Is the cast steel gate valve a gate valve made of stainless steel？gate valve made of stainless steel

This statement is only a one-sided understanding of the two valves. In factThis statement is only a one-sided understanding of the two valves. In factThis statement is only a one-sided understanding of the two valves. In factThis statement is only a one-sided understanding of the two valves. In fact

This statement is only a one-sided understanding of the two valves. In factThis statement is only a one-sided understanding of the two valves. In factThis statement is only a one-sided understanding of the two valves. In factThis statement is only a one-sided understanding of the two valves. In fact