The purpose of S-616 specification documents is to define a minimum common set of requirements for the procurement of line pipe in accordance with API Specification 5L, 46th Edition, April 2018, including Errata 1, May 2018 and ISO 3183, 4th Edition, 2019 for application in the petroleum and natural gas industries. The IOGP S-616 specification documents follow a common structure comprising a specification, also known as a technical requirements specification (TRS), a procurement data sheet (PDS), an information requirements specification (IRS) and a quality requirements specification (QRS). These four specification documents, together with the purchase order, define the overall technical specification for procurement.