بنابراین, 17-4فولاد ضد زنگ PH is suitable for making turbine blades as it has high resistance to heat. This steel does not lose its strength even at high temperatures, which is important for turbine blades. صنعت نفت و گاز ; 17-4فولاد ضد زنگ PH is used in the oil and gas industry to make pipes deep below ...