三基工業 List of Products and Services

The "waterproof door" is a product installed in buildings as a flood prevention measure. There are waterproof doors used as entrances and exits for people and goods, and waterproof doors used only during flooding. Our company manufactures products based on high design standards and know-how as a floodgate manufacturer, ensuring excellent waterproofing and water-stopping capabilities. 【Features】 ■ Space-saving ■ Easy operation with lever opening and closing ■ Manual operation ■ Made of stainless steel and steel *For more details, please refer to the PDF materials or feel free to contact us.

• Watergate

There are options made of cast iron and stainless steel. 【Features】 ○ The door body, door stop, and hoist are assembled as a single unit, allowing for easy installation by civil engineers as is. ○ There is no need for civil engineering structures such as slabs or special piers to install the hoist. ○ The structure is designed to fit the outer diameter of the flume pipe and can be secured with fixed bolts. ○ Although it is a standard gate based on flume pipe specifications, it can also be installed directly in irrigation channels. ○ It is a standard product based on an easy order system according to the specified gate diameter and frame length, resulting in short delivery times and low costs. ○ It can be installed along the slope on trapezoidal cross-section waterway walls. ● For other functions and details, please contact us.

• Hoist/Crane
• Airport facilities
• Steel construction

This is a gate installed at the entrances and exits to the interior of coastal levees and riverbank embankments. 【Features】 ○ The door body is equipped with wheels and opens and closes horizontally. ○ The door can be opened and closed manually, with a hand crank, or by engine power. ● For other functions and details, please contact us.

• Airport facilities
• River construction
• Steel construction

Used for backflow prevention gates in drainage pipes and coastal flood prevention gates, the gate opens and closes based on the water level difference upstream and downstream. The opening and closing mechanism is referred to as a mitre gate for double-opening and a swing gate for single-opening, utilizing a rotating shaft attached to the side of the door. 【Features】 ○ The upper and lower shafts are made of stainless steel rods, with oil-less metal bearings installed. ○ The door stop hardware is made of stainless steel shapes or stainless steel plates. ○ The upper and lower bearing hardware is designed to be adjustable even after installation. ○ The material of the door can be designed and manufactured in various types, including general steel, stainless steel, FRP, aluminum alloy, and wood. ● For other functions and details, please contact us.

• Steel
• Airport facilities

It is an arch-shaped gate with a skin plate protruding on the water pressure side and a tensile member formed on the rear surface. Since the main girder is used as the main supporting member, it can significantly reduce weight compared to conventional sluice gates (simple beams with horizontal girders). 【Features】 ○ Cost reduction due to the reduction in the weight of the gate body. ○ By reducing the lifting load, a device one rank lower can be used for the opening and closing mechanism. Additionally, maintenance costs (such as electricity fees) can be saved. ○ The arch shape allows for thinner ends of the gate body, reducing the impact weight, and also minimizes the excavation required for civil engineering work, allowing for smaller support structures. ● For other functions and details, please contact us.

• Watergate
• Airport facilities
• Metalwork

It is most suitable for small gates, featuring a structure where stainless steel plates are installed on the support parts of the door body and the stop, allowing it to slide. The opening and closing device uses a spindle type or a rack type hoist. The opening and closing mechanism can be designed and manufactured in electric, engine, or manual types. 【Features】 ○ Stainless steel plates are used on the sliding surfaces between the door body and the stop, as well as on the watertight rubber contact surfaces. ○ The watertight method ensures complete water sealing through watertight rubber. ○ In the case of four-sided watertightness, a wedge is installed to press the door body against the stop, ensuring complete watertightness even under low water pressure. ○ Side rollers or side shoes are installed on the sides of the door body to prevent lateral sway. ● For other functions and details, please contact us.

• Hoist/Crane
• Airport facilities
• Steel construction

This is a roller gate that supports the water pressure load on the gate body with rollers, reducing resistance during opening and closing. 【Features】 ○ The opening and closing of the gate body is done by lifting it from both ends with wire ropes and winding it with a winch. ○ A manual operation device is installed to allow for manual control of the opening and closing mechanism. ○ The brake system is equipped with an electromagnetic brake directly connected to the motor and a hydraulic lift-type mu-lift brake. ○ A high-torque motor designed for sluice gates is used, along with a silo-type reduction gear. ○ The structure of the gate body is designed to be safe against water pressure loads, and the upper or lower structure of the gate body is carefully considered to prevent vibrations caused by water flow. ○ A design that uses valve control is also available to simplify the structure of the motor and reduction gear of the opening and closing mechanism.

• Watergate
• Airport facilities
• Steel construction

A torque shaft is provided at the lower part of the door body, with torque arms and hydraulic cylinders arranged at both ends or one end, creating a structure that can stand upright or tilt. 【Features】 ○ Since the hydraulic cylinder is housed in a pit on the side, it is protected from damage to the cylinder rod caused by soil, rocks, etc. ○ The height difference upstream and downstream only needs to be the thickness of the door body, allowing for a smaller design. ○ The lower main beam uses steel pipes, ensuring a robust structure that prevents twisting when the door body stands upright or tilts. ○ The multi-stage tilting mechanism ensures complete water storage functionality while safely preventing rapid increases in water levels downstream during discharge. ● For other functions and details, please contact us.

• Airport facilities
• Steel construction
• stone

It is a reservoir water intake device. 【Features】 ○ Slide gate ○ Inclined flume structure ○ Rigid flume structure ● For other functions and details, please contact us.

• Steel construction
• Roof and gutter construction

The door body is equipped with a hydraulic cylinder mounted on the vertical main beam, and the ends of the cylinder rods are each connected to the riverbed with hinge joints in a truss structure. 【Features】 ○ The hydraulic cylinder and hydraulic piping are installed within the door body area using fixed materials. ○ In the event of flooding or increased upstream water levels, the automatic tipping device allows for multi-stage tilting, preventing rapid increases in downstream water levels and ensuring safety. ○ If there is a slight increase in water levels during the intake period, the structure will tilt by the amount of the increase, maintaining the upstream water level almost constant without extreme reductions. ○ The door body, cylinder mounting frame, and side door stops are connected at the front, allowing for assembly and opening/closing tests at the factory, ensuring that a complete product is shipped. ● For other functions and details, please contact us.

• Hoist/Crane
• Airport facilities
• Steel construction