... 1/8-10M X 4-1/16-10M goat head. 2.wellhead equipment parts ; API 6A standard 3.ISO/Environment ... hangers, crosses ,flange adaptor. frac head, tree cap etc) 2) Valve (FC/FLS gate valve, mud gate valve, chock valve ... a API/ISO certified enterprice →Head office in Shanghai ,2 plants in Yancheng, Jiangsu →Over 200 employees For More ... costs so that we can better serve our customers 2-5 1/8-10M X 4-1/16-10M ...