Since 1924, The American Petroleum Institute (API) has been the leader in developing equipment and operating standards for the oil and natural gas industry.

Each year API works with leading industry subject-matter experts to maintain our inventory of over 600 standards and recommended practices. API distributes over 250,000 documents annually worldwide, and continues to strive to enhance safety operations, improve quality assurance, and promote the global acceptance of petroleum products and best practices. API standards are designed to assist industry professionals improve the efficiency and cost-effectiveness of their operations, comply with legislative and regulatory requirements, safeguard health, and protect the environment.

Latest Publications:

• API Std 622
  Type Testing of Process Valve Packing for Fugitive Emissions, Third Edition


• API Std 2610
  Design, Construction, Operation, Maintenance, and Inspection of Terminal and Tank Facilities, Third Edition


• API Spec 15PX
  Specification for Crosslinked Polyethylene (PEX) Line Pipe, First Edition


• API RP 19G10
  Design and Operation of Intermittent Gas-lift Systems, First Edition


• API Std 603
  Corrosion-resistant, Bolted Bonnet Gate Valves - Flanged and Butt-welding Ends, Ninth Edition


• API RP 505
  Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Zone 0, Zone 1, and Zone 2, Second Edition


• API TR 6MET
  Metallic Material Limits for Wellhead Equipment Used in High Temperature for API 6A and 17D Applications, Second Edition


• API Std 19C
  Measurement of Proppants Used in Hydraulic Fracturing and Gravel-packing Operations, Second Edition


• API Spec 6AV1
  Specification for Validation of Wellhead Surface Safety Valves and Underwater Safety Valves for Offshore Service, Third Edition


• API Spec 10F
  Cementing Float Equipment, Fourth Edition


• API Spec 19SS
  Sand Screens, First Edition


• API RP 65-1
  Cementing Shallow Water Flow Zones in Deep Water Wells, Second Edition


• API RP 77
  Risk-based Approach for Managing Hydrocarbon Vapor Exposure During Tank Gauging, Sampling, and Maintenance of Onshore Production Facilities, First Edition


• API TR 5C3
  Calculating Performance Properties of Pipe Used as Casing or Tubing, Seventh Edition


• API Spec 5CT
  Specification for Casing and Tubing, Tenth Edition


• API RP 5C6
  Pipe with Welded Connectors, Third Edition


• API Spec 20F
  Corrosion Resistant Bolting for Use in the Petroleum and Natural Gas Industries, Second Edition


• API RP 5EX
  Design, Verification, and Application of Solid Expandable Systems, First Edition


• API RP 17Q
  Subsea Equipment Qualification-Standardized Process for Documentation, Second Edition


• API MPMS Chapter 7.2
  Temperature Determination - Portable Electronic Thermometers, Third Edition


• API MPMS Chapter 18.1
  Custody Transfer: Measurement Procedures for Crude Oil Gathered from Lease Tanks by Truck, Third Edition


• API MPMS Chapter 13.2
  Statistical Aspects of Measuring and Sampling Section 2 - Methods of Evaluating Meter Proving Data, Second Edition


• API Bull E3
  Wellbore Plugging and Abandonment Practices, Second Edition


• API MPMS Chapter 3.1B
  Standard Practice for Level Measurement of Liquid Hydrocarbons in Stationary Tanks by Automatic Tank Gauging, Third Edition


• API Std 20L
  Qualification of Polymeric Seal Manufacturers for Use in the Petroleum and Natural Gas Industries, First Edition


• API TR 980
  Monolithic Refractories: Installation and Dryout, First Edition


• API Spec 5L
  Specification for Line Pipe, Forty-sixth Edition


• API Std 976
  Refractory Installation Quality Control-Inspection and Testing of AES/RCF Fiber Linings and Materials, Third Edition


• API TR 17TR8
  High-pressure High-temperature Design Guidelines, Second Edition


• API RP 578
  Material Verification Program for New and Existing Alloy Piping Systems, Third Edition


• API MPMS Chapter 12.1 Part 2
  Manual of Petroleum Measurement Standards Chapter 12 - Calculation of Petroleum Quantities, Section 1 - Calculation of Static Petroleum Quantities, Part 2 - Calculation Procedures for Tank Cars, Second Edition


• API RP 1145
  Preparation of Response Plans for Oil Spills from Offshore Facilities, Second Edition


• API MPMS Chapter 14.7
  Mass Measurement of Natural Gas Liquids and Other Hydrocarbons, Fifth Edition


• API RP 934-E
  Closed Recommended Practice for Materials and Fabrication of 1 1/4 CR-1/2 Mo Steel Pressure Vessels for Service Above 825 °F (440 °C), Second Edition


• API MPMS Chapter 7.4
  Manual of Petroleum Measurement Standards - Chapter 7 - Temperature Determination: Section 4-Dynamic Temperature Measurement, Second Edition


• API MPMS Chapter 9.4
  Manual of Petroleum Measurement Standards Chapter 9 - Density Determination - Section 4 - Continuous Density Measurement Under Dynamic (Flowing) Conditions, First Edition


• API Std 2015
  Requirements for Safe Entry and Cleaning of Petroleum Storage Tanks, Eighth Edition


• API Spec 19OH
  Openhole Isolation Equipment, First Edition


• API RP 970
  Corrosion Control Documents, First Edition


• API MPMS Chapter 20.5
  Recommended Practice for Application of Production Well Testing in Measurement and Allocation, First Edition


• API MPMS Chapter 8.4
  Standard Practice for Sampling and Handling of Fuels for Volatility Measurement, Fourth Edition


• API MPMS Chapter 13.3
  Manual of Petroleum Measurement Standards, Measurement Uncertainty, Second Edition


• API TR 18TR4
  Evaluation of Welding Requirements as Applicable to API Product Specifications, First Edition


• API TR 18TR2
  Guidance to API Specification Q2, First Edition


• API Spec 5B
  Threading, Gauging, and Inspection of Casing, Tubing, and Line Pipe Threads, Sixteenth Edition


• API TR 10TR7
  Mechanical Behavior of Cement, First Edition


• API TR 934-F Part 3
  Subcritical Cracking of Modern 2 1/4 Cr-1Mo 1/4 V Steel Due to Dissolved Internal Hydrogen and H2 Environment, Research Report, First Edition


• API RP 1133
  Managing Hydrotechnical Hazards for Pipelines Located Onshore or Within Coastal Zone Areas, Second Edition


• API Spec 16F
  Specification for Marine Drilling Riser Equipment, Second Edition


• API Std 17F
  Specification for Subsea Production Control Systems, Fourth Edition


• API RP 13L
  Recommended Practice for Training and Qualification of Drilling Fluid Technologists, Second Edition


• API RP 1177
  Recommended Practice for Steel Pipeline Construction Quality Management Systems, First Edition


• API Technical Report 13TR1
  Stress Corrosion Cracking of Corrosion Resistant Alloys in Halide Brines Exposed to Acidic Production Gas, First Edition


• API Bull 1178
  Integrity Data Management and Integration Guideline, First Edition


• API TR 2578
  Flow Conditioner Installation and Effects on Turbine Meters, First Edition


• API RP 1109
  Line Markers and Signage for Hazardous Liquid Pipelines and Facilities, Fifth Edition


• API Std 20M
  Qualification of Suppliers of Machining Services for Use in the Petroleum and Natural Gas Industries, First Edition

New Translations:

• API Spec 10A (R2015), 24th Edition (Russian)


• API RP 576, 4th Edition (Spanish)


• API MPMS Chapter 20.2, 1st Edition (Spanish)>


• API Spec 5LD, 4th Edition (Russian)


• API Bull 5T1,11th Edition (Russian)


• API RP 13M (R2010), 1st Edition (Russian)


• API Spec 16F (R2010), 1st Edition (Russian)


• API Spec Spec 16R (R2010), 1st Edition (Russian)


• API RP 16Q, 2nd Edition (Russian)


• API RP 19D (R2015), 1st Edition (Russian)


• API 16J, 1st Edition (Russian)


• API RP 5A3 (R2015), 3rd Edition (Russian)


• API RP 5C5, 4th Edition (Russian)


• API RP 5C6, 2nd Edition (Russian)


• API Spec 5LCP (R2012), 2nd Edition (Russian)


• API RP 5SI (R2012), First Edition (Russian)


• API Spec 11D1, 3rd Edition (Russian)


• API Spec 7-2, 2nd Edition (Russian)


• API Spec 11B, 27th Edition (Russian)


• API Spec 11E, 19th Edition (Russian)


• API Spec 11AX, 13th Edition (Russian)


• API MPMS Chapter 8.5 (1st Edition) (Spanish)


• API MPMS Chapter 8.1 (4th Edition) (Spanish)


• API MPMS Chapter 17.12 (2nd Ed.) (Spanish)


• API MPMS Chapter 17.11, 2nd Edition (Spanish)


• API RP 5L1, 7th Edition (Russian)


• API RP 5L3, 4th Edition (Russian)


• API RP 5LT, 1st Edition (Russian)


• API RP 5LW, 3rd Edition (Russian)


• Std 1104, Twenty-First Edition (Portuguese)


• Spec 5L, Forty-fifth Edition (Portuguese)


• MPMS Chapter 6.2 (R2016), Third Edition (Spanish)


• MPMS Chapter 3.2 (R2013), First Edition (Spanish)


• MPMS Chapter 3.3 (R2011), First Edition (Spanish)


• API 510, Tenth Edition (Spanish)


• API RP 6DR, Second Edition (Russian)


• API Std 608, Fifth Edition (Russian)


• API Spec 6AV1, Second Edition (Russian)

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