API 5L A106 Seamless Pipe For High-Pressure Systems

Description

API 5L Seamless Pipe is manufactured to the American Petroleum Institute's Specification API 5L, the global standard for line pipe used in pipeline transportation systems in the oil and gas industry. Produced without a welded seam, this pipe offers superior strength, uniform wall thickness, and exceptional reliability for conveying gas, water, and oil.

API 5L A106 Seamless Pipe Chemical Composition

Sources American Standard A106 / A106M Table 1 Chemical Requirements

API 5L A106 Seamless Pipe Mechanical Properties

Sources American Standard A106 / A106M Table 2 Tensile Requirements

API 5L A106 Seamless Pipe Application

• Long-distance oil and gas transmission pipelines
• Gathering and distribution systems
• Flow lines and compressor station piping
• Sour service (H₂S) environments – NACE MR0175 compliant grades available
• Onshore and offshore pipeline projects
• Water and slurry transportation

API 5L A106 Seamless Pipe Manufacturing Process

The process begins with solid steel rounds, or billets, being cut to a specified length and sent through a walking-beam reheat furnace, where temperatures reach nearly 2,300°F. After exiting the reheat furnace, the preheated rounds are turned into a tube shell in the rotary piercing mill as the billets are cross-rolled between two barrel-shaped rolls at a high speed.

The seamless shells enter mandrel mill, where they are rolled over a retained mandrel to provide the needed OD size and wall thickness for the next process. The process is carefully monitored using a state-of-the-art hot-wall measuring system. The shells are then reheated for final forming in a 24-stand stretch-reducing mill, where outside diameters are formed to customers’ exacting specifications. Wall thickness is again verified using a hot-wall measuring system. After being rotated and advanced on the walking-beam cooling bed, the pipes are batch cut and transferred to an in-process storage area, where they are handled by computer-controlled gantry cranes.

API 5L A106 Seamless Pipe Packing & Loading

a. 1/2"-2"Plain end with black oil paint, caps both ends, bundles with loading belt.

b. 2"-4"Beveled end with black oil paint, caps both ends, bundles with loading belt.

c. 10"-20"Beveled end with black oil paint, caps both ends, loose packed in to container.

Beveled End Pipe Marking Black Painting

Pipe end caps Protective Final inspection Bundles Packing

API 5L A106 Seamless Pipe Shipping By Container