Flat Steel Gate

Flat Steel Gate

Flat steel gate is a common water retaining facility in water conservancy projects. It consists of welded steel gate leaf, support track, rubber water seal and lifting lugs, and moves vertically up and down along the gate slot with the support of hoist.


There are two types of support structures: sliding type and fixed wheel type. The fixed wheel type features lower operating resistance and tighter sealing performance.


It is widely applied in reservoirs, river channels, irrigation districts and pump stations for water retaining, flood discharge, as well as water level and flow regulation. The gate boasts stable structure and convenient disassembly, assembly and maintenance, and can be driven manually, electrically or hydraulically.

Specifications


Compact Structure :The gate leaf is welded by face plate and beam grid with neat and regular components.

Wide Versatility: Suitable for all kinds of hydraulic openings in channels, reservoirs, pump stations, sewage treatment plants and more, with a wide range of size spans available.

Easy Installation ;Standard embedded parts are pre-buried in gate slots; hoisting and alignment procedures are simple to shorten construction periods.

Convenient Inspection & Maintenance :The flat smooth gate surface allows easy flushing of sediment and debris. Sealing and traveling components can be replaced separately.


Excellent Water Sealing Performance :Equipped with P-type rubber water stops that closely fit embedded tracks, with leakage volume fully compliant with industry standards.

Diverse Gate Types: Available in open-top, submerged and vertical-horizontal lifting styles, with single-lifting-point and double-lifting-point layouts for selection.

Wide Compatibility with Drives: Matches screw, winch and hydraulic hoists, easy to realize automatic remote control.

Customizable Anti-Corrosion Performance :Zinc spraying and heavy-duty anti-corrosion coating are optional to resist long-term water corrosion and sediment abrasion.

Labor-Saving Fixed Wheel Operation: Rollers roll along tracks to greatly reduce friction, ideal for large gates requiring frequent opening and closing.


Item

Specification Description

Gate Type

Vertical-lifting flat steel gate, sliding type / fixed wheel type

Opening Size

Width × Height (standard range: 1m×1m ~ 8m×6m)

Design Water Head

0.5m ~ 30m, classified into low, medium and high water head grades

Gate Leaf Material

Q235B carbon structural steel; 304 stainless steel for corrosive working conditions

Main Girder Structure

Solid-web welded I-shaped main girders, evenly arranged for uniform load bearing

Support Type

Fixed wheel support, slide block support, side wheel guiding

Sealing Device

P-type, L-type, Ω-type rubber waterstop strips

Anti-Corrosion Process

Sand blasting rust removal + epoxy zinc-rich primer + intermediate paint + topcoat

Lifting Mode

Electric winch hoist, hydraulic hoist, manual screw hoist

Lifting Speed

0.3 ~ 1.0m/min, variable frequency speed regulation available

Operation Duty Cycle

Intermittent duty, capable of short-time full-load operation

Leakage Standard

Seam leakage ≤ 0.1L/(s·m)

Applicable Environment

Fresh water, brackish water, sewage, channel water environment

Designed Service Life

Main steel structure ≥ 30 years; sealing parts to be replaced every 5~8 years

Matching Accessories

Lifting lugs, gate slot embedded parts, side guide rails, silt cleaning bottom guard


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