For key and important parts with tensile strength greater than 1034Mpa, the stress should be removed at 200±10℃ for more than 1 hour before plating, and for carburized or surface hardened parts, the stress should be removed at 140±10℃ for more than 5 hours. The cleaning agent used for cleaning shall have no effect on the binding force of the coating and no corrosion on the substrate. Acid activation Acid activation solution should be able to remove corrosion products and oxide film (skin) on the surface of parts without excessive corrosion on the matrix.

Abandoned barbed wire guardrail network will generally choose classification pick up, classification gathering pick up and other methods, better to promote the better use of the whole highway guardrail network, abandoned metal guardrail network is still common copper mesh profile.

The application range of small hexagonal net is also relatively wide, can be used for building wall fixed insulation layer, pipeline, boiler fixed insulation, decoration and other fields.

1, pasture installation of barbed rope material electric galvanized barbed rope and hot-dip galvanized barbed rope are economical choices. The products are durable and low in price.

(4) Stop the use of more than two strands of galvanized iron wire around the operation method.

Hot Melt