Product Specification Levels: PSL1 & PSL2 

For different environment, there will be different requirements for API 5L line pipes. Some line pipe are used in ordinary environment, and the PSL1 is ok for pressure or mechanical requirements, but for some severe environment, there need to regulate additional requirements to suit for corrosive environment or high temperature environment etc.

In the standard of API 5L for line pipes of latest edition, there are two product specification level: PSL1 and PSL2. API 5L Specification is the result of harmonizing the requirements of the following standards:

• API Spec 5L;
• ISO 3183-1:1996;
• ISO 3183-2:1996;
• ISO 3183-3:1999.

In the preparation of this second edition of ISO 3183, the technical committee recognized that there are two basic levels of standard technical requirements for line pipe and, therefore, agreed to establish requirements for two product specification levels (PSL 1 and PSL 2). Level PSL 1 provides a standard quality level for line pipe. Level PSL 2 has additional mandatory requirements for chemical composition, notch toughness and strength properties and additional NDE. Requirements that apply to only PSL 1 or to only PSL 2 are so designated. Requirements that are not designated to a specific PSL designation apply to both PSL 1 and PSL 2. A table comparing this edition of ISO 3183 with the with the predecessor International Standard ISO 3183 (all parts) and API Spec 5L and used in the harmonization of these documents is given for information in Annex M in API 5L 44th edition.

The technical committee also recognized that the petroleum and natural gas industry often specifies additional requirements for particular applications. In order to accommodate such needs, optional additional requirements for special applications are available, as follows:

• PSL 2 pipe ordered with a qualified manufacturing procedure (Annex B);
• PSL 2 pipe ordered with resistance to ductile fracture propagation in gas pipelines (Annex G);
• PSL 2 pipe ordered for sour service (Annex H);
• pipe ordered as .Through the Flowline. (TFL) pipe (Annex I);
• PSL 2 pipe ordered for offshore service (Annex J).

If you require PSL2, it means pipes are used for natural gas pipe or crude oil line pipe where there are high requirements for pipe pressure, pipe anti-corrosion ability, high mechanical strength etc. But if you just need PSL1, then it’s used as distribute line pipes. And it requires less requirements. Both PSL1 & PSL2 API 5L line pipes, HYSP could manufacture API 5L line pipes as per your requirements and deliver to you with your satisfaction. You can contact us whenever you need API 5L LINE PIPE.

Download:  

API 5L Annex B – Manufacturing procedure qualification for PSL 2 pipe,  

API 5L Annex G – PSL 2 pipe with resistance to ductile fracture propagation,  

API 5L Annex H – PSL 2 pipe ordered for sour service, 

API 5L Annex I – Pipe ordered as “Through the Flowline” (TFL) pipe,

API 5L Annex J – PSL 2 pipe ordered for offshore service,

API 5L Annex M – Correspondence of terminology between ISO 3183 and its source documents