... 2.Electric Steel Pipe Tower 3.electric transimission line ste G-S steel pipe tower : 1.Product Specification:According to the ... Standard:Conforms to the drawing and design3.Voltage grade: 10KV, 35 KV, 60 KV, 110 KV, 220 KV, 500 KV, 750 ... case and the order. Generally, 1000 tons need ten days. G-S steel pipe tower