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
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