Umthengisi wempahla kunye nomthengisi we-ASTM A249 Tubing

I-ASTM A249 / A249M – 16a

Inombolo yokumisela i-ASTM ichaza uhlobo olulodwa lomgangatho we-ASTM.

A249 / A249M – 16a

A = iintsimbi zentsimbi;

249 = inani elilandelelanayo elinikiweyo

M = iiyunithi ze-SI

16 = unyaka wokwamkelwa kokuqala (okanye, kwimeko yokuhlaziywa, unyaka wokuhlaziywa kokugqibela)

a = ibonisa uhlaziyo olulandelayo kunyaka omnye