What Is A GF Saw Blade?
A GF saw blade is a small circular blade used on portable orbital tube cutting machines. These blades are common in stainless steel pipe installation, clean pipeline work, maintenance cutting and tube-end preparation before welding.
For industrial buyers, the important point is repeatability. A blade that fits the machine but has the wrong tooth count or thickness can still create burrs, vibration, short life or unstable cutting. The safest selection method is to confirm the machine data first, then match the tube material and wall thickness.
Start With Machine Fit
Before discussing material or tooth count, confirm the machine model, blade outer diameter, bore size, plate thickness, kerf, pin holes and maximum cutting capacity. Many GF / SL style blades use a 16mm bore, but the final fit should always be checked against the machine, current blade or a clear sample photo.
If you are not sure about the original blade code, send the machine model and a front/back photo of the current blade. A caliper photo for outer diameter, bore and thickness makes confirmation faster.
Match Tooth Count To Tube Wall Thickness
Thin-wall stainless steel tube usually needs a finer tooth count to reduce grabbing and improve end-face quality. Thicker wall tube needs more chip space, so a lower tooth count is often more stable. The blade should cut smoothly without forcing the machine.
Too many teeth on a thick wall tube can overload the cutting edge and pack chips. Too few teeth on a thin wall tube can catch the tube, increase burrs and create a rougher cut.
| Model | Tube Wall Thickness | Blade OD | Teeth | Suitable Tube Type | Note |
|---|---|---|---|---|---|
| SL63100 | 0.7-1.5mm | 63mm | 100T | General tube sizes | Most common |
| SL6364 | 1.0-3.0mm | 63mm | 64T | Larger tube diameter | |
| SL6872 | 1.0-3.0mm | 68mm | 72T | General tube sizes | Most common |
| SL6844 | 2.0-7.0mm | 68mm | 44T | General tube sizes | Most common |
| SL8034 | 5.0-12.0mm | 80mm | 34T | General tube sizes | |
| SL8044 | 5.0-10.0mm | 80mm | 44T | Smaller tube diameter | |
| SL8054 | 2.0-7.0mm | 80mm | 54T | General tube sizes | |
| SL8080 | 1.0-3.0mm | 80mm | 80T | Square tube cutting |
The listed SL series blades use a 16mm inner bore. Imported LS series cutting blades can use the same reference table. Final selection still depends on machine model, material, tube OD and actual cutting condition.
Selection Checklist For Buyers
| Selection Factor | What To Confirm | Why It Matters |
|---|---|---|
| Machine model | GF, SL, CM, FM or compatible portable tube cutter | Confirms blade OD, bore, pin hole and usable diameter range. |
| Tube material | Stainless steel, carbon steel, copper, aluminum or special alloy | Affects tooth geometry, coating choice and cutting speed advice. |
| Wall thickness | Thin wall, medium wall or thick wall range | Controls tooth count and chip space. |
| Tube OD and shape | Round tube, square tube or special profile | Helps choose the correct blade diameter and tooth number. |
| Cutting target | Welding preparation, maintenance cut, clean pipeline or batch production | Defines whether the priority is clean end, speed, life or repeatability. |
Common Cutting Problems And Causes
Information To Send For A Fast Recommendation
For a useful recommendation, send more than a blade diameter. The following information lets us check machine fit and cutting result before quoting.
| Data | Example | Why It Matters |
|---|---|---|
| Machine model | GF style orbital tube cutter, SL series, CM/FM compatible model | Confirms fit and cutting capacity. |
| Current blade photo | Front, back and side thickness photo | Confirms OD, bore, teeth and possible pin holes. |
| Tube data | 304 stainless tube, OD 38mm, wall 1.5mm | Guides tooth count and cutting setup. |
| Cutting result | Clean end required before welding, burr must be low | Defines the performance target. |
| Problem photo/video | Burr, vibration, broken teeth or short life | Helps diagnose the root cause instead of repeating the wrong blade. |
Final Recommendation
If you already have a working blade, start from the existing specification and improve only the problem point. If you are replacing an unknown blade, confirm the machine model, bore size and wall thickness range first. For repeat orders, keep one confirmed blade record for each tube material and wall thickness group.
Yansam can support GF and SL series replacement saw blades by sample, drawing or machine data. For distributors and industrial users, keeping confirmed specification records helps future orders stay consistent.