Ruby ball ,sapphire crystal is one of corundum gemstones. it is mainly characterized by wear resistance, high hardness, corrosionresistance and small friction coefficient. it is an ideamaterial for precision instrument, machinery and bearing; sapphire glass has good infrared transmission and chemical stability. it is also widely used in all aspects of infrared military equipment, such as far-infraredsight, night vision camera and so on.
Product Item: Electric Ball Valve. Material: ASTM A216 WCB. Size: 4 Inch, DN100. Pressure: Class 150 LB, PN20. Design Standard: API 6D. For ...
Product Item: Ball Valve. Design Standard: API 6D. Body Material: ASTM A182 F316. Nominal Diameter: 4 Inch, DN100. Pressure: Class 150 LB, PN20. Working temperature: -29℃ to +120℃. Face to Face: ASME B16.10. Test and Inspection: API 598.For ...
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