMT, CMV, Mait, Liebherr, etc.

2. Aperture Coverage
600mm-1200mm, larger diameters available with custom ring cutting hammers, support tailored modification for customer's existing equipment.

3. Optional Configurations
Roller bit version, soft rock version, barrel coring version, etc.

VI. Selection Parameters
JSC600: Aperture 600mm, 3 sub-hammers, min air consumption 27m³/min
JSC600A: Aperture 600mm, 3 sub-hammers, min air consumption 27m³/min, with roller bit
JSC800: Aperture 800mm, 6 sub-hammers, min air consumption 60m³/min
JSC800A: Aperture 800mm, 6 sub-hammers, min air consumption 60m³/min, with roller bit
QKC800: Aperture 800mm, 7 sub-hammers, min air consumption 70m³/min, soft rock applicable, with roller bit
JSC1000: Aperture 1000mm, 11 sub-hammers, min air consumption 110m³/min
JSC1200T: Aperture 1200mm, 6 sub-hammers, min air consumption 80m³/min, barrel drill, coring function
QKC1200: Aperture 1200mm, 12 sub-hammers, min air consumption 120m³/min, soft rock applicable
VII. Global Application Cases (Weaken Chinese Local Attributes)
Complex Karst Formation Project (validated for Southeast Asia/Southern Europe similar projects): Extremely fractured rock + water-rich + cave formation, max penetration rate 10m/hour, no collapse or jamming.
Urban Metro Guide Hole Project: 80-100MPA granite penetration, 20% higher efficiency than diaphragm wall cutters, 30% lower cost.
Seaside Hard Rock Support Pile Project: 130MPA basalt, narrow coastal site, one-rod-to-bottom construction with excellent efficiency.
Municipal Building Pile Project: Medium weathered granite piles, no modification required for rotary rigs, 30% cost reduction with electric air compressors.
All related products have been exported to Germany, Turkey, India, USA and other countries with matching kelly bars, running stably in local projects.
VIII. Service Support
Full-cycle technical support: Customized construction methods, equipment modification, and on-site global construction guidance to ensure project progress.