API 5L A106 A179 A192 Seamless Line Pipe Description
API 5L A106 A179 A192 Seamless line pipe is manufactured through hot-rolling or cold-drawing processes, featuring a fully seamless structure that eliminates potential weld defects found in welded pipes. Due to the absence of welds, it exhibits superior pressure-bearing capacity, making it suitable for high-pressure, high-temperature, or corrosive environments. With uniform wall thickness and smooth inner surface, seamless line pipe offers minimal fluid resistance, making it ideal for transporting liquids or gases.
Manufacturing Process of Seamless Line Pipe
The production of seamless line pipe primarily involves the following steps:
(1) Billet Preparation: High-quality steel billets are selected, heated, and perforated to form hollow tube blanks.
(2) Hot Rolling or Cold Drawing: Hot rolling is suitable for large-diameter, thick-walled pipes, while cold drawing is used to produce high-precision, small-diameter thin-walled pipes.
(3) Heat Treatment: Processes such as normalizing and annealing are applied to adjust the mechanical properties of the pipe, enhancing its strength and toughness.
(4) Finishing & Inspection: The finished pipes undergo straightening, cutting, and internal defect detection using technologies like ultrasonic testing and eddy current testing.
API 5L A106 A179 A192 Seamless Line Pipe Specification
Production technology: Hot-rolled and cold drawn
Executive standards: API5L,ASME B36.10,ASTM A106/A53
Specification range:
OD: OD: 1/8-30 inch (10.3-762mm), WT: 0.049"-2.5" (1.24- 63.5mm)
WT: SCH10-SCHXXS
Materials: GrB,Q345B,X42-70,ST44,ST52 etc.
Testing: Eddy current/ Hydrostatic/Ultrasonic/ Intergranular Corrosion etc.
Packing: Bundles, seaworthy packing, or as required by customers.
Application:
API 5L A106 A179 A192 Seamless Line Pipes are widely used for petroleum, power generation, natural gas,coal gas,water and some solid materials, also shipbuilding, chemical fertilizer equipment etc.
Packaging
Package of carbon steel seamless pipe
Plastic caps plugged at the two sides of pipe ends
Should be avoided by the steel strapping and transport damage
Bundled signs should be uniform and consistent
The same bundle(batch) of steel pipe should be came from the same furnace.
The steel pipe has the same furnace number, the same steel grade, the same specifications.
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