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