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A collection of featured documents from our library that are popular among our users or otherwise noteworthy.

API Std 650 14th edition

Welded Tanks for Oil Storage

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API Std 608 7th edition

Metal Ball Valves—Flanged, Threaded, and Welding Ends

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API RP 552 2nd edition

Transmission Systems

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API Spec 5L 47th Edition

Line Pipe

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API Std 653 5th edition

Tank Inspection, Repair, Alteration, and Reconstruction

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API RP 500 4th edition

Classification of Locations for Electrical Installations at Petroleum Facilities Classified as Class I, Division 1, and Division 2 4th 2023 C50004 $302.00 108 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

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API Std 1104 22nd edition

Welding of Pipelines and Related Facilities, Includes Errata 1 (2023) and Addendum 1 (2026)

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API RP 5C1 18th edition

Recommended Practice for Care and Use of Casing and Tubing

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API Spec 6A 21st edition

Specification for Wellhead and Tree Equipment

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API Std 53 (R2023) 5th edition

Well Control Equipment Systems for Drilling Wells

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All Documents

API Bull 2U 3rd edition
Bulletin on Stability Design of Cylindrical Shells
API Bull 2U 3rd edition

Bulletin on Stability Design of Cylindrical Shells

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API Bull 2V 3rd edition
Design of Flat Plate Structures
API Bull 2V 3rd edition

Design of Flat Plate Structures

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API Spec 2W 6th Edition (R2026) PDF Preview
API Spec 2W 6th Edition (R2026)

Steel Plates Produced by Thermo-Mechanically Controlled Processing for Offshore Structures

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API RP 2X 4th edition
Recommended Practice for Ultrasonic and Magnetic Examination of Offshore Structural Fabrication and Guidelines for Qualification of Technicians
API RP 2X 4th edition

Recommended Practice for Ultrasonic and Magnetic Examination of Offshore Structural Fabrication and Guidelines for Qualification of Technicians

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API Spec 2Y 5th edition
Specification for Steel Plates, Quenched-and-Tempered, for Offshore Structures
API Spec 2Y 5th edition

Specification for Steel Plates, Quenched-and-Tempered, for Offshore Structures

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API RP 2Z 4th edition
Recommendation Practice for Preproduction Qualification for Steel Plates for Offshore Structures
API RP 2Z 4th edition

Recommendation Practice for Preproduction Qualification for Steel Plates for Offshore Structures

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API Publ 300
The Generation and Management of Waste and Secondary Materials in the Petroleum Refining Industry
API Publ 300

The Generation and Management of Waste and Secondary Materials in the Petroleum Refining Industry

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API RP 3000 2nd edition PDF Preview
API RP 3000 2nd edition

Classifying and Loading of Crude Oil into Rail Tank Cars

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API Publ 301
Aboveground Storage Tank Survey: 1989
API Publ 301

Aboveground Storage Tank Survey: 1989

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API Publ 302
Waste Minimization in the Petroleum Industry: A Compendium of Practices
API Publ 302

Waste Minimization in the Petroleum Industry: A Compendium of Practices

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API Publ 303
Generation and Management of Wastes and Secondary Materials: 1989 Petroleum Refining Performance
API Publ 303

Generation and Management of Wastes and Secondary Materials: 1989 Petroleum Refining Performance

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API Publ 304 1st edition
Evaluation of Restoration Alternatives for Natural Resources Injured by Oil Spills
API Publ 304 1st edition

Evaluation of Restoration Alternatives for Natural Resources Injured by Oil Spills

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API Publ 305
Protecting Agricultural Crops from Ozone Exposures—Key Issues and Future Research Directions
API Publ 305

Protecting Agricultural Crops from Ozone Exposures—Key Issues and Future Research Directions

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API Publ 306
An Engineering Assessment of Volumetric Methods of Leak Detection in Aboveground Storage Tanks
API Publ 306

An Engineering Assessment of Volumetric Methods of Leak Detection in Aboveground Storage Tanks

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API Publ 307
An Engineering Assessment of Acoustic Methods of Leak Detection in Aboveground Storage Tanks
API Publ 307

An Engineering Assessment of Acoustic Methods of Leak Detection in Aboveground Storage Tanks

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API Publ 309
Current Status and Research Needs Related to Biogenic Hydrocarbons
API Publ 309

Current Status and Research Needs Related to Biogenic Hydrocarbons

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API Publ 311
Environmental Design Considerations for Petroleum Refining Processing Units
API Publ 311

Environmental Design Considerations for Petroleum Refining Processing Units

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API Publ 31101
Executive Summary: Environmental Design Considerations for Petroleum Refining Crude Processing Units
API Publ 31101

Executive Summary: Environmental Design Considerations for Petroleum Refining Crude Processing Units

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API Publ 315
Assessment of Tankfield Dike Lining Materials and Methods
API Publ 315

Assessment of Tankfield Dike Lining Materials and Methods

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API Publ 316
Identifying and Measuring Nonuse Values for Natural and Environmental Resources: A Critical Review
API Publ 316

Identifying and Measuring Nonuse Values for Natural and Environmental Resources: A Critical Review

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API RP 31A 1st edition
Standard Form for Hardcopy Presentation of Downhole Well Log Data
API RP 31A 1st edition

Standard Form for Hardcopy Presentation of Downhole Well Log Data

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API Publ 322
An Engineering Evaluation of Acoustic Methods of Leak Detection in Aboveground Storage Tanks
API Publ 322

An Engineering Evaluation of Acoustic Methods of Leak Detection in Aboveground Storage Tanks

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API Publ 323
An Engineering Evaluation of Volumetric Methods of Leak Detection in Aboveground Storage Tanks
API Publ 323

An Engineering Evaluation of Volumetric Methods of Leak Detection in Aboveground Storage Tanks

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API Publ 324
Generation and Management of Residual Materials: Petroleum Refining Performance 1990 Survey
API Publ 324

Generation and Management of Residual Materials: Petroleum Refining Performance 1990 Survey

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API Publ 325
An Evaluation of a Methodology for the Detection of Leaks in Aboveground Storage Tanks
API Publ 325

An Evaluation of a Methodology for the Detection of Leaks in Aboveground Storage Tanks

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