A large number of export black annealing square tube, black square tube, can be customized shaped square tube

About Product:Square tube, as the name implies, it is a kind of form of tube type, a lot of kinds of material of material can make the tube body, it is medium in, what, in what place, Most of the square tube steel tube, for most, after unpacking, smooth, curly, form circular tube welding, again by circular tube rolling into square tube and then cut into required length. Generally, 50 square pipes per package are mostly in the 10 * 10 * 0.8-1.5 ~ ~ 500 * 500 * 10 to 25 in the spot with large specifications. The square pipes are no means into structural square pipes, decorative square pipes, Construction square pipes, mechanical square pipes, etc