Galvanized Steel Pipe & Black Steel Pipe. 1.Shap Rectangular, Square and Round. 2.Black material, hot dip galvanized steel material. 3.Quality, we can guarantee the product's quality, welcome to come and test the products. 4.Delivery time super fast delivery, stock sizes only 2 days. New sizes will need about 10 days to produce.Galvanized Steel Square Tubing factory, Buy good price coated hot dipped steel pipe square rectangular oval tubeSome results are removed in response to a notice of local law requirement. For more information, please see here.