304 stainless steel invisible manhole cover square 201 stainless steel sunken brick manhole cover round sewer grate

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Color classification:: 201 Inner and outer frame plus galvanized base plate 400 *400 *80 *3 201 inner and outer frame plus galvanized base plate 500 *500 *80 *3 201 inner and outer frame plus galvanized base plate 600 *600 *80 *3 201 inner and outer frame plus galvanized bottom plate 700 *700 *800 *3 201 inner and outer frame plus galvanized bottom plate 800 * 800 * 80 * 3 304 inner and outer frame plus galvanized base plate 300 * 300 * 70 * 3 304 inner and outer frame plus galvanized bottom plate 400 * 400 * 80 * 3 304 Inner and outer frame plus galvanized base plate 500 *500 *80 *3 304 Inner and outer frame plus galvanized base plate 600 *600 *80 *3 304 Inner and outer frame plus galvanized base plate 700 *700 *80 *3 304 Inner and outer frame plus galvanized bottom plate 800 *800 *80 *3 201 inner and outer frame plus galvanized bottom plate 300 *300 *70 *3 201 inner and outer frame plus galvanized bottom plate 900 *900 *80 *3 201 inner and outer frame plus galvanized bottom plate 1000 *1000 *80 *3 304 Inner and outer frame plus galvanized base plate 900 * 900 * 80 * 3 304 inner and outer frame plus galvanized bottom plate 1000 * 1000 * 80 * 3 support customization Large amount of contact customer service to enjoy the factory price