UA-69298255-1 UA-69298255-2 American Petroleum Institute

American Petroleum Institute (API)

June 26, 2017


The American Petroleum Institute (API) publishes specifications (Spec.), bulletins (Bull.), recommended practices (RP), standards (Std.), and other publications  (Publ.) as an aid to procurement of standardized equipment and materials. These publications are primarily intended for use by the petroleum industry. However, they can be and are used by others in that they are referenced in a code or invoked in the purchase order/specification governing the design and construction of piping systems. For example API Specification 5L and the API Standard 605 are referenced in ASME B31.1, Power Piping Code.
The following documents, which relate to piping, are published by the API.

Specifications (Spec.)

  • Spec. 2B-96 --> Specification   for   the    Fabrication   of Structural  Steel Pipe

  • Spec. 6D-94 --> Specification for Pipeline  Valves (Gate, Plugs, Ball, and Check  Valves)

  • Spec. 5L-95 --> Specification for Line  Pipe

  • Spec. 5LC-91 --> Specification for CRA Line   Pipe

  • Spec. 6FA-94 --> Specification for Fire Test for   Valves

  • Spec. 6FC-94 --> Specification  for  Fire  Test  for  Valves with  Automatic Backseats

  • Spec. 15HR-95 --> Specification  for  High  Pressure  Fiberglass Line Pipe

  • Spec. 15LE-95 --> Specification   for  Polyethylene  Line Pipe (PE)

  • Spec. 15LR-90 --> Specification  for  Low  Pressure  Fiberglass Line Pipe

  • Spec. 5B-88 --> Specification   for  Threading,  Gauging, and Thread Inspection of Casing, Tubing, and Line Pipe Threads; Thirteenth Edition, Supplement 1, July 1990

  • Spec. 6FA-94 --> Specification for Fire Test for   Valves

  • Spec. 6B-92 --> API specification for Fire Test for End connections

  • Spec. 6FC-94 --> Specification  for  Fire  Test  for  Valves with  Automatic Backseats

  • Spec. 6FD-95 --> Specification  for  Fire  Test   for  Check Valves

  • Spec. 14A-94 --> Specification    for   Subsurface   Safety Valve  Equipment

  • Spec. 14D-94 --> Specification    for    Wellhead    Surface Safety Valves and Underwater Safety Valves  for  Offshore Service

Bulletins (Bull.)

  • Bull. 5C3-94 --> Bulletin on Formulas and Calculations for Casing, Tubing, Drill Pipe, and Line Pipe Properties

  • Bull. 6AF-95 --> Bulletin on Capabilities of API Flanges Under Combinations of Load

  • Bull. 6F2-94 --> Bulletin  on  Fire Resistance Improvements for API Flanges

Recommended Practices (RP)

  • RP 5A3 --> Recommended  Practice  on  Threaded Compounds for Casing, Tubing, and Line Pipe

  • RP 5A5-97 --> Recommended  Practice  for  Field  Inspection of New Casing, Tubing, and Plain-End Drill Pipe

  • RP 5B1-96 --> Recommended  Practice  for  Gauging and Inspection of Casing, Tubing, and Line Pipe Threads

  • RP 5L1-96 --> Recommended  Practice  for  Railroad Transportation of Line Pipe

  • RP 5L2-87 --> Recommended   Practice  for  Internal Coating of Line Pipe for Noncorrosive Gas Transmission Service

  • RP 5L3-96 --> Recommended Practice for Conducting Drop-Weight Tear Tests on Line Pipe

  • RP 51-5-75 --> Recommended   Practice   for   Marine Transportation of Line Pipe; First Edition

  • RP 5L6-79 --> Recommended Practice for Transportation of Line Pipe on Inland Water ways; First Edition

  • RP 5L7-88 --> Recommended Practices for Unprimed Internal Fusion Bonded Epoxy Coating of Line Pipe

  • RP 5L8-96 --> Recommended  Practice  for  Field  Inspection of New Line Pipe

  • RP 6G-82 --> Recommended  Practice  for  Through Flowline (TFL) Pump Down Systems

  • Bull 6AF-95 --> Technical Report on Capabilities of API Flanges under Combinations of Load

  • Bull 6AF1-91 --> Bulletin  on  Temperature Derating  of API Flanges Under  Combinations of Loading

  • Bull 6RS-90 --> Standardization  of  Valves  and  Wellhead Equipment

  • RP 1OE-94 --> Recommended Practice for Application of Cement Lining to Steel Tubular Goods, Handling, Installation, and Joining; Third Edition ISO 10409

  • RP 11V7-90 --> Recommended   Practice   for   Repair, Testing, and Setting Gas Lift Valves; First Edition

  • RP 15TL4-93 --> Recommended  Practice  for Care and Use Fiberglass Tubulars

  • RP 17B-88 --> Recommended   Practice  for  Flexible Pipe

  • RP 520 PTI-93 --> Recommended Practice for Sizing, Selection, and Installation of Pressure Relieving Devices in Refineries, Part I—Sizing and Selection

  • RP 520 PT II 94 --> Recommended  Practice Sizing, Selection, and Installation of Pressure-Relieving Devices in Refineries, Part II—Installation

  • RP 574-90 --> Inspection  of  Piping, Tubing, Valves, and Fittings; First Edition (Replaces Guide for Inspection of Refinery Equipment Chapter XI)

  • RP 1102-93 --> Recommended Practice for Liquid Petroleum Pipelines Crossing Railroads and Highways

  • RP 1107-91 --> Recommended Pipe Line Maintenance Welding Practices

  • RP 1109-93 --> Recommended  Practice  for  Marking Liquid Petroleum Line Facilities

  • RP 1110-97 --> Recommended   Practice  for  Pressure Testing of Liquid Petroleum Pipelines

Standards (Std.)

  • Std. 526-95 --> Flanged   Steel   Pressure-Relief   Valves Seat

  • Std. 527-91 --> Seat Tightness of Pressure Relief Valves

  • Std. 594-91 --> Wafer and Wafer-Lug Check   Valves

  • Std. 598-90 --> Valve Inspection and Testing

  • Std. 599-94 --> Metal Plug Valves—Flanged and Welding End

  • Std. 600-91 --> Steel  Gate  Valves—Flanged  and  Butt Welding Ends

  • Std. 602-93 --> Compact  Steel  Gate  Valves—Flanged, Threaded, Welding, and Extended Body Ends

  • Std. 603-91 --> Class  150, Cast, Corrosion-Resistant, Flanged-End Gate Valves

  • Std. 607-93 --> Fire   Test   for    Soft-Seated   Quarter Turn Valves

  • Std. 608-95 --> Metal  Ball Valves—Flanged, Threaded and  Welding Ends

  • Std. 609-91 --> Lug and Wafer Type Butterfly   Valves

  • Std. 1104-94 --> Welding of Pipelines and Related Facilities; Seventeenth Edition

Publications (Publ.)

  • Publ. 1113-93 --> Developing a Pipeline Supervisory Control Center

#Little P_Eng



Engineering Consultant Services

Please reload

Rate UsDon’t love itNot greatGoodGreatLove itRate Us


3705 Fonda Way #18 Southeast Calgary, T2A 6G9


+1 (587) 802-4050

Stay Connected

  • Facebook Social Icon
  • Twitter Social Icon
  • LinkedIn Social Icon
  • LinkedIn
  • yp-logo-original
  • Yelp Social Icon
  • Google Places Social Icon
  • Pinterest Social Icon
  • Tumblr
  • Facebook Social Icon
RSS Feed