Hyderabad, Telangana, India  |  EEPC Registered Exporter
+91 9393 539 240 info@gmpneumatics.com
Indian-Made DTH Rock Drilling Tools

Drill Deeper.
Strike Water
Faster.

GMP manufactures Down-The-Hole Hammers and Drill Bits for hard-rock water well drilling and mining. Assembled in Hyderabad — 30–40% below imported brands, delivered in days, not weeks.

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8
Hammer Sizes
3½" to 8"
9
Bit Sizes
4" to OB 9½"
30%
Below
Import Prices
2
Active
Distributors
DTH Hammer 8"
Carbide Buttons
The Problems We Solve
01

Water Access in Hard Rock

600 million Indians face severe water stress. In hard-rock regions like Rajasthan, Telangana, and Karnataka, reaching groundwater requires drilling through granite and basalt — impossible without a DTH hammer. GMP puts water in the hands of communities that need it most.

02

The High Cost of Imports

Most DTH tools in India are imported from Sweden and the USA at a 30–40% premium. Small drilling contractors simply cannot afford them. GMP delivers equivalent quality, assembled in India, at a price that works for the people doing the actual drilling.

03

Downtime Kills Contracts

When an imported hammer fails on site, contractors wait days or weeks for replacement parts. GMP is assembled in Hyderabad — replacement hammers and bits ship within 24–48 hours, keeping drilling rigs running and contractors profitable.

Our Products

Complete DTH Drilling
Tool Range

From 3½" water well hammers to 8" deep mining systems — GMP covers every application with a full range of hammers and compatible bits.

Model Size (in) Size (mm) Hole Diameter Air Pressure Application
GMP-DHD35 3‑1/2" 89 mm 90–115 mm 6–24 bar Water well, shallow drilling
GMP-DHD4 4" 102 mm 100–130 mm 8–24 bar Water well, borehole drilling
GMP-DHD43 4‑3/4" 121 mm 121–152 mm 8–25 bar Water well, medium formation
GMP-DHD5 5" 127 mm 130–165 mm 8–25 bar Mining, medium formation
GMP-DHD6 6" 152 mm 152–175 mm 10–25 bar Quarrying, hard rock mining
GMP-DHD65 6‑1/2" 165 mm 165–200 mm 10–25 bar Hard rock, open-pit mining
GMP-DHD7 7" 178 mm 190–220 mm 12–28 bar Deep mining, blast holes
GMP-DHD8 8" 203 mm 200–250 mm 12–30 bar Deep mining, overburden
EN24/EN36
Alloy Steel Grade
6–30 bar
Working Pressure Range
API Std
Thread Specification
7–15 days
Custom Order Lead Time
Model Size (in) Dia (mm) Compatible Hammer Button Type Formation Type
GMP-B4 4" 102 mm GMP-DHD4 / DHD340 Concave/Flat Soft–Med Standard
GMP-B43 4‑3/4" 121 mm GMP-DHD43 / COP44 Concave/Flat Medium Standard
GMP-B65 6‑1/2" 165 mm GMP-DHD65 / DHD360 Convex Hard Standard
GMP-B7 7" 178 mm GMP-DHD7 / QL60 Convex Hard Standard
GMP-B725 7‑1/4" 184 mm GMP-DHD7 / QL60 Convex Hard Standard
GMP-B75 7‑1/2" 191 mm GMP-DHD7 / QL60 Convex Hard Standard
GMP-B8 8" 203 mm GMP-DHD8 / QL80 Convex/Flat Very Hard Standard
GMP-OB9 OB 9" 229 mm GMP-DHD8 / QL80 Flat Face Very Hard Overburden OB
GMP-OB95 OB 9‑1/2" 241 mm GMP-DHD8 / QL80 Flat Face Very Hard Overburden OB
YG8/YG11C
Carbide Button Grade
3 Profiles
Flat · Concave · Convex
All Brands
DHD · QL · SD · COP
OB System
Overburden Drilling

* OB = Overburden system bits — designed for casing advancement in loose or unstable formations.

Why Choose GMP

Indian Quality.
Local Speed.
Global Standard.

Three words that answer every contractor's biggest question about their drilling tools supplier.

Assembled in India

Every GMP hammer and bit is assembled in Hyderabad, Telangana. No import delays, no customs clearance, no weeks of waiting. Your tools ship within 24–48 hours of order confirmation.

30–40% Below Import Prices

Sandvik, Atlas Copco, and other imported brands carry a heavy premium. GMP delivers equivalent EN24/EN36 steel and YG8 carbide quality at pricing that makes economic sense for Indian contractors.

Full Range, All Applications

8 hammer sizes from 3½" to 8". 9 bit sizes including overburden. Standard and OB systems. Water well to deep mining — GMP covers every application so you deal with one supplier, not five.

Custom Orders Welcome

Non-standard sizes, special thread types, specific carbide button configurations for unique formations — GMP accepts OEM and project-specific orders with a lead time of 7–15 working days.

Quality Standards

Non-Negotiable
Specifications

The materials and processes behind every GMP hammer and bit — because quality in drilling tools is the difference between a completed borewell and a stuck rig.

  • EN24 / EN36 Alloy Steel

    High-tensile nickel-chromium-molybdenum alloy steel for maximum impact resistance and fatigue life. Not mild steel, not carbon steel — the same grade used by leading global manufacturers.

  • YG8 / YG11C Tungsten Carbide

    Premium-grade carbide buttons with optimal cobalt content for the balance of hardness and toughness. Significantly outperforms low-grade Chinese carbide in penetration rate and bit life.

  • Carburised & Case Hardened

    Every hammer body undergoes certified heat treatment — carburising followed by case hardening — to achieve surface hardness while maintaining a tough core. Done at certified facilities only.

  • API-Standard Threading

    All shank connections are machined to API standard thread specifications — DHD, QL, SD, and COP compatible — ensuring perfect fit with all major hammer brands and drill strings.

  • Pressure-Tested Before Dispatch

    Each hammer is pressure-tested at 110% of its rated working pressure before leaving our facility. Test date and rating are stamped on the body.

Certifications & Compliance

ISO 9001:2015
Quality management system — in progress
In Progress
EEPC Registered
Engineering Export Promotion Council, India
Active
Mill Certificates
Material traceability for every batch
Active
BIS Registration
Bureau of Indian Standards — in progress
In Progress
Radiographic Testing
Per-batch NDT at certified lab
Active
Applications

Built for Every
Hard Rock Challenge

GMP tools are engineered for the most demanding drilling environments across water, mining, and construction.

DTH water well drilling rig in hard rock

Water Well Drilling

The primary application for GMP tools. Drilling borewells through granite, basalt, and hard gneiss formations to reach groundwater in India's hard-rock states. Hammers 3½" to 6" are ideal.

Rajasthan Telangana Karnataka MP
Hard rock mining drill rig in an open pit

Mining & Quarrying

Open-pit mining, blast hole drilling, and quarry operations in hard rock formations. GMP's 6" to 8" hammer range delivers the penetration rates and durability that mining operations demand.

Odisha Jharkhand Chhattisgarh
Overburden casing system beside a drilling rig

Overburden & Foundation

GMP's OB 9" and OB 9½" overburden system bits are designed for casing advancement through loose, unstable, and collapsing formations — critical for foundation piling and infrastructure projects.

OB System Foundation Infrastructure
Distribution Network

Where to Find
GMP Products

GMP is stocked and available through authorised distributors in India's key drilling markets. Export enquiries handled directly through Swiftlyport.

Jaipur
Rajasthan
Serving contractors across Rajasthan — India's most water-stressed state and a primary market for borewell drilling. Contact your local distributor for stock availability and pricing.
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Indore
Madhya Pradesh
Covering central India's drilling and mining contractors in MP and surrounding regions. GMP tools available for immediate dispatch from Indore stock.
Contact Us
Want to become a GMP distributor?

We are actively seeking distributors in Odisha, Jharkhand, Karnataka, Chhattisgarh, and Gujarat.

Enquire Now
Export Markets

Indian Quality.
Global Reach.

GMP exports through Swiftlyport under EEPC registration. Indian-assembled drilling tools offer a significant cost advantage in emerging markets.

Priority Export Markets

  • ZA
    South Africa & Tanzania
    Gold, diamond, coal mining — high demand for cost-effective tools
  • NG
    Nigeria & Ghana
    Growing mining sector — India's pricing is a strong advantage
  • AE
    UAE & Saudi Arabia
    Water well & oil field construction — existing India export corridor
  • LK
    Sri Lanka, Bangladesh & Nepal
    Neighbouring markets — low logistics cost, active water programmes

Export Credentials

EEPC Registered — Engineering Export Promotion Council
Export arm: Swiftlyport — dedicated international trade entity
IEC (Import Export Code) — active
GST registered for zero-rated export invoicing
International packing, documentation & logistics support
Sample orders available for new international buyers
Send Export Enquiry

Ready to Stop Paying Import Prices
for Indian Drilling?

Talk to Gulam Mustafa directly — get a quote within 24 hours.

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Get in Touch

Request a Quote or
Distributor Enquiry

Gulam Mustafa
Proprietor — GMP Rock Drilling Tools
Phone / WhatsApp +91 9393 539 240
+91 9642 320 158
Email info@gmpneumatics.com
Website www.gmpneumatics.com
www.swiftlyport.com
Address #H.No: 1-9-105/1, Kushaiguda, ECIL Hyderabad, Telangana 500062
Response Time
Within 24 Hours
All enquiries answered within one business day

Send an Enquiry

Or WhatsApp directly: +91 9393 539 240