Heavy Metal & Tubes Limited (HMTL)
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Flattening Test
Flattening test mainly serves to detect microscopic internal and external flaws. It involves compressing a tubular ring between two planes parallely placed to a predetermined distance. Incipient cracks and internal or external defects which occur as result of this process are not permissible. The flattening test is conducted as described in ASTM A450 / ASTM A530 etc.
