Half Price Standard Code

Specification for Validation of Wellhead Surface Safety Valves and Underwater Safety Valves for Offshore Service, Second Edition
standard by American Petroleum Institute, 02/01/2013

Addendum 4 to Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition (ISO 10423:2009 Modification)
Amendment by American Petroleum Institute, 06/01/2016

Welding Pipe Lines and Related Facilities, 14th Edition
standard by American Petroleum Institute, 01/01/1977

Fire Test for Valve with Automatic Backseats, Includes Errata 1 (2008)
standard by American Petroleum Institute, 04/01/1999

Errata to Design Calculations for Pressure-containing Equipment, First Edition
Amendment by American Petroleum Institute, 05/01/2014

CRA Line Pipe, Fourth Edition, Includes Errata (2015)
standard by American Petroleum Institute, 03/01/2015

General-purpose Form-wound Squirrel Cage Induction Motors-185 kW (250 hp) through 2240 kW (3000 hp), Second Edition
standard by American Petroleum Institute, 05/01/2017

Drilling and Well Servicing Structures, Third Edition
standard by American Petroleum Institute, 01/01/2008

Use of Duplex Stainless Steels in the Oil Refining Industry, Third Edition
standard by American Petroleum Institute, 02/01/2015

Data sheets for API Std 541
standard by American Petroleum Institute, 12/08/2014