TDS PDF

Guidance Document on Changes to API Q1, 9th Edition. Original standard API TR 18TR1-2015 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Guidance to API Spec Q2. Original standard API TR 18TR2-2017 in PDF full version. Additional info + preview on request

Document status: Withdrawn

Evaluation of Welding Requirements as Applicable to API Product Specifications. Original standard API TR 18TR4-2017 in PDF full version. Additional info + preview on request

Document status: Active

Round Robin Test Program for Development of Hardness Conversions for Precipitation Hardened Nickel Alloys and Martensitic Stainless Steels. Original standard API TR 21B-2024 in PDF full version. Additional info + preview on request

Document status: Active

Evaluating the Crack Initiation Toughness, Crack Resistance Curves, and Tensile Properties of Two Materials in High-Pressure Hydrogen Gas. Original standard API TR 21C-2025 in PDF full version. Additional info + preview on request

Document status: Active

A Study of the Effect of Thread Forming on the Susceptibility of Precipitation Hardened Ni-Based Alloy Fasteners to Hydrogen Embrittlement. Original standard API TR 21D-2024 in PDF full version. Additional info + preview on request

Document status: Active