A blade is a steel strip with a toothed blade, which is the main part of the saw.
classification
A saw blade made of two metals welded together, specifically a carbon hacksaw and a high-speed steel saw saw. Used for cutting pipe parts, solid bodies, wood, plastics and all processed metals. Compared to the single metal saw blade, heat and wear resistance is higher, the life span is longer. Strong flexibility, can effectively avoid cutting in the process of fracture, breakage.
Carbon sand saw blade is used to cut glass, hardened steel, twisted fiber and ceramic tile. Super heat and wear resistance, can cut all other saw blade or saw blade can not cut the material.

The cutting carbide can reach 300 mm/min, the cutting marble can reach 100 mm/min, the cutting flower stone can reach 40 mm/min, the cutting efficiency is dozens of times traditional reciprocating saws or wire cutting, the incision is narrow(only 1.2 mm/2mm), compared with the traditional reciprocating saws and disc saws can save 6 to 10 times the original cooking cost for users, these advantages are similar to the traditional saws.
High-speed steel saw blades are used for cutting pipe parts, solid bodies, timber, plastics and all metal that can be processed. The blade is harder than other high-speed steel. It is flexible and suitable for use with small tension saw frame. The center of the back of the saw band is not hardened to avoid cracking during cutting.

The carbon steel saw blade is used for cutting pipe parts, solid bodies, wood, plastics and all processed metals. Low cost, more generic.
So how do you choose a saw blade with a saw?
1. The length of life of the same band saw is determined mainly by a suitable blade depth, which is determined by the size of the band saw, the cutting speed(saw speed), the cutting force(saw speed) and the cutting pressure.

2. the size of the saw saw saw saw-saw blade saw too large and fewer teeth, will be unstable cutting, and because of the increased burden of each saw cutting, easy to make teeth teeth, collapse.
If the saw saw is too small, the sawdust can jam easily, and wear and tear soon after use. When cutting the workpiece of good toughness and more soft, should use coarsely serrated saw band as far as possible, if want to get good cut surface should choose the fine serrated saw strip.