... (requested by customer)4. Application: Widely used for manufacturing Spring, Screw, Bolt & nut, Steel mesh/coveyer belt, Shaft pin, Needle, Nail, Rope ... stainless steel material with well-equipped testing equipment and strong technical force, specializes in the business of stainless steel materials, such as stainless steel wires, stainless steel bars, stainless steel pipes, stainless steel ...