Low Temperature Pipe, Valves, Fittings & Flanges

Trade Name
Grade 1 Low Temp
Grade 6 Low Temp
Grade 3 Low Temp
Seamless / Welded Pipe
A/SA333 Grade 1
A/SA333 Grade 6
A/SA333 Grade 3
Seamless / Welded Tube
A/SA333 Grade 1
A/SA333 Grade 6
A/SA333 Grade 3
Buttweld Fittings
A/SA420 Grade WPL6
A/SA420 Grade WPL6
A/SA420 Grade WPL3
Forged Valves
A/SA350 Grade LF2
A/SA350 Grade LF2
A/SA350 Grade LF3
Forged Fittings
A/SA350 Grade LF2
A/SA350 Grade LF2
A/SA350 Grade LF3
Forged Flanges
A/SA350 Grade LF2
A/SA350 Grade LF2
A/SA350 Grade LF3
Plate
A/SA516 Grades 60, 65, 70
A/SA516 Grades 60,65,70
A/SA203 Grade D*
       
Cast Valves
A/SA352
A/SA352
A/SA352
Grade LCB:
J03003
J03003
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Grade LCC:
J02505
J02505
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Grade LC3:
-----
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J31550

This table provides basic information for procurement of materials for use in low temperature services.

Carbon steel Grades 1 and 6 are impact tested at -50°F. Three and one half nickel Grade 3 material is impact tested for services down to -150°F.

A/SA333 pipe is available dual certified in Grades 1 and 6.

In addition to the materials listed, rolled and welded plate pipe manufactured in accordance with ASTM/ASME Specifications A/SA671 is available for low temperature service.

Plate Specifications A/SA516 Grades 60, 65 and 70 indicating their respective Tensile Strengths in ksi are normally used for the same services as Grades 1 and 6. Three and one half nickel material is manufactured from A/SA203 Grade D plate.

Charpy V-Notch Impact Testing is required.

Supplementary Requirements and Appendices are listed in some of these specifications.

Cast steel valves for low temperature service are normally offered in A/SA352 Grades LCB(65ksi Tensile) and LCC(70 ksi Tensile). Grade LCA(60ksi Tensile) material is listed in Specifications A/SA352, but is not a standard production item for valves.

*Specification A/SA203 Grade D has a Tensile Requirement of 65-85ksi. This meets Grade 3 requirements for the pipe and tube specifications addressed in this table. Grades B, E and F are available for items requiring higher tensile material, such as manufacture of Pressure Vessels.

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