Category:Hardware & Tools/Castings/Iron Castings

Product Description:Cast iron flap gate is a type of check valve that automatically controls opening and closing using the pressure difference inside and outside the pipeline. It is primarily used to prevent backflow of external water and is widely applied in fields such as water conservancy and municipal sewage. Structural CompositionIt consists of four parts: valve seat, valve plate, sealing ring, and hinge. Made of cast iron, it features a tight and reliable structure. The valve plate closes with the assistance of its own weight or buoyancy, while the sealing ring ensures leak-proof performance. Working PrincipleIt automatically opens for discharge when the internal water pressure of the pipeline exceeds the external pressure, and closes automatically when the external water level is higher than the internal level. This check valve characteristic effectively prevents tidal water from rivers from flowing back into drainage pipelines. Applicable ScenariosSuitable for media such as water, sewage, and seawater. Installation methods include flange connection or concrete embedding, supporting both circular and square outlets. Performance AdvantagesEnergy Efficiency: No manual operation required; it opens and closes automatically based on water pressure, reducing energy consumption. Durability: Cast iron material ensures a long service life with simple maintenance. Convenience: Simple structure, no external force needed for switching, making it suitable for applications in water conservancy, municipal sewage, urban flood control, and drainage. more>

Category:Hardware & Tools/Castings/Iron Castings

Product Description:Ductile iron gates are water flow control devices made from ductile iron, featuring high strength, high wear resistance, and excellent sealing performance. They are widely used in hydraulic engineering, water supply and drainage systems, and other fields.Material and StructureManufactured from HT250 or ductile iron, complying with CJ/T3006-92 and DL/T5018-2004 standards. Key components have reserved corrosion allowances and undergo stress relief through aging treatment. The structure includes gate frames, gate leaves, lifting seats, etc., categorized by shape into flat (PZ) and arched (PGZ) types. The PGZ type employs a 60-degree central angle design to reduce water pressure load.Sealing and Water StoppageThe sealing structure uses inclined iron or copper alloy facings, combined with wedge devices to achieve bidirectional water stoppage. Water leakage can be controlled within 0.03-0.07 liters per minute per meter. The gate leaf periphery is equipped with cast iron borders and transverse stiffeners to enhance rigidity, ensuring smooth operation.Installation and MaintenanceRequires overall hoisting into the slot and adjustment of the sealing surface gap to within 0.1 mm through secondary concrete pouring. Regular lubrication and anti-corrosion maintenance are necessary. Suitable for small and medium-sized hydraulic engineering, can be manufactured in segments and assembled on-site. more>

Category:Hardware & Tools/Castings/Iron Castings

Product Description:The bidirectional water-stop cast iron copper-inlaid gate is a key equipment used in water supply and drainage, flood control, sewage treatment, and other engineering projects. It features bidirectional pressure-bearing and bidirectional water-stop functions, preventing media backflow. Its core structure includes a gate frame, gate plate, sealing strip, guide rail, and adjustment mechanism, made of cast iron to ensure strength and corrosion resistance. Structural FeaturesMaterial: The main body uses gray cast iron or ductile iron, with copper or rubber inlaid on the sealing surface. The outer arc design enhances uniform stress distribution. Sealing Performance: The sealing gap is adjusted to ≤0.1mm via a wedge device, with forward leakage ≤0.7L/m·min and reverse leakage ≤1.25L/m·min. Installation: Supports embedded steel plate or bolt fixation, compatible with manual/electric/hydraulic hoists. Performance ParametersPressure-Bearing Capacity: Maximum forward/reverse head of 10 meters, nominal pressure ≤0.1MPa. Operating Temperature: -20℃ to 120℃, suitable for various media such as sewage and seawater. Opening/Closing Speed: 0.2-1.5 meters per minute, supports remote control. Application ScenariosPrimarily used in municipal water supply and drainage, river cutoff, sewage treatment, industrial water treatment, and other scenarios requiring bidirectional water-stop to avoid sewage backflow risks. more>

Category:Hardware & Tools/Castings/Iron Castings

Product Description:The copper-inlaid cast iron square gate is a hydraulic engineering device that combines a cast iron main body with copper sealing elements, primarily used for flow interception, water level regulation, and medium control. It features high strength and corrosion resistance. Structural CompositionIt consists of a gate frame, gate leaf, guide rails, sealing strips, transmission screw rod, and wedge adjustment mechanism. The gate frame and leaf are made of gray cast iron or ductile iron, with guide rails fixed by stainless steel bolts. The sealing surface is inlaid with copper alloy or rubber strips, achieving planar contact sealing through precision machining. Core Functions?Bidirectional Pressure Resistance?: Forward pressure resistance of 10 meters water head, reverse pressure resistance of 10 meters water head;?Sealing Performance?: Sealing gap ≤0.1mm, forward leakage ≤0.7L/m·min, reverse leakage ≤1.25L/m·min;?Corrosion Resistance?: Suitable for environments from -20°C to 120°C, applicable to media such as sewage and seawater;?Installation Method?: Supports embedded steel plate or bolt fixation, compatible with manual, electric, or hydraulic hoists. Application ScenariosWidely used in municipal water supply and drainage, flood control and drought relief, hydraulic hubs, industrial pipelines, and wastewater treatment, particularly suitable for concealed installation scenarios (such as scenic areas and road infrastructure). more>

Category:Hardware & Tools/Castings/Iron Castings

Product Description:Cast iron spiral gates are devices used to control the flow of solid particles or powdered materials, primarily composed of a frame, gate plate, screw rod, and other components. The opening and closing action is achieved by manually rotating the screw rod to drive the horizontal movement of the gate plate. ?Structural Features??Frame and Material?: Made of carbon steel with anti-corrosion surface coating, capable of withstanding impacts from non-viscous solid materials. ?Opening and Closing Mechanism?: The gate plate is driven horizontally by rotating the screw rod, featuring a simple structure and flexible operation. ?Sealing Design?: Some models are equipped with a bidirectional sealing structure, effectively cutting off material flow. ?Application Scenarios?Mainly used in industries such as building materials, metallurgy, mining, power, chemical, and glass manufacturing. Suitable for flow regulation at the top or bottom of storage bins and in conveying pipelines, allowing real-time adjustment of opening degree and adaptation to various installation angles. more>

Category:Hardware & Tools/Fasteners & Connectors/Other Fasteners & Connectors

Product Description:The side-crank screw hoist is a manually operated flat gate hoisting device, driven by human-powered cranking. It features anti-theft water functionality and a self-locking mechanism, making it suitable for small to medium-sized hydraulic engineering projects.Structural FeaturesComposed of a housing, support frame, screw rod, hand crank, and other components, it achieves gate opening and closing through manual cranking. Its core component is the threaded rod structure, which converts rotational motion into linear motion to drive the gate's lifting and lowering.Applicable ScenariosPrimarily used in areas without power supply, such as water conservancy and hydropower, municipal construction, and agricultural water conservancy. It meets gate control requirements in special environments like plains and mountainous regions.Installation RequirementsDuring installation, the foundation plane must be level at 180°, with the screw axis perpendicular to the horizontal plane of the gate platform beam. The deviation of the longitudinal and transverse centerlines should not exceed ±3mm.Performance ParametersCapacity Range: 0.3T–100T (varies significantly by model)Operation Method: Manual side-crank type (human-powered operation)Anti-Theft Design: Equipped with an anti-theft nozzle and specialized tools to prevent water leakage more>

Category:Hardware & Tools/Castings/Iron Castings

Product Description:Flat cast iron gates are planar structural water flow control devices primarily made of cast iron, widely used in hydraulic engineering and municipal facilities. Structural CompositionMainly composed of gate frame, gate leaf, lifting seat, and sealing inclined iron. The gate frame serves as the supporting structure and sliding track for the gate leaf, fixed in the secondary concrete of the gate pier and base slab via anchor bolts, evenly transferring water pressure to the main structure. The gate leaf is the water-retaining component directly bearing water pressure, driven by hoisting machinery to adjust water levels through lifting and lowering. Function and ApplicationPrimarily used for flow control, water level regulation, and water retention, commonly seen in hydraulic projects such as rivers, reservoirs, and hydropower stations, as well as in municipal water supply and drainage, and agricultural irrigation. Its planar structure minimizes flow resistance, making it suitable for small to medium-sized hydraulic projects. Material and SealingManufactured from gray cast iron or ductile cast iron, the sealing structure employs inclined iron or copper alloy facings. A wedge block mechanism, combined with water pressure, enables bidirectional sealing, with leakage controlled within the range of 0.03–0.07 L/m·s. Installation and MaintenanceInstallation requires overall hoisting into the slot followed by secondary concrete pouring, adjusting sealing surface gaps to within 0.1 mm. Regular lubrication and anti-corrosion treatment are necessary to ensure smooth operation and extend service life. more>

Category:Hardware & Tools/Castings/Iron Castings

Product Description:Flanged cast iron gate valves are a type of cast iron gate valve that uses flanged connections, primarily used for blocking or connecting pipeline media. They feature a compact structure, reliable sealing, and are suitable for controlling media such as water, steam, and oil. Structural FeaturesMaterial: The valve body is made of gray cast iron or ductile cast iron, with some models using cast steel to enhance pressure-bearing capacity. Sealing Design: The sealing surface employs stainless steel and hard alloy materials, combined with flexible graphite packing to ensure sealing performance. The gate is surrounded by a cast iron frame and transverse ribs to improve rigidity and wear resistance. Drive Methods: Supports manual, electric, pneumatic, and other drive methods for flexible operation. Application ScenariosSuitable for blocking control of industrial pipeline media in petroleum, chemical, and thermal power plants. Used in water conservancy, flood control, water supply, and drainage projects for water level regulation and flow control. Technical ParametersWorking Pressure: Up to 1.0 MPaWorking Temperature: Generally ≤200°C, with some models capable of withstanding higher temperatures (e.g., cast steel models can withstand up to 600°C). Applicable Media: Water, steam, oil, and some corrosive media (such as coal gas). This valve complies with national standards such as GB/T12234, with a nominal diameter range of DN50 to DN700, suitable for various pipeline specifications. more>

Category:Hardware & Tools/Pipe Fittings/Tee Fittings

Product Description:A hydraulic steel dam is a hydraulic engineering facility that uses a hydraulic drive system to control the rotation or lifting of steel gates, combining both water retention and flood discharge functions. Its core structure includes a steel gate body, a hydraulic drive system, and embedded components, with lifting or rotating actions achieved through direct hydraulic cylinder actuation. Structure and Working PrincipleThe hydraulic steel dam consists of a steel plate welded gate body, a hydraulic drive system (including oil cylinders and pump stations), and embedded fixtures. The gate body is continuously arranged along the dam axis without intermediate support piers. The hydraulic system drives the gate body to rotate or lift by controlling the extension and retraction of the oil cylinders, enabling precise water level regulation. more>

Category:Hardware & Tools/Castings/Iron Castings

Product Description:Ductile iron gates are flow control devices primarily made from ductile iron, widely used in water conservancy projects, urban water supply and drainage, and industrial water treatment. They regulate water levels and intercept flow through the lifting and lowering of the gate plate driven by a hoist. Material and StructureManufactured from ductile iron, the material offers high strength and strong corrosion resistance, suitable for environments ranging from -20°C to 120°C and sewage media. The gate body consists of components such as the frame, gate plate, guide rails, and sealing strips. The sealing surface is made of copper alloy or rubber, achieving bidirectional water stoppage through a wedge mechanism with a gap ≤0.1 mm. Function and ApplicationPrimarily used for intercepting flow and regulating water levels in projects like reservoirs, rivers, and hydropower stations, they also serve functions such as diversion, confluence, and flow direction switching. In municipal engineering, they are used for water supply and drainage control, while in industrial settings, they are applied in sewage treatment, flood prevention, and other scenarios. Installation and MaintenanceRequires overall hoisting into the slot and adjustment of the sealing surface gap with secondary concrete pouring. Regular lubrication and anti-corrosion treatment are necessary for daily maintenance. Operation methods include manual, electric, or pneumatic, adaptable to various working condition requirements. more>

Category:Hardware & Tools/Castings/Iron Castings

Product Description:A bidirectional water-stop cast iron sluice gate is a flow control device that achieves bidirectional sealing through a bidirectional water-stop structure, primarily used in reservoirs, rivers, and hydraulic engineering projects. It features bidirectional sealing and bidirectional opening/closing functions. Structural FeaturesMade of cast iron materials (such as HT200 gray cast iron or ductile iron), the main structure includes the gate frame, gate leaf, lifting seat, and sealing components. The gate frame serves as a sliding support structure and is fixed via secondary concrete pouring. The gate leaf adopts a flat or arched design (e.g., PGZ type), with cast iron borders and transverse rib plates around the edges to enhance rigidity. The sealing system uses inclined iron or copper alloy facings, combined with wedge devices to achieve bidirectional water-stop, with leakage controlled within 0.03-0.07 L/m·s. Functions and ApplicationsSuitable for water release control at reservoir bottom outlets, bidirectional river cutoff, and bidirectional flow regulation in special geographical environments. It supports both manual and electric operation modes. Its bidirectional water-stop design meets the dual needs of irrigation and flood discharge. During installation, a slope of within 30° must be maintained, and secondary pouring ensures tight sealing surface contact. Technical ParametersDrive Method: Supports manual screw or electric operationSealing Performance: Forward leakage ≤0.7 L/min·m, reverse head up to 10 metersMaterial and Corrosion Resistance: Cast iron base with stainless steel or copper alloy sealing surfaces, resistant to acid and alkali corrosion, operating temperature range -20°C to 120°CInstallation Requirements: Requires overall hoisting into the slot with預(yù)留 corrosion allowance, regular lubrication, and anti-corrosion maintenance more>

Category:Hardware & Tools/Castings/Iron Castings

Product Description:High-pressure cast iron gates are critical equipment used in hydraulic engineering, primarily for controlling water flow, opening and closing operations, and regulating water levels. Their core features are as follows:Structural Characteristics?Material?: Manufactured from HT250 gray cast iron or ductile iron, complying with industry standards CJ/T3006-92 and DL/T5018-2004. Critical sections include corrosion allowances and undergo stress relief through aging treatment. ?Structure?: Composed of gate frame, gate leaf, lifting seat, and tight-closing inclined iron components. The gate leaf directly withstands water pressure, while the gate frame serves as a support structure and ensures proper alignment of sliding tracks. ?Function and Application?Sealing Design?: Utilizes inclined iron or copper alloy facings, combined with wedge mechanisms and water pressure to achieve bidirectional sealing, with leakage controlled within 0.03-0.07L/m·s. ?Applicable Scenarios?: Widely used in reservoirs, rivers, hydropower stations, and other hydraulic engineering projects, supporting water level regulation, flow interception, and directional water flow control. ?Installation and Maintenance?Installation Requirements?: Requires hoisting as a whole into the slot, followed by secondary concrete pouring to adjust sealing surface gaps to within 0.1mm. Regular lubrication and anti-corrosion maintenance are essential. more>

Category:Hardware & Tools/Seals & Gaskets/Other Seals

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Category:Hardware & Tools/Castings/Iron Castings

Product Description:PZ Plane Cast Iron Gate is a water flow control device primarily made of cast iron, widely used in water conservancy projects such as reservoirs, rivers, and hydropower stations. It regulates water levels and intercepts flow by driving the gate plate up and down via a hoist. Structural CompositionIt consists of components such as the gate frame, gate plate, lifting seat, and tight sealing inclined iron. The gate frame serves as a support and sliding track, fixed in the secondary concrete of the gate pier and base slab with anchor bolts, evenly transferring water pressure to the gate chamber structure. The gate plate is the water-retaining component directly bearing water pressure, with cast iron borders around its periphery and transverse stiffeners to enhance rigidity. Types and SpecificationsCategorized by shape into flat (PZ) and arch (PGZ) types. The PZ type is suitable for small to medium-sized projects, while the PGZ type, with its 60-degree central angle design, reduces water pressure load. Common specifications range from width × height: 300×300 to 800×800 mm, with nominal diameters covering DN200×200 to DN3000×3000. Sealing and Water StoppageUtilizes inclined iron or copper alloy facing structures, achieving bidirectional water stoppage through wedge devices and water pressure. Water leakage can be controlled within 0.03-0.07 liters/meter·second. The sealing surface gap is adjusted to within 0.1 mm to ensure tight contact between the gate plate and the sliding track. Materials and StandardsThe main materials are mostly HT250 gray cast iron or ductile cast iron. Manufacturing complies with CJ/T3006-92 and DL/T5018-2004 standards, with corrosion allowances reserved for key parts and stress relieved through aging treatment. more>

Category:Hardware & Tools/Seals & Gaskets/Other Seals

Product Description:ColorBlackOperating Temperature ℃-10~318Hardness (Shore A)75Tensile Strength (MPa)21.2Elongation (%)225Modulus (100% Modulus)5.7Compression Set % (200℃ /70h)15Characteristics"Wide chemical resistance High temperature resistance Low compression set"ApplicationsHigh-temperature furnaces, various valves, pumps, components with high corrosion resistance requirements, etc. more>

Category:Hardware & Tools/Seals & Gaskets/Other Seals

Product Description:ColorWhiteOperating Temperature ℃-10~200Hardness (ShoreA)80Tensile Strength (Mpa)15Elongation (%)155Modulus (100% Modulus)Compression Set % (200℃ /70h)22Characteristics"Excellent chemical resistance, no metal ion release, no indentation"ApplicationsWet process, partial dry process, MOCVD, etc. more>