API 5L Offshore Service Pipes

API 5L Offshore Service Pipes is made as per the American Petroleum Institute specification. API 5L is used in transportation system. In industries such as Textile, Dairy, Oil & Gas, Petrochemical, Sugar, Paper, Chemical & Fertilizers, Engineering, Power Generation and Nuclear Industries, the API 5L Seamless Pipes could be used as a fluid pipe, water pipe, line pipe, structure steel tube, and piling tubes.

API 5L Seamless Pipe is manufactured in compliance with the International Organization for Standardization (ISO) 3183 standards. This standardizes the standards for the petrochemical, refining and natural gas sectors for products, facilities, and offshore structures.

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More about API 5L Offshore Service Pipes.

Pipelines are classified in three categories:

  • Infield Pipelines transport fluids within the field. They are often called flowlines or feeder lines. Infield Pipelines carry a mixture of oil, gas and water from the subsea wells to a manifold or directly from the well to the process platform. A smaller number of infield lines carry processed water from the platform to injection wells for disposal.
  • Export Pipelines transport processed oil or gas from the platform to the coast. If the pipeline carries a mixture of oil and gas  then it is a multi-phase pipeline. If the pipeline carries only oil or only gas, then it is an sigle-phase pipeline.
  • Transmission pipelines carry oil or gas from one coast to another mainly, the same way as a tanker transfers oil for trading purposes.

1.2. Typical pipeline diameters

It is always useful to have a rough idea of typical pipeline diameters for each type of pipeline

 Diameter [Inches]Length [km]
Gas lift flowlines: 2″ 
Water injection:6″sss
Oil production flowlines  
Export Pipelines14″ 
Oil production from manifold12″ 
Water injection to Manifold10″ 
Test flowline8″ 

3.1. Pipeline types

Steel pipelines

Grade from X52 to X70. Diameters from 2” to 48”. Wall thickness up to 42 mm. Stell pipeline transport products that are aggressive to steel

Flexible pipelines

Composite pipe structure. Diameters from 2” to 20”. Flexible are used as infield pipelines for aggressive products. Low cost installation in reel-lay. High pipeline manufacturing cost and few suppliers.

Duplex pipelines

Special pipeline which is resistant to aggressive products. Expensive to fabricate and to weld

Cladded or lined with stainless steel

Steel pipeline with liner. Less expensive then Duplex. Fabrication and welding remains expensive

Steel chromium pipelines

Steel with 13%Cr. Less expensive to fabricate. Can withstand aggressive fluids. Expensive welding

We have the complete range of pipes in both PSL1 and PSL2 in seamless and welded to meet your needs. Plus, we can ship globally with a fast turn-around time at the best price.

PSL1 and PSL2 are the two product specification levels which the Technical Committee accepted.

PSL 1 contains standard quality pipes, while PSL 2 pipes have specific chemical & mechanical properties and their testing requirements are also special.

As a manufacturer and supplier it gives us greater control over delivery schedules and custom orders for our client’s.