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Extra Long Carbide Deep Hole Drill Bit with Internal Coolant
US$86.92-1,123.61
5 Pieces
Sample price:US$10.80/piece.Request sample
Product profile
Customization
AvailableCustomized
CustomizedStandard
Factory StandardModel NO.
RDS 16xD-30xD Deep Hole Coolant DrillLength
12-30 Times Diameter, Longer on RequestType
Twist Drill BitMaterial
Solid CarbideUsage
Metal DrillingCarbide Material
Solid Tungsten CarbideCoolant
Internal, Through-Tool ChannelsFlutes
2Drilling Depth
12-30 Times Diameter, Longer on RequestDiameter Range
D3-D16 mmPoint Angle
135 DegreesWorkpiece
Steel, Stainless Steel, Cast Iron, TitaniumStock Status
Made to OrderMade-to-Order Lead Time
About 15 Working DaysRaw Material
100% Original Carbide, No Recycled MaterialTransport Package
1 PC Per Plastic Tube; 5 PCS Per BoxSpecification
D3-D16mm, 12xD-30xD, Internal CoolantTrademark
DELEVELOrigin
Changzhou, JiangsuHS Code
8207709000Production Capacity
10000PCS/MonthKey features
Solid Carbide: ground from 100% original tungsten carbide rod, no recycled material.
Deep Holes: 16xD, 20xD, 25xD and 30xD series, D3-D16 mm; up to 50xD made to order.
Internal Coolant: coolant reaches the tip and flushes chips out of deep holes.
Long Drills to Order: gun drills, micro drills and extra-long drills on request.
For Many Materials: steel, alloy steel, stainless steel, cast iron and titanium alloys.
Made to Order: from 5 pieces, about 15 working days; drawing confirmed before production.
Measured While Grinding: tools are measured on the machine during grinding.
Fast Reply: we reply within one working day; inspection reports on request.
Company profile

Business Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableAverage Response Time: ≤2.53hTerms of Payment: LC, T/TInternational Commercial Terms(Incoterms): FOB, EXW, CIF
AI-Powered supplier vetting
SummaryCHANGZHOU DELEVEL TOOLS CO., LTD. is a China-based manufacturer/factory specializing in carbide drills, end mills, threading tools, modular tooling, and custom carbide tools. It reports ISO 9001 certification, more than 12 years of carbide-tooling experience, six production lines, six-to-ten R&D engineers, six-to-ten quality-control staff, and annual carbide end-mill output of 600,000 pieces. The supplier supports multiple customization modes, ODM, and OEM services for well-known brands, and reports inventory capability and off-peak lead times within 15 working days. However, written corrective-action and complaint-handling procedures are absent, overseas service infrastructure is limited, and the validity of manufacturing-capacity contracts and quality-assurance status is unknown. Financial-capacity entries are present for 2023–2025, but no sufficient non-monetary evidence establishes financial strength. Customer cases are not specifically documented.
Supplier typeThe supplier is explicitly identified as a Manufacturer/Factory and a limited company in China. Its listed products and business scope cover carbide and other metal tooling, consistent with a direct manufacturing supplier.
CertificationsThe supplier reports holding ISO 9001 certification for its management system. This is explicit evidence of a formal quality-management certification, although the slices do not provide certificate validity or scope details.
After-Sales capabilityThe supplier has no written procedures or records for corrective and preventive actions or effective complaint handling. It has inventory capability, but no overseas warehouse, showroom, agents, or branches; therefore, the documented after-sales framework is deficient despite some fulfillment support.
R&D capabilityThe supplier reports new products during the past year, ODM availability, and six-to-ten R&D engineers with total R&D experience stated at six-to-ten years. It lacks an available SDK, but the documented product-development and ODM activity supports innovation capability overall.
Production capacityThe supplier operates six production lines, reports 600,000 carbide end mills produced annually, employs six-to-ten quality-control staff, and states off-peak lead times within 15 working days. Inventory capability and a claimed on-time-delivery record further support production execution, although contract status and quality-assurance status remain unknown.
Customization capabilityThe supplier explicitly offers customization from samples, designs, full and minor customization, flexible customization, ODM services, and custom carbide tools. Its stated specialization in non-standard carbide tools and technical support directly supports strong customization capability.
Product Q&A
Q:Which depths are available?
A:
16xD, 20xD, 25xD and 30xD from D3 to D16 mm. 12xD is in our standard series, and drills up to 50xD are made to order.
Q:Are deep hole drills in stock?
A:
No. They are made to order in about 15 working days.
Q:Do I need a pilot hole?
A:
For holes deeper than about 12xD we recommend a short pilot hole first. Tell us your machine and coolant pressure and we advise the process.
Q:Can you supply gun drills or micro drills?
A:
Yes. Gun drills, small-diameter micro drills and extra-long drills are available on request; send the diameter, depth and material.
Q:Can they drill stainless steel and titanium?
A:
Yes. Tell us the alloy and hole depth, and we confirm the grade, coating and point design.
Send Inquiry
*To:
CHANGZHOU DELEVEL TOOLS CO., LTD.
CHANGZHOU DELEVEL TOOLS CO., LTD.*Content:
Supplier replies will be sent to your registered email
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