API STD 6AR:2019

This standard identifies the requirements for repair and remanufacture of wellhead and tree equipment under a quality management system and manufactured in conformance with API Specification 6A for continued service when specified by the user/purchaser of the equipment.
This standard applies to equipment manufactured to editions of API 6A in which a product specification level (PSL) identifies the quality, material, and testing requirements for a specific product. Equipment identified as manufactured in conformance with API 6A prior to April 1986 (API 6A, 15th Edition) is outside the scope of this document. A repair and remanufacture specification level (RSL) is designated to provide the appropriate quality control requirements for the repair and remanufacture of wellhead and tree equipment under this standard.
This standard is not applicable to onsite repair at the equipment installation site.