... valve Brass ball valve: 1,Size: 1/4".3/8',1/2',3/4',1',11/4',11/2',2',21/2,3',4'2,Certificate: ISO9001 , ... required.Production step :1) purchasing the material and forged the semi-products .2) processing the semi-products in workshop .3) assembling ... in pressure and checking quality of the goods5) package6) deliveing the goods on time .PACKAGE:1) the package standard : standart export carton, box . 2 ...