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Lead time: 20-40working days Payment: T/T L/C Min.order: 100 set/sets Item NO.: YRMC-smart Loading Class: customized Size: customized Material: SMC Specification: √ With tongue-like spring lock, self-weight automatic lock can be used when the manhole cover is closed, no need for separate locking after the cover is closed √ A spring is set on the cover to play a buffer role when the cover is closed. After opening the lock of the cover, it can spring up easily. When applying external force, it only needs to lift it slightly at a small Angle to open the cover automatically √ The surface of the manhole cover is provided with an inner hexagon opening hole. After opening, direct pressing can open the spring lock √ A handle is arranged on the surface of the cover to facilitate lifting the cover after the lock is opened √ The manhole cover has a sealing gasket for waterproofing，or customize fire and explosion - proof manhole cover More Details: Brand: YouRuo Place of origin: HangZhou city, ZhengJiang Province, CN Material: SMC Colour: Generally black; optional Certificate: IS09001: 2015 Service life: 50 years Lock style: screw Working temperature: -40℃ to 100℃ Customized/OEM: Accepted FOB port : NingBo Port Packing: Standard export wooden pallets Supply ability: 200,000sets per year Application: Construction, Public The Advantage Of Composite Cover: ♦ Anti-theft valve because of Non-recyclable materials ♦ ECO-friendly ♦ Non-conductive to electricity ♦ No metal fatigue ♦ 30-60% lighter than the equivalent cast iron model ♦ Resistant to corrosion, decay ,acidic waters and static ♦ Long life ♦ Usable in any kind of environment, climate and temperatures ♦ Lightweight but resistant to high pressure covers ♦ easy maintenance ♦ Variety of colors and designs as for city beautification ♦ Prevent from producing sound when the vehicle passes through the coversSmart Manhole Covers manufacturers website:http://www.smcmonholecover.com/smart-manhole-covers/