Valve material pressure and temperature control table grey cast iron: Gray iron for nominal pressure PN ≤ 1.0MPa, the temperature of -10 ℃ ~ 200 ℃ of water, steam, air, gas and oil media. Gray cast iron commonly used brands: HT200, HT250, HT300, HT350. Malleable iron: Applicable to the nominal pressure PN ≤ 2.5MPa, the temperature of -30 ~ 300 ℃ water, steam, air and oil media, commonly used brands are: KTH300-06, KTH330-08, KTH350-10. Ductile iron: For PN ≤ 4.0MPa, the temperature of -30 ~ 350 ℃ of water, steam, air and oil and other media. Common brands are: QT400-15, QT450-10, QT500-7. In view of the current domestic technological level, the factory is uneven, the user often is not easy to test. According to experience, it is recommended PN ≤ 2.5MPa, the valve or the steel valve for safety. Acid-resistant high-silicon ductile iron: Applicable to the nominal pressure PN ≤ 0.25MPa, the temperature is below 120 ℃ corrosive media. Carbon steel: Applicable to the nominal pressure PN ≤ 32.0MPa, the temperature of -30 ~ 425 ℃ water, steam, air, hydrogen, ammonia, nitrogen and petroleum products and other media. Common brands WC1, WCB, ZG25 and high-quality steel 20,25,30 and low alloy steel 16Mn. Copper alloy: It is suitable for the media of water, seawater, oxygen, air, oil and so on with PN≤2.5MPa, as well as the steam medium with the temperature of -40 ~ 250 ℃. The commonly used grades are ZGnSn10Zn2 (tin bronze), H62, Hpb59-1 QAZ19-2, QA19-4 (aluminum bronze). High temperature copper: For nominal pressure PN ≤ 17.0MPA, temperature ≤ 570 ℃ steam and petroleum products. Common brands ZGCr5Mo, 1Cr5M0.ZG20CrMoV, ZG15Gr1Mo1V, 12CrMoV, WC6, WC9 and other brands. The specific choice must be in accordance with the provisions of the valve pressure and temperature specifications. NCVM-5200 V-Grooving Machine,Sheet Metal Equipment Router,grooving machine manufacturer | supplier | price | for sale | video demonstration | specifications | maintenance | parts | accessories FOSHAN RAGOS NC EQUIPMENT CO.,LTD. , https://www.ragosnc.com
Valve material pressure and temperature control table
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