wellhead and X-mas trees : 1)WP:2000-15000psi 2)work ... terms of API 6A SpecificationsMainly Type:Split type wellhead, integral type wellhead, electric pump wellhead, metal seal wellhead,double-pipe wellhead,multi-seat type wellhead, composite wellhead, etc Specifications: Working Pressure (psi ... brake valve , wedge brake valve Product Specification Level: PSL1~PSL4 wellhead&christmas tree