
直缝电焊钢管
Steel pipes with a longitudinal electric(resistance) weld
Steel pipes with a longitudinal electric(resistance) weld
Cold rolled low carbon steel sheets and strips for vitreous enamelling
Wrought titanium and titanium alloy for surgical implants
Wrought copper and copper alloys-Extruded rods and bars
Test method for measuring diameter of semiconductor wafer
Silicon epitaxial wafers
Pig iron used for spheroidal graphite cast iron
Test method for carrier concentration of silicon epitaxial layers Capacitance-voltage method
Test method for crystallographic perfection of epitaxial layers in silicon-Etching technique
Test method for sheet resistance of silicon epitaxial,ndiffused and ion-implanted layers using a collinear four-probe array