Sell hydraulic door closer hinge

タイトルまたは説明

3 in **-hydraulic door closer hinge, patented product with combination of door hinge, closer and stopper , and performing the above 3 functions after installation. After installation and adjustment, the hinge will close the door automatically, like the door closers, once the door is opened. And it can also hold the door open(make the door stay open) at certain degrees according to the requirement of users. Our default hold-open degree is from *****0degrees, meaning the door will stay open within these degrees. The closing force and speed can be easily adjusted by users themselves. Specifications of doors: Door size: length 1.8m*2.5m X width 0.7, *1.2m X thickness ****0mm Door weight:***5kg; Easy and convenient to install and simple to adjust. Specifications of hinges: Shaft diameter: *3mm; hinge length **0mm X extended width **0 X thickness 3.5mm The materials are made of steel and stainless steel(SUS**4)..