door lock  application scope: aluminum casement door series
technical data: confirmed to Q/FLSJ02-2002 standards
surface treatment: chromate treatment
product choice: Choose square axles, lock cores and screws as per the extrusions fitted out.
 door lock  material: active rod:GB/T11253 carbon steel with no lower mechanical performance than Q235 steel strip;lock block slide block & lock box: materials with no lower mechanical performance than GB/T16746 ZZNAL4CU1MG cast alloy;lock column: materials with no lower mechanical performance than GB/T905 Q235;gear & stubborn tongue: materials with no lower mechanical performance than GB/T702 08F;lock shell & lock panel: steel electroplating.The fixed rod is made of aluminum alloy.