4 inch common nails

1, zinc pot workers to resolutely do duty and responsibility. Do not leave the post without permission, always observe the change of steel wire galvanized layer, and according to the analysis of the results, master asbestos block gap friction need how long to press, replace the pressing face; Adjust the working face; Until the four faces of the asbestos block are used up, maintenance workers continue to use it after repair when necessary to reduce the consumption of asbestos block.

Spring steel wire should have high tensile strength, elastic limit, endurance and fatigue strength, and resistance to impact and oscillation. The strength and endurance objectives, especially to prevent the occurrence of modification cracks, are the key to the consumption of spring wire. The inner quality and outer quality of the wire rod directly affect the function of the wire.