Blast Furnace Drill Bits & Drill Rods Built for the Taphole
Cross bits, button bits, threaded rods, shank adapters and coupling sleeves for steel mills that cannot afford a stopped tap hole. Made in our own workshop, matched as one set, and shipped with batch-level hardness records.
- Ø28–120 mm bits
- T38 · R38 · T32 · R32
- 45# & 42CrMo steel
- Factory-direct from Tai’an
One workshop, seven parts of the same drilling system
Every item below is made to the same thread standard, so a bit bought this quarter still fits a rod bought last year.
Drill bitsBlast furnace drill bit
Cross, three-wing and button geometries from Ø28 to 120 mm, with brazed carbide tips and a flushing hole sized for your clay. Chosen against your tapping machine, rod thread and tapping frequency.
Drill rodsBlast furnace drill rod
Quenched and tempered 45# steel or 42CrMo alloy, 32/38 mm, threaded T38, R38, T32 or R32. Straight, torque-true and heat-treated end to end so the rod does not fail behind the bit.
CarbideCarbide drill bit
Tungsten carbide inserts vacuum-brazed and ground to the wing profile. The bit holds gauge in abrasive clay instead of polishing the hole undersize and stalling the tap.
ButtonButton drill bit
Spherical carbide buttons in gauge and face positions, regrindable in your own workshop. The practical choice where the clay is abrasive and a cross bit wears too fast.
Complete toolsBlast furnace drilling tools
Bit, rod, shank adapter and coupling sleeve supplied as one matched set. Thread fit, overall length and impact transfer are checked together before the crate is closed.
ShankShank adapter
Hex shank adapters and striking bars machined to your drill’s chuck and to the rod thread you already run, so impact energy reaches the bit instead of the joint.
CouplingCoupling sleeve
Full-length threaded sleeves in 45# or alloy steel, with the wall thickness and thread engagement that keep joints from ballooning under repeated make-and-break.
A stopped tap hole costs more than the whole tool set
Most failures we are asked to solve are not a bad bit or a bad rod on their own — they are a mismatch. A 38 mm rod on a 32 mm bit, a shank adapter with the wrong hex, a coupling with too little thread engagement. We check the whole chain before shipping.
- Thread and length matched across bit, rod, coupling and shank adapter.
- Hardness and straightness recorded per batch, not per catalogue page.
- Non-standard drawings accepted — send the chuck, thread or worn part and we work from it.
Real parts, photographed on the floor
No stock renders: these are the bits, rods and sleeves that leave our yard.
Choose the right bit and rod before you order
Practical notes from the people who make the tooling — material grades, thread matching, wear patterns and cost per metre.
- 01Blast Furnace Drill Bits: A Buyer’s Guide to Life and Cost
- 02From Round Bar to Cross Bit: How a Blast Furnace Drill Bit Is Made
- 03Drill Rod Material Guide: 45# Steel vs High-Strength Alloy Steel
- 04Matching Rods, Bits and Couplings as One Drilling Set
- 05Russian Blast Furnace Drilling Tools: Suppliers and the Import Gap
- 06How Shandong Feiteng Forges Blast Furnace Drill Tool Quality
What steel mills ask us most
What is the difference between a blast furnace drill bit and a button drill bit?
A blast furnace drill bit is the complete tool that opens the tap hole; the cutting style is what changes. Cross and three-wing bits shear through clay with brazed carbide edges and suit sticky, uniform clay. Button drill bits carry spherical carbide buttons and hold gauge longer in abrasive clay, and they can be reground. We supply both, and will tell you which one your tapping practice actually needs.
Which thread should I choose for a blast furnace drill rod?
Match the thread to the machine and to the rest of the string, not to the price list. T38 and R38 are the common choices for 38 mm rods, T32 and R32 for 32 mm rods. If you are replacing one part only, send us the old rod or a photo of the thread and we will match it rather than change your whole set.
Do you supply shank adapters and coupling sleeves with the bits?
Yes. Shank adapters, striking bars and coupling sleeves are made in the same workshop, so the hex, the thread and the wall thickness are checked against the bit and rod you order. Complete blast furnace drilling tools can be shipped as one matched set.
How do I get a price?
Send the tap hole diameter, rod length, thread type, tapping frequency and clay condition. A photo of the worn part helps. We reply with a proposed bit, rod, shank and coupling combination and the lead time for that batch.
Send your furnace conditions, get a matched tool set
Tell us the taphole diameter, rod length, thread type and clay condition. We will come back with the bit, rod, shank adapter and coupling sleeve combination that fits your machine — and the batch lead time.
Shandong Feiteng Metal Products Co., Ltd. · Tai’an, China