API STD 6AV1-2018 Validation of Safety and Shutdown Valves for Sandy Service (THIRD EDITION) API STD 976-2018 Refractory Installation Quality Control - Inspection And Testing Of Aes_Rcf Fiber L API MPMS 22.4-2018 Manual of Petroleum Measurement Standards, Chapter 22.4 Testing Protocol for Pres API STD 6FA-2018 Standard for Fire Test for Valves (FOURTH EDITION; ERTA 1_ JULY 2018; ERTA 2_ AUGUS API TR 13M-5-2018 Procedure for Testing and Evaluating the Performance of Friction (Drag) Reducers i API STD 2015-2018 Requirements for Safe Entry and Cleaning of Petroleum Storage Tanks (EIGHTH EDITIO API STD 20L-2018 Qualification of Polymeric Seal Manufacturers for Use in the Petroleum and Natural 化工过程设备的选型和设计(第三版) Chemical Process Equipment Selection and Design Third Edition