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[MW:33175] Consumable insert (QW 404.22) vs preplaced fillermetal (QW 404.58)

By Materials & Welding
What is difference between Consumable insert (QW 404.22) and preplaced fillermetal (QW 404.58) in ASME BPVC Sec IX?
Consumable inserts that conform to SFA-5.30 (ASME BPVC IIC), where as no such refrence or difinition for preplaced fillermetal.

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