How to read and interpret a Mill Test Certificate (MTC) for ASTM fittings?

Andy Jiang

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What tests are standard for carbon steel reducers (hydrotest, PMI, UT, RT)?

Doris Liu

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What red flags indicate an unreliable supplier for high-pressure carbon steel fittings?

Lisa Sun

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How to request an inspection plan (MTC, PMI, NDT) from a pipe fitting manufacturer?

Andy Jiang

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What minimum order quantities (MOQs) are typical for custom-size steel flanges?

Doris Liu

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What factory capabilities should I check for forged carbon steel flanges?

Lisa Sun

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How to evaluate a Chinese supplier for ASTM A234 WPB elbows?

Andy Jiang

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How to select the correct flange bore for pipeline applications?

Doris Liu

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What is the difference between nominal pipe size (NPS) and flange DN/PN sizing?

Lisa Sun

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