... TongRun Machinery Co., Ltd. we are specialized in the large-scale welding, stamping, bending, punching, steel structure and all kinds of ... requirement.2)Surface treatment: according to drawing3)Certification:ISO9001:20084)Port: SHANGHAI/ZHANGJIAGANG,China5)Payment: T/T orL/C.Company introduction1 ... machining,drilling,powder coating,pressing part,polish,etc. wedge disc for Knife gate valve part