Low Temperature Seamless & Welded Pipe

Grade 1, Grade 6, Grade 3 - Low Temp Seamless / Welded Pipe

U.S. Metals is the premier worldwide supplier for all your Low Temperature Seamless / Welded Pipe A333 / SA333 needs.

Our ability to provide Low Temperature Seamless & Welded Pipe on a project basis is one of our strongest capabilities and is unmatched in our industry.

Turnarounds or outages, planned retrofits or emergency situations, grassroots projects worldwide; U.S. Metals has the experienced staff to assist you on all of your specialty alloy requirements, no matter how detailed the specification, no matter how difficult the situation.

New industry requirements, not an issue. We work closely with agencies like EPRI along with our utility and refining clients to be on the cutting edge of new industry requirements that affect your high energy/high temperature piping systems.

Our inventory is evolving to meet the new specifications that prevent current issues as creep cracking and hardness problems.



  • 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

    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 an Appendix also address impact testing in this specification.

  • The specification listed above reflects the common materials required for manufacture and fabrication of items for use in Low Temperature Service. 
Ordering information for this specification should address the following:
1) Quantity.
2) Seamless or welded.
3) Grade
4) Size and schedule / average wall thickness.
5) Specific or random lengths.
6) Any end condition desired other than plain ends.
7) Test Report requirements.
8) Any supplementary or special requirements.
Information provided in this page is in accordance with the 2013 Edition of the ANNUAL BOOK OF ASTM STANDARDS
Refer to ASME B & PV Code Section II for non-identical A/SA requirements.