ASTM A249 Tubing thiab Cov Neeg Muag Khoom

ASTM A249 / A249M – 16a

Tus lej cim ASTM qhia txog ib qho qauv tshwj xeeb ntawm tus qauv ASTM.

A249 / A249M – 16a

A = cov hlau ferrous;

249 = tus lej sib law liag tau muab faib ua ntu zus

M = SI units

16 = xyoo ntawm kev saws txais thawj zaug (lossis, yog tias muaj kev hloov kho dua tshiab, xyoo ntawm kev hloov kho zaum kawg)

a = qhia txog kev hloov kho tom qab hauv tib lub xyoo