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Recent content by leftyeng

  1. leftyeng

    Low-temp bolts vs Weathering bolts

    In similar climates, we have been using regular ASTM A325 Type 1 bolts and they perform fine. The client is requesting ASTM A320 L7. The goal is to find a compromise that the client is comfortable with, and thats why I would request testing to confirm the comparison of qualities, before making...
  2. leftyeng

    Low-temp bolts vs Weathering bolts

    Great - thanks! I will suggest we have the vendor do some charpy tests on both types and present us with the results.
  3. leftyeng

    Low-temp bolts vs Weathering bolts

    I have a question regarding ASTM A320M L7 low-temp structural bolts vs. ASTM A325M Type 3 weathering bolts. Curently our spec lists the A320s, but they are more expensive, harder to get and have longer lead times than the A325 Type 3s. Both types have similar material properties and the...
  4. leftyeng

    Low Temperature Bolting Specs

    I have a similar question regarding ASTM A320M L7 low-temp structural bolts vs. ASTM A325M Type 3 weathering bolts. Curently our spec lists the A320s, but they are more expensive, harder to get and have longer lead times than the A325 Type 3s. Both types have similar material properties and...
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