1 it mainly tests following kinds of ball: 80 100 120, It only test one kind at a time .when test the other transmission tubes should be closed. 2 The mold No is SF-2, and the falling....
Ningguo Sifang steel ball mold & equipment Co., Ltd.was established in August 2003, located in the largest wear-resistant materials production base - " capital" of the wear-resistant castings Anhui....