API RP 1115-2018 Design and Operation of Solution-mined Salt Caverns Used for Liquid Hydrocarbon Sto API STD 20L-2018 Qualification of Polymeric Seal Manufacturers for Use in the Petroleum and Natural AATCC 96-2012(E2019) Test Method for Dimensional Changes in Commercial Laundering of Woven and Knitt API STD 2015-2018 Requirements for Safe Entry and Cleaning of Petroleum Storage Tanks (EIGHTH EDITIO API RP 2027-2018 Ignition Hazards and Safe Work Practices for Abrasive Blasting of Atmospheric Stora API STD 6AV1-2018 Validation of Safety and Shutdown Valves for Sandy Service (THIRD EDITION) API TR 13M-5-2018 Procedure for Testing and Evaluating the Performance of Friction (Drag) Reducers i API SPEC 20F-2018 Corrosion-resistant Bolting for Use in the Petroleum and Natural Gas Industries (S