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size:nps 1/2-12(dn15-dn300)
pressure rating:class 150-1500(pn16-pn250)
base material: a182f304, a182f316, a182f51, a182f53,a182f55, a564630(17-4ph), monel, inconel
ball coatings: enp, chrome plating, tungsten carbide, chrome carbide,stellite, inconel , special.
seat coatings: seat spray welding ni55,spray welding stl ,tcc, ccc.,special material
roundness: 0.01-0.02
roughness: ra0.2-ra0.8
coaxiality: 0.05
packaging detail: wooden cases; pallet; containers
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