... ,416,420,420F,430,430F3. Size: square bar: 5*5~50*50mm (or requested by customer ... used for manufacturing Spring, Screw, Bolt & nut, Steel mesh/coveyer belt, Shaft pin, Needle, Nail, Rope, Earphone wire ... products series:------------------------------------------------------------------stainless steel wireStainless steel bar (round bar, square bar, flat bar etc)Stainless steel pipestainless steel profile ...