Welcome to Wellhead Systems, Inc. Welcome to Wellhead Systems, Inc., located in beautiful Hill City, Kansas. We specialize in providing high quality independent wellhead equipment per API 11IW and API 5B.  Sizes from 4-1/2" to 13-3/8". We use high quality CNC machines to manufacture our parts and have a quality assurance program second to none. Please feel free to browse our site. Can’t find what you are looking for? Contact Us! Click Here for Our Mission Statement Wellhead Systems. Inc. 710 W McVey Hill City, KS 67642 Phone: 785-421-2255 Fax: 785-421-2256 Email Us         Western Union