A propane or oxy-acetylene torch is inserted throughout the mold to preheat the rail ends to the uninteresting pink warmth (close to 1800°F / one thousand°C). It is a vital phase to make sure the molten metal doesn’t amazing too speed… Read More
Hansheng Technology (Hebei) Co., LTd is located in Tangshan City , Hebei Province--the steel base of China. It is 150kms to Tianjin seaport and 150kms to Beijing—capital of China. It is a comprehensive manufacturing exporter of prime quali… Read More