Construction-Material-ASTM-A53-Schedule-40-Galvanized-Steel-Pipe-Gi-Steel-Tubes-Zn-Coating-60-400G-M2-with-High-Quality-Dn100X3-5mm-Galvanized-Steel-Pipe

Bahan pembinaan ASTM A53 Jadual 40 Paip Keluli Bergalvani, Gi tiub keluli Zn Coating 60-400G / M2 dengan kualiti yang tinggi, Dn100X3.5mm Galvanized Steel Pipe