Diamond Wire
Steel cable threaded with diamond beads, for quarry saws, multi-wire saws and profiling machines.
- Quarry extraction
- Multi-wire slab production
- Profiling
Best to buy: Feb–Apr, Sep–Nov
Read guideSee diamond wire vendors
Tools & Abrasives buying guideLast updated October 2026
Diamond Saw Blades and Segments
Match the bond to the stone and everything else follows.
- Price level
- Mid-range
- Best to buy
- Feb–Apr, Sep–Nov
- Top sources
Photo: Mark Hunter, CC BY 2.0
Overview
What it is
Diamond blades cut stone by grinding, not slicing. Synthetic diamond grit is held in a metal bond on segments that are sintered, brazed or laser-welded to a steel core. As the bond wears it exposes fresh diamonds.
The rule of thumb is counter-intuitive: hard, dense stones such as granite and quartzite need a soft bond, so worn diamonds release and new ones surface. Soft, abrasive stones such as sandstone and limestone need a hard bond, or the segments wear away too fast. Gangsaw and block-cutter segments are bought separately to re-tip blades.
- Bridge-saw blades
- About 300 to 625 mm diameter
- Block-cutter blades
- Large discs, up to several metres
- Hand-tool blades
- 100 to 230 mm
- Segment types
- Sintered, laser-welded, brazed, turbo, continuous rim
- Bond rule
- Hard stone: soft bond. Soft, abrasive stone: hard bond
- Cooling
- Most stone blades run wet
Applications
Best used for
- Bridge sawsCountertop and tile cutting.
- Block cutters and gangsawsReplacement segments for re-tipping.
- Site cuttingHand-held cutters and grinders.
- Mitres and tilesThin-rim blades for chip-free edges.
Origins
Which countries to source from
The producing countries that matter for diamond saw blades and segments, what each is known for, and a direct link to vendors there.
China Leading source
The world's largest producer, with a wide quality range
- Fujian, Hubei and Jiangsu toolmakers
South Korea
Premium segments and blades
- Ehwa
- Shinhan
Italy
Specialist blades for Italian machines
- Stone-district toolmakers
Austria
Premium tools
- Tyrolit
Timing
Best time of year to buy
Consumables are bought all year, so timing is about stock: order ahead of the Lunar New Year shutdown in China and the August break in Italy, and buy trial quantities at the spring and autumn fairs.
- Jan: slower or pricier
- Feb: best time to buy
- Mar: best time to buy
- Apr: best time to buy
- May: normal
- Jun: normal
- Jul: normal
- Aug: slower or pricier
- Sep: best time to buy
- Oct: best time to buy
- Nov: best time to buy
- Dec: normal
Best time to buy Normal Slower or pricier
- Chinese toolmakers close for Lunar New Year; place large orders by early December.
- Italian and Spanish makers slow in August.
- Hold four to eight weeks of stock of your fastest-moving tools to ride out shipping delays.
Import costs
Tariffs and import duties
Base duties for the main import markets, the extra US surcharge by origin, and the trade remedies to check before you quote a landed price.
HS codes
- 8202.39Circular saw blades (non-steel working part)
- 8202.99Parts, including segments
Base import duty (MFN)
United StatesFree MFNBut see the anti-dumping order on Chinese blades.
European Union2.7%
United Kingdom2%
Importing into the US? Add the 2026 origin surcharge
Section 301 rates in force since 24 July 2026, stacked on the MFN rate above.
- China+12.5% & 30112.5% Section 301 (2026) plus the legacy China Section 301 duty (25% on most stone and machinery lines), on top of MFN.
- South Korea12.5% min.Section 301 (2026) tops the duty up to at least 12.5% in total; no surcharge if MFN is already higher.
- Italy10% min.Section 301 (2026) tops the duty up to at least 10% in total; no surcharge if MFN is already higher.
- Austria10% min.Section 301 (2026) tops the duty up to at least 10% in total; no surcharge if MFN is already higher.
- US anti-dumping order on diamond sawblades and parts from China, in force since 2009 and continued in July 2026. Duty depends on the producer.
- Imports of diamond sawblades and parts from China now face a 12.5% Section 301 duty, replacing the previous 10% surcharge.
Rates checked October 2026. Indicative rates for planning, not a customs ruling. Duties depend on the exact tariff line, origin, trade agreements and the rules in force on the day of entry. Confirm with a licensed customs broker before you price an order.
Before you order
Buying checklist
- 1Tell the supplier the exact stone and machine (rpm, power); they'll choose the bond.
- 2Specify diameter, arbor, segment height and count.
- 3Consider silent cores for workshops.
- 4Track cost per metre cut, not the blade's price.
- 5Open (dress) new blades on an abrasive block before first use.
Price level: From cheap general-purpose blades to premium silent-core blades; cost per metre is what counts.
Vendor Network
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