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American Petroleum Institute 
	The API is a US trade association representing all aspects of the oil and natural gas industry, from large integrated companies to exploration and production, refining, marketing, pipeline and marine businesses, and service and supply firms.
	
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		Suite 1100 
		
		
		Washington, DC 
		API 
		USA 
	
	
 
Documents by this publisher 
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			Series details
		 
		
			Title
		 
		
			Year
		 
		
			Status
		 
	 
		
			
				Manual MPMS 14.3.3
			 
			
				Manual of petroleum measurement standards  Chapter 14.3 concentric, square-edged orifice meters. Part 3 - natural gas applications 
			 
			
				2013
			 
			
				Current
			 
		 
		
			
				Manual MPMS 14.3.3
			 
			
				Manual of petroleum measurement standards - Chapter 14: orifice metering of natural gas and other related hydrocarbon fluids-concentric, square-edged orifice meters. Part 3: natural gas applications 
			 
			
				2013
			 
			
				Withdrawn
			 
		 
		
			
				Recommended Practice 686
			 
			
				Machinery installation and installation design 
			 
			
				2009
			 
			
				Current
			 
		 
		
			
				Recommended Practice 1615
			 
			
				Installation of underground hazardous substances or petroleum storage systems 
			 
			
				2011
			 
			
				Current
			 
		 
		
			
				Recommended Practice 1632
			 
			
				Cathodic protection of underground petroleum storage tanks and piping systems (Withdrawn) 
			 
			
				1996
			 
			
				Withdrawn
			 
		 
		
			
				Specification 5L
			 
			
				Specification for line pipe 
			 
			
				2018
			 
			
				Current
			 
		 
		
			
				Specification 6D
			 
			
				Specification for valves 
			 
			
				2021
			 
			
				Current
			 
		 
		
			
				Specification 12P
			 
			
				Specification for fiberglass reinforced plastic tanks 
			 
			
				2016
			 
			
				Withdrawn
			 
		 
		
			
				Specification 12P
			 
			
				Specification for fiberglass reinforced plastic tanks 
			 
			
				2022
			 
			
				Current
			 
		 
		
			
				Standard 520-1
			 
			
				Sizing, selection, and installation of pressure-relieving devices, part 1 - sizing and selection. 10th edition 
			 
			
				2020
			 
			
				Current
			 
		 
		
			
				Standard 520-1
			 
			
				Sizing, selection, and installation of pressure-relieving devices, part 1 - sizing and selection. 9th edition 
			 
			
				2014
			 
			
				Withdrawn
			 
		 
		
			
				Standard 598
			 
			
				Valve inspection and testing 
			 
			
				2016
			 
			
				Withdrawn
			 
		 
		
			
				Standard 598
			 
			
				Valve inspection and testing 
			 
			
				2023
			 
			
				Current
			 
		 
		
			
				Standard 609
			 
			
				Butterfly valves: Double flanged, lug- and wafer-type 
			 
			
				2021
			 
			
				Current
			 
		 
		
			
				Standard 617
			 
			
				Axial and centrifugal compressors and expander-compressors 
			 
			
				2022
			 
			
				Current
			 
		 
		
			
				Standard 618
			 
			
				Reciprocating compressors for petroleum, chemical, and gas industry services 
			 
			
				2007
			 
			
				Withdrawn
			 
		 
		
			
				Standard 618
			 
			
				Reciprocating compressors for petroleum, chemical, and gas industry services 
			 
			
				2024
			 
			
				Current
			 
		 
		
			
				Standard 619
			 
			
				Rotary-type positive-displacement compressors for petroleum, petrochemical, and natural gas industries 
			 
			
				2010
			 
			
				Current
			 
		 
		
			
				Standard 650
			 
			
				Welded steel tanks for oil storage 
			 
			
				2020
			 
			
				Current
			 
		 
		
			
				Standard 1104
			 
			
				Welding of pipelines and related facilities 
			 
			
				2021
			 
			
				Current
			 
		 
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