Grain scatter in micro-drills
PCB and electronics tools need exceptionally fine, uniform grain. That is the homepage brief for rod stock used as micro-drills and micro-end mills.
Zhuzhou · Hometown of Hard Metal
Tungsten carbide rods, dies and wear parts for shops that grind or run tools every day
Ruiao sinters and finishes carbide in Zhuzhou so toolmakers and stamping plants can start from dense bar, a print-matched die, or a wear part that outlasts steel.
Cutting tools and saw tips
Carbide that holds an edge on steel, wood, stone and composites
End mills, TCT blades, saw tips, brazed tips and rotary burrs from the same mill that supplies the blanks behind them.
Drawings and samples welcome
Custom carbide from a print when the catalog size is not the size you run
Cold heading dies, wire-drawing nibs, bushes, rolls and OEM parts. HIP sintered. Small lots accepted on the custom line.
What we actually make
Carbide for the tool, the die and the wear surface
Zhuzhou Ruiao Tungsten Carbide Co., Ltd. sits in China’s hometown of hard metal. The published line is rods and strips, cutting tools, cold-work dies, rolls, and wear parts — plus OEM pieces from a drawing or a sample. Twenty-eight years of production experience is the claim on the homepage. ISO 9001 is stated on the custom-tools page. Capacity tonnage is not published here, so we do not invent it.
Carbide Blanks
Tungsten carbide rods, strips, punch pins and anti-vibration shanks used as tool blanks.
Carbide Cutting Tools
End mills, turning inserts, rotary burrs, saw tips, TCT blades and woodworking knives.
Carbide Molds & Custom Parts
Cold heading/forging/forming dies, wire drawing dies, rolls, bushes and custom carbide tools.
Carbide Wear Parts
Carbide balls, rings, grinding jars and pegs, flow-control cages and sandblasting nozzles.
The job, not the machine list
Four problems the mill is built to take
Steel dies that will not hold a campaign
Cold heading, forging, forming and wire drawing are the jobs we sinter dies and nibs for — from a catalog size or from your print.
Chatter on long-overhang turning
MFT, MFV and MFH anti-vibration carbide shanks replace a steel stick tool when the overhang starts to sing.
Wear parts that lose geometry
Balls, rings, nozzles, grinding jars and flow cages in carbide where steel washes out.
Specified this week
Start with a standard grade, or send the print
Every item below exists on the current catalog. Open the product page for published specs — nothing is padded with marketing hardness numbers.
Tungsten Carbide Rods
Solid tungsten carbide rods for drills, end mills, taps, and reamers. Ruiao supplies ultra-fine and general-purpose grades in straight or helical-coolant blanks
Tungsten Carbide End Mills
Solid carbide end mills covering square, ball nose, roughing, multi-flute and aluminum styles. Published substrate: C=90%, Co=10%, TRS>4000 N/mm2, hardness >92
Tungsten Carbide Cold Heading Dies
Tungsten carbide dies for cold punching and heading of screws and nuts. Designed for copper, aluminum and steel fasteners, screw nails and rivets. High impact r
Wire Drawing dies
Cemented carbide wire drawing dies for tungsten, molybdenum and stainless wire as well as high-precision wire used in electronics, instruments and aerospace. Ca
Tungsten Carbide Balls
Cemented carbide balls for bearings, valves, pens, flowmeters and grinding. Hardness greater than 90.5 HRA and density 14.9 g/cm3 on the product page.
TCT Saw Blade
TCT saw blades for plastics, steel, wood and construction boards including wood-cement board, MDF and porous concrete mineral fiber boards.
Customized Tungsten Carbide Tools
Custom tungsten carbide tools from drawings or samples. Source bullets: 100% raw material, HIP sintered, various sizes, OEM including small orders, and ISO 9001
MFT Modular Threaded Anti-Vibration Carbide Shank
Solid anti-vibration tungsten carbide shank with high rigidity and a damping effect intended to cut chatter on long-overhang CNC lathe work. The MFT style uses
Process on the homepage
Sintered finished · HIP sintered · Rough grinding
- 01
Sintered finished
Powder-metallurgy carbide brought to a finished sinter density before any grind.
- 02
HIP sintered
Hot-isostatic step used on rods, dies and tips when density and bending strength matter. The brazed-tips page notes an extra bending-strength margin versus conventional sinter.
- 03
Rough grinding
Stock removal before the finish grind. Ground rods are published at RA0.04 with ISO 286-2 h-series fits, including H6.
Who the parts run for
Industries named on the source site
Metal cutting, mining and geological drilling, wear-resistant components, oil and gas, molds and forming tools, automotive, precision electronics and PCB, woodworking and composites.
Metal Cutting & Machining
Drills, end mills and inserts that chip or wear out before the lot is finished.
Precision Electronics & PCB
Micro-drills that wander or chip because grain size is uneven.
Woodworking & Composites
High-fiber wood and composites that strip HSS and cheap carbide knives.
Automotive Manufacturing
Batch machining of automotive parts and mold steel with tools that will not hold size.
Molds & Forming Tools
Steel dies that mushroom, pick up or crack under heading and drawing loads.
Mining & Geological Drilling
Rock and abrasive ground that destroys unprotected steel bits.
Oil & Gas
Valves, cages and seats that wash out in abrasive or corrosive flow.
Wear-Resistant Components
Steel nozzles, rings and grinding media that lose geometry after a short campaign.
Ship from Zhuzhou
Sea freight for the lot. Express for the sample.
Those are the two routes printed on the homepage. Tell us the Incoterm you buy on; we will not invent a lead-time table that the source site does not publish.
Documents on file
Catalogs and a conflict-minerals declaration
Nine product PDFs plus the 2022 3TG conflict-minerals-free declaration sit on the downloads page. WhatsApp +8618307332261 is printed on the end-mills catalog.
Send the grade, the size and the drawing
WhatsApp or email. No web form — the quote starts in a real inbox.