مكان المنشأ
Guangdong, China
رئيس نمط
مقلاه, الجمالون, شقة, جولة, Custom made
اسم العلامة التجارية
Zhonggu Hardware
Item name
Black Zinc Plated Phillips Pan Head Rack Screw
Finish
zinc plated,black oxide,HDG,dacromet ,etc
Hardness
Surface Hardness,HV400~500 HV0.3,Core Hardness,320~380HV10
Heat Treatment
Tempering, Spheroidizing, Quenching, Spheroidizing annealing etc
Delivery time
15`~20 working days
Reliability test
mechanical dimentions, hardness test. salt spray endurance test