China Carbon Steel Thread Rod DIN 975 DIN 976 Electro Galvanized, Hot DIP Galvanized, Zinc, Black Threaded Rods /Thread Bar /Thread Bolt, Find details about China Auto Parts, Threaded Rod from Carbon Steel Thread Rod DIN 975 DIN 976 Electro Galvanized, Hot DIP Galvanized, Zinc, Black Threaded Rods /Thread Bar /Thread Bolt