... Thread type:ISO,DIN,BS,JIS,ANSI,GB 4.Thread spec.:G,R,NPT 5.Size:20mm-75mm ppr ball ... .6MPa.3. Design standard: GB/T8464-20084. Pipe thread standard: ISO2285. Connection: Hot Welding.6. Size: 20mm ... no rust, anti-bacterial.3. Light weight, high strength and high impact strength.4. Convenient installation, reliable, recycled, ... for other industries and agriculture. High quality double-head PPR ball valve