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Q
How many types of steel bars are there?
A
How many types of steel bars are there?
1.Carbon Steel Rebars

This is the most common type of rebar and is sometimes referred to as a "black bar." It's extremely versatile but it corrodes more easily than other types, making it inappropriate in areas that are subject to high humidity or in structures that are frequently exposed to water. Many consider carbon steel rebars to be the best option in all other types of construction, however.
2.Welded Wire Fabric

Welded wire fabric (WWF) is made from a series of steel wires arranged at right angles and electrically welded at all steel wire crossings. It can be used in slab-on-ground slabs where the ground has been well compacted. A heavier fabrication of welded wire fabric can be used in walls and structural floor slabs. This is commonly used in road pavement box culverts, drainage structures, and in small concrete canals.
3.Sheet-Metal Reinforcing Bars



Sheet-metal reinforcement is commonly used in floor slabs, stairs, and roof constuction. Sheet-metal reinforcing is composed of annealed sheet steel pieces bent into corrugations of about one-sixteenth of an inch deep with holes punched at regular spacing.
4.Epoxy-Coated Rebars
Epoxy-coated rebars are expensive and used in areas that will be in contact with salt water or where a corrosion problem is imminent. The only problem is that the coating can be very delicate, so bars should be ordered from a reputable supplier.
5.European Rebars
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6.Stainless Steel Rebars
Stainless steel can be used as an alternative reinforcing steel bar with carbon steel reinforcement. Using stainless steel reinforcing bars will not create galvanic corrosion, and it can be a cost-effective solution in areas subject to corrosion problems or where repair is difficult and expensive. These rebars will cost at least eight times more than epoxy-coated rebars, however.
7.Galvanized Rebars
Galvanized rebars are 40 times more resistant to corrosion than carbon steer rebars, making them ideal for structures that will be heavily exposed to wet and humid conditions. They're pricey, however.
8.Expanded Metal or Wire Mesh Rebars
Expanded metal or wire mesh reinforcement is another good product for concrete. Expanded metal is made by shearing a sheet of steel into parallel lines that are then expanded to form a diamond shape or a square shape between each cut. Expanded metal is commonly used as reinforcement in areas where a considerable thickness of plaster is required, or to reinforce light concrete construction. Wire mesh reinforcement can be used on sidewalks, small concrete pads, or walkable surfaces that don't receive high live or load charges.
9.Glass-Fiber-Reinforced-Polymer (GFRP) Rebars
Similar to carbon fiber, GFRP rebars will not corrode—ever, under any conditions. You'll pay dearly for that, however. These rebars can run 10 times the cost of epoxy-coated rebars.

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