API STD 6AR pdf download Repair and Remanufacture of Wellhead and Tree Equipment 8.2Repair of Assembled Equipment Repair of equipment shall not include remanufacturing (machining， welding, or heat treating) of pressure-containing parts and pressure-controlling parts. Repair of equipment shall require the following: a) Disassembly and cleaning shall conform to the repairer’sIremanufacturers documented requirements. Control procedures shall be included to segregate...