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Dongcheng profile cut-off saw for steel: how to pick the disc and read the power rating before cutting angle iron and pipe
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RMB 678.00
This is a Taobao store based in mainland China. If your shipping address is outside mainland China, please confirm with the seller whether international shipping is available before purchasing.
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About this product
A profile cut-off saw like this is the bench tool used to cut angle iron, square tube and pipe to length before welding, and the buying decision comes down to two things rather than the badge on the motor. The first is the disc: check the diameter and the bore the machine is built for so replacements are easy to find, and match the disc to the material, because one intended for stainless behaves differently from a general-purpose steel disc. The second is the supply: confirm the rated voltage and current the machine draws, since a high-power saw needs a circuit that can carry it. The title also calls this a toothless saw, meaning it cuts with an abrasive disc rather than teeth - fast through ordinary steel, but with a rougher edge than a toothed cold saw leaves.
Product images
Pros & cons
Pros
- Cuts angle iron, square tube and pipe to length at the bench - the job a hand grinder struggles to do squarely
- Abrasive-disc design, the toothless saw the title refers to, goes through ordinary steel quickly
- Sold as a high-power machine, so it should cope with sections a small hobby saw stalls on - confirm the rating with the seller
- A clamp and a fixed base give a squarer cut than freehand grinding
- Sold under the Dongcheng brand, so matching discs and spares can be looked up by model
Cons
- Abrasive cutting leaves a rougher, burred edge and a heat-affected zone, unlike a toothed cold saw
- Check disc diameter, bore and maximum speed before buying replacements - a disc rated for the wrong speed is a safety risk
- Confirm the rated voltage and current; a high-power machine on a long extension lead may trip or lose power
- Cutting steel throws sparks and dust, so eye, face and hearing protection are not optional
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