Patent Dense Press-Locked Steel Grating Trench Covers
Compared with traditional gratings trench covers, the open and closed hinged checkered plate drainage covers are made of flat bars instead of cross twisted bar, shorten the bearing bar space, but enhance the stress areas, and also women walk normally even though they wear stilettoses.Meanwhile, it is convenient for Maintenance and dredging. And related products has been made in the design patent. This style of gutter covers are widely used at Austrial market.
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