Medium Voltage Transmission Line Steel Power Pole with Yield strength 450 Mpa

Medium Voltage Transmission Line Connics Steel Power Pole with Yield strength 450 Mpa    Steel Material  All of our material are purchased from famous mill factory to assure the quality  A mill certificate issued by the mill factory with stamp and signature must be provided before unload the  material in our factory ,otherwise we have our reason to refuse the material .  Before put into production ,all the material must pass the chemical and physical analysis to ...