Home default The machine pillars/ columns are made of medium carbon steel , and its hardness can reach HRC55-58 The machine pillars/ columns are made of medium carbon steel , and its hardness can reach HRC55-58 Pvc Pipe September 16, 2019 Share: Facebook Twitter Pinterest The machine pillars/ columns are made of medium carbon steel , and its hardness can reach HRC55-58 ... Click to read moreOthers news:
