Wogulitsa ndi wogulitsa wa ASTM A249 Tubing

ASTM A249 / A249M – 16a

Nambala ya ASTM imasonyeza mtundu wapadera wa muyezo wa ASTM.

A249 / A249M – 16a

A = zitsulo zachitsulo;

249 = nambala yotsatizana yoperekedwa

M = mayunitsi a SI

16 = chaka choyambira kuvomerezedwa (kapena, pankhani yosinthidwa, chaka chosinthidwa komaliza)

a = ikusonyeza kusinthidwa kotsatira chaka chomwecho