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Cutting tools, straight from the factory floor.

10% Our entire margin. That is the only markup between you and the machine that made it.

Danyang Chengzhong Tools Co., Ltd. manufactures step drills, serrated saw drills, HSS twist drill sets, screw and pipe extractors, countersinks and saw blades — from the heart of China's hardware industry.

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Factory directNo middlemen — you talk to the maker
OEM / ODMCustom specs, packaging & branding
Danyang, ChinaOne of the world's largest twist-drill clusters
Our entire margin
10%

Price = material + machining + 10%.
Nothing else gets added.

We are the factory. The middleman's cut is what you don't pay.

A trading company buys from a factory like ours and adds its own margin before the goods reach you. You never see that number — you just see a higher price. We removed it.

  • One margin, stated openly. 10% on top of production cost — the same 10% on 500 pcs or 50,000 pcs.
  • Quote breakdown on request. Ask and we show material, machining and our 10% as separate lines.
  • OEM is no exception. Your logo, your packaging — still cost + 10%.
Product Range

What we manufacture

Eight core categories of cutting tools and hardware accessories. Every item is produced and quality-checked in our own workshop — Tell us your target market and volume and we'll recommend the right specification.

Step Drills4–20mm · 4pc sets
01 — Drilling

Step Drills

  • 4pc cobalt set, 12–20mm, boxed
  • 4pc HSS titanium, 4–12mm
  • Step + saw drill combo, 4pc
See details →
Drill BitsHSS · bright & titanium
02 — Drilling

Twist Drill Sets

  • 100pc set — 50 bright + 50 titanium
  • 26pc & 13pc silver HSS sets
  • 5pc basic set, plus cobalt-coated line
See details →
Screw Extractorsstripped & broken
03 — Removal

Screw Extractors & Removers

  • 10pc heavy-duty broken-screw extractor
  • Tap extractor for broken taps
  • 2pc broken-pipe extractor, 1/2" & 3/4"
See details →
Saw Drillsserrated · titanium
04 — Cutting

Serrated Saw Drills

  • 18pc & 9pc titanium saw drill sets
  • 8pc set, M3–M8 sizes
  • 6pc & 3pc bubble-bag options
See details →
CountersinkHSS · deburr
05 — Finishing

Countersink & Deburring

  • 5pc HSS countersink set
  • Hex-shank deburring & chamfer tool
  • Combinations to your drawing
See details →
Saw Bladesreversible · hole saw
06 — Cutting

Saw Blades & Hole Saws

  • Reversible double-tooth saw blade
  • Spiral hole-saw set, metal & plastic
  • Other blade sizes to your drawing
See details →
Adaptershex · magnetic
07 — Accessories

Driver Adapters & Bits

  • 4pc hex wrench adapter set, colour-coded
  • 6pc magnetic screw bit set
  • Quick-change chuck + bit, 1/4" hex
See details →
Punchesauto · spring
08 — Workshop

Punches & Workshop

  • 3pc automatic center punch assembly
  • Center punch with spare tips
  • Angle-grinder tool set & drill water pump
See details →
Why Chengzhong

A manufacturing partner, not just a supplier

We are a production factory — which changes how we can work with you.

⚙

Factory-Direct Pricing

No trading company in the middle. Your quote starts from our actual production cost.

✎

OEM & Custom Work

Custom sizes, coatings, packaging and private branding — tell us the spec you need.

✓

Consistent Quality

Heat treatment, coatings and geometry are controlled in-house, batch after batch.

⇅

Flexible Ordering

Test orders and mixed containers welcome — start small, grow with us.

Inside Our Factory

See how your tools are made

Heat treatment, grinding, coating and QC run on our own line — ask us for the process sheet or a video call walk-through of any SKU you are evaluating.

Raw material

HSS & carbide steel selected to spec for every product line.

Machining

Cutting, grinding and fluting on our production line.

Coating

Titanium / black-oxide finishes applied for longer tool life.

QC & packing

Inspection before packing — sets, boxes or bulk as you need.

Looking for a reliable tool factory?

Tell us the product, quantity and target price — reply within 24 hours.

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