Low-temperature carbon steels have been developed chiefly for use in low-temperature equipment and especially for welded pressure vessels. They are low- to medium-carbon (0.20 to 0.30%), high-manganese (0.70 to 1.60%), silicon (0.15 to 0.60%) steels, which have a fine-grain structure with uniform carbide dispersion.
Low temperature carbon steel pipes are covered by ASTM A333, the grade nominal wall seamless and welded carbon steel pipes, which can be harnessed at low temperature applications and other services that equire notch toughness. They should be of seamless quality ASTM A333 Grade 1 low temperature pipes devoid of see pages and with a uniform body and should be minimally affected due to corrosion and mechanical stress. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse affect on low-temperature impact properties.
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Additionally Carbon Steel pipe ASTM A333 grade 3 increase the overall work potential of a piping system, with their polished bodies countering any possible corossion attack.
Standard Specifications for LTCS Pipes and Tubes
Specifications- ASTM A333/ ASME SA333
Standard- ASTM, ASME and API
Size- 1/2 '' - 24''
Schedule- SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All schedules
Types- Seamless/ ERW/ Welded/ Fabricated/ CDW
Length- Single Random, Double Random and Required length, Custom size- 12 metres
Form- Round Pipes/ Tubes, Square pipes/ tubes, Rectangular pipes/ tubes, Coiled tubes, U Shape, Pan cake coils, Hydraulic tubes
End- Plain End, Beveled End, Threaded
Grades- ASTM A333 Grade1, ASTM A333 Grade 3, ASTM A333 Grade 6, ASTM A334 Grade 1, ASTM A334 Grade 6.
Application of LTCS
They can be found in heat exchangers, chemical containers, pipelines and throughout the food industry.
It can be used as a fabricated material where high temperature petroleum gases or steam production gases are stored such as pressure vessel
Benefits of LTCS
Low carbon content eliminates carbon precipitation in the welding process
Can be used in severe corrosive environments
Weld annealing only required in high stress applications
**The content of this article is taken from web open source. The blogs are intended only to give technical knowledge to young engineers. Any engineering calculators, technical equations and write ups are only for reference and educational purpose.
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