ไทย 
Galvanized Steel Pipe
Galvanized Steel Pipe
Galvanized steel pipe / galvanized round pipe is a steel pipe in front of a circle. Made from GI coil, cut into sheets (Slit) and then rolled up to the desired size Can last longer than non-galvanized steel Often used in rustproof structures That is faced with moisture Can be used externally because of good rust resistance, such as roof structure, lamp post, road frame, etc.
