Precision Deep Hole Drilling Services
We specialise in accurate deep hole drilling in steel and other metals.
Gun Drilling & BTA
Deep hole drilling on steel blocks, bases and cores using gun drilling and BTA.
Flexible Production
Single prototypes, repair parts and repeat batch orders.
Drawing-Based
Holes drilled strictly according to your 2D/3D drawings.
Customization Process
From raw material to finished product — step by step with precision.
Project Inquiry & Drawings
01
You tell us if you need pre-machined mold steel blocks or finished mold parts, and send material grade, sizes, and 2D/3D drawings.
Technical Review & Quotation
02
We check feasibility, select the drilling method and send a quotation with lead time.
Order Confirmation
03
You confirm quantities, specs and delivery terms; we issue the PI and schedule production.
Cutting to Size
04
Cut steel to size if needed, mark hole positions and set up fixtures and supports.
Deep Hole Drilling
05
Gun drilling / deep hole drilling on dedicated machines, with in-process checks.
Inspection & Documentation
06
Critical dimensions are checked. Inspection reports and material certificates can be issued if requested.
Packing & Shipping
07
Anti-rust protection, crate packing and export documents are arranged; shipment is sent by air, land or sea with tracking.
Technical Specifications
Contact Us| Hole diameter range: | Ø4-60 mm |
| Max drilling depth: | Up to 1,500 mm (depending on diameter & material) |
| Max workpiece size: | Up to 3,000 mm length / up to 5 tons |
| Tolerances: | Diameter typically ±0.02 mm; straightness ≤0.01 mm / 100 mm (case-by-case) |
| Surface finish: | Ra 0.8-3.2 µm achievable for most holes |
| Supported materials: | Mold steels (P20, H13, 1.2344, 1.2738, etc.), alloy steels, carbon steels, selected stainless steels and aluminum |
| Drawing formats: | STEP, IGES, Parasolid, PDF 2D drawings |
Other specifications can be reviewed individually according to your drawings.
Deep Hole Drilling Case Display
Here are sample mold steel blocks and inserts after deep hole drilling.
Deep Hole Drilling
Deep Hole Drilling
Deep Hole Drilling
Deep Hole Drilling
Deep Hole Drilling
Deep Hole Drilling
Deep Hole Drilling
Deep Hole Drilling
Deep Hole Drilling
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Coordinate Measuring Machine (CMM)
Precision 3D dimensional inspection, accuracy up to 0.001 mm.
Bore Gauge (Hole Diameter Gauge)
High-accuracy bore measurement with automatic data logging.
Straightness Tester
Deep-hole straightness inspection to ensure bore perpendicularity.
Surface Roughness Tester (Profilometer)
Checks bore surface finish to ensure the Ra value meets spec.
Frequently Asked Question
For more information, please contact us
What materials can you drill?
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Carbon/alloy steels, mold steels, stainless steel, aluminum alloys, copper/brass, and some engineering plastics (e.g., acrylic). Contact us for special materials.
What hole sizes and depths can you handle?
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Typical capacity Ø4–60 mm; depths up to ~1,500 mm (method-dependent).
What accuracy can you achieve?
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φ2–32 mm ±0.02 mm; φ35–120 mm ±0.05 mm; straightness ≤0.01 mm per meter; surface finish Ra 0.2–0.6 μm.
How fast can you deliver rush jobs?
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With 24/7 capacity, some urgent parts can ship within 24 hours depending on specs and quantity. Standard orders: 3–7 working days.
Do you support customer-supplied material or turnkey?
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Both. Send your material or let us source steel/aluminum locally; bulk purchasing can reduce total cost.
What do you need for a quote?
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2D/3D drawings with hole diameter, depth, tolerance, position, quantity, material, and any heat-treat/finish requirements (STEP/IGES/DWG accepted).
Do you provide inspection reports?
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Yes. Diameter, straightness, and surface roughness reports available. CMM and dedicated gauges are calibrated with traceable records.
What processes do you use?
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Gun drilling and BTA; we choose based on diameter, depth, and chip evacuation to ensure stable quality and efficiency.