Case Study: 91mm Core Drill Bits Supplied for Urban Foundation Investigation Project in Syria – December 2025
In December 2025, our company completed a supply of 300 pieces of 91mm core drill bits for an urban infrastructure foundation investigation project in Syria.
What made this project meaningful was not only the drilling performance in fine‑grained granite, but also the detailed technical discussions and practical negotiation process behind the order. This case reflects how professional communication, transparency, and engineering understanding build long‑term trust.
Project Background
- Project Date: December 2025
- Location: Syria (Municipal Urban Construction Zone)
- Application: Foundation Geological Investigation
- Formation: Fine‑grained Granite
- Drill Bit Model: 91mm Core Drill Bit
- Total Quantity: 300 PCS
- Average Drilling Speed: 4–5 meters/hour
The client was a local engineering contractor responsible for foundation survey work prior to large‑scale urban development.
First Contact: A Cautious Buyer
When the client first contacted us, the conversation was direct and technical. Their first message was not about price—it was about granite.
They explained that previous suppliers had promised performance in “hard rock,” but in fine‑grained granite, the bits wore out too quickly. Drilling speed dropped below 3 m/h after short usage, and frequent bit replacement delayed the project schedule.
Their core concern was clear: “We cannot afford unstable performance. Speed fluctuation affects everything.”
For infrastructure projects, drilling delays can mean machinery downtime, labor cost increases, and contract penalties. They were not looking for the cheapest bit—they were looking for predictable performance.
Technical Discussion Before Price Negotiation
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Before we discussed pricing, our engineering team requested:
After reviewing formation conditions, we explained why many bits fail in fine‑grained granite:
We proposed:
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The 91mm core drill bit used in the Syria project |
At this stage, the client told us something important: “Other suppliers talk about hardness. You talk about wear and balance.” That comment marked a turning point in the discussion.
The Pricing Conversation: Cost vs. Downtime
When pricing discussion began, the client compared three suppliers. Our unit price was not the lowest.
The client openly stated: “If your bit lasts 20% longer, we save more than the price difference.”
This is a typical concern for overseas engineering contractors: they calculate cost per drilled meter, not unit price.
We provided:
- Estimated lifespan comparison
- Suggested rotation speed parameters
- Field usage recommendations
- Replacement cycle calculation
Instead of pushing price, we focused on cost efficiency over total drilling depth. That approach built confidence.
Order Confirmation and Production Transparency
After two weeks of technical discussion and internal evaluation, the client confirmed an order of 300 pieces.
Their requirement:
- Strict batch consistency
- On‑time production
- Pre‑shipment inspection photos
- Clear export documentation
We provided production progress updates at key stages:
- Raw material preparation
- Matrix pressing
- Machining completion
- Final inspection
This level of transparency reduced their procurement risk. For overseas buyers, supplier reliability is often more important than marketing claims.
On‑Site Performance in Fine‑Grained Granite
Once deployed in Syria, the bits were used in foundation boreholes under granite formation.
Reported results:
- Stable drilling speed: 4–5 meters/hour
- Reduced vibration
- Smooth cuttings discharge
- Consistent core quality
- Lower replacement frequency than previous supplier
The client specifically noted: “Speed remained stable throughout the drilling process. That is what we needed.”
In granite formation, consistency is more valuable than occasional peak performance.
Real Concerns of International Clients
- Predictability Over Promises – They prefer realistic performance data rather than exaggerated claims.
- Total Project Cost – Downtime, machine idle hours, and labor cost matter more than unit price.
- Communication Efficiency – Time zone differences require responsive and clear communication.
- Batch Stability – When ordering 300 pieces, consistency is critical.
Long‑Term Cooperation Potential
After successful field performance, the client initiated discussion about future infrastructure and geological investigation projects.
Their feedback summarized our cooperation:
- Professional technical support
- Transparent communication
- Stable granite performance
- Reliable delivery
This project strengthened mutual trust and opened the door for future collaboration.
Why This Case Demonstrates Real Capability
- Technical understanding of granite drilling challenges
- Real negotiation based on engineering logic
- Cost‑per‑meter calculation approach
- Production control and quality stability
- Long‑term cooperation mindset
In foundation investigation projects, performance consistency determines schedule reliability. And schedule reliability determines project success.
Conclusion
The December 2025 Syria urban foundation project was not simply a 300‑piece order. It was a cooperation built on:
- Technical discussion before pricing
- Risk reduction for the buyer
- Transparent production updates
- Verified granite performance
With stable drilling speed of 4–5 meters per hour in fine‑grained granite using 91mm core drill bits, this project demonstrates our commitment to engineering reliability rather than marketing claims.
Facing similar granite formations in your infrastructure, mining, geothermal, or geological investigation projects?
Contact our engineering team for customized drilling solutions backed by real case experience.
Keywords: core drill bits, granite drilling, foundation investigation, Syria drilling project, 91mm core bit, fine-grained granite, drilling performance case study, cost per meter drilling, geological investigation tools, Chenghui drilling tools.