Overview
Waterproof grating is a specialized open-grid flooring system engineered to perform in wet, corrosive, or hygienic environments where standard gratings would fail. Unlike conventional gratings, these feature sealed surfaces or non-porous materials to prevent liquid retention and microbial growth. The product originated from marine and chemical processing industries but now sees widespread use across food production, pharmaceuticals, and water treatment facilities. Modern waterproof gratings incorporate advanced manufacturing techniques like pultrusion for FRP types or hot-dip galvanizing for metal variants. They meet international standards such as ISO 9001 and OSHA safety requirements for slip resistance (typically R10-R13 rating). Their design balances structural integrity with maximum open area (usually 60-70%) for efficient drainage.
Structure and Working Principle
The grating consists of load-bearing bars (bearing bars) perpendicularly intersected with cross bars, forming a rigid lattice. Waterproof variants differ by either using solid surface coatings (like epoxy on steel) or inherently non-absorbent materials like FRP. Some designs feature molded anti-slip patterns or gritted surfaces. Drainage occurs through the grating's apertures while the surface remains walkable. In FRP types, the resin matrix encapsulates glass fibers, creating a monolithic structure resistant to fluid penetration. Metal gratings achieve waterproofing through continuous welds at joints combined with protective coatings. The spacing between bars (typically 30-50mm) is optimized to prevent small object fall-through while allowing rapid liquid flow.
Key Features
Corrosion resistance is paramount, with stainless steel (316 grade) resisting saltwater and FRP enduring pH levels from 2-12. Load capacities range from 1-5 tons/sq m depending on material and bar thickness. All variants feature UV stabilization for outdoor use. Hygienic models have radiused corners and seamless surfaces to meet FDA/EU food contact regulations. Thermal properties vary significantly—FRP maintains functionality from -40°C to 120°C, while metal gratings can withstand higher temperatures but may require thermal expansion joints. Notably, FRP gratings are electrically non-conductive, making them ideal for utility substations or explosive environments.
Application Areas
Primary applications include wastewater treatment plants (walkways over settling tanks), offshore oil rigs (helideck peripheries), and food processing facilities (around washdown areas). In chemical plants, they're used for secondary containment flooring where acid spills may occur. Emerging uses include aquaculture (cage walkways resisting seawater corrosion) and solar farms (support structures in wet terrain). Municipalities deploy them for bridge sidewalks in snowy regions where de-icing salts accelerate corrosion. The pharmaceutical industry favors FRP gratings for cleanrooms due to their non-shedding properties and compatibility with sterilization protocols.
Maintenance and Precautions
Routine maintenance involves pressure washing to remove debris blocking drainage (quarterly for food plants, annually for general industry). Metal gratings need coating inspections—touch up chips promptly to prevent substrate corrosion. FRP requires checking for UV degradation or fiber bloom. Critical precautions include avoiding alkaline cleaners on FRP (can dissolve resin matrix) and preventing galvanic corrosion when dissimilar metals contact (use insulating pads). In freezer applications, specify gratings with non-skid surfaces rated for subzero temperatures. Always verify load ratings before installing heavy equipment, and consult engineers for seismic zone installations.
B2B Procurement Guide
Procurement should begin with a site assessment documenting chemical exposures, load requirements, and foot traffic volume. For FDA-regulated facilities, request Material Safety Data Sheets (MSDS) proving food-grade compliance. Batch traceability is crucial for quality assurance. Leading manufacturers include Nucor Grating (US), Webforge (Australia), and Fibergrate (global FRP specialist). MOQs typically start at 50 sq m, with lead times of 2-6 weeks for custom sizes. Consider total cost of ownership—while FRP has higher upfront costs than steel, its 30+ year lifespan in corrosive environments often proves economical. Request samples for slip testing and verify third-party certifications like ISO 1461 for galvanizing.
Related Manufacturers
- 主营：钢格板、踏步板、洗车房、钢格栅、格栅板、地沟网格、海上平台、焊接工艺、船用平台、道路排水、楼梯踏步、防滑通风、网格盖板、检修通道、水沟盖板、电站平台、篦子盖板、喷漆工艺、不锈钢盖板、市政排水沟、集装箱登车桥、楼梯走道踏步、双层防腐结构、工程施工用地铺、下水道盖板篦子
- 主营：走线槽、电缆管、树篦子、地格栅、玻璃钢格栅、防滑排水格栅、地沟盖板、电缆桥架、布线槽盒、化工管道、排污管道、通风管道、支架槽盒、玻璃钢管道、排污水管道、防火阻燃槽盒、电缆保护槽盒、市政排水管道、排污排水管道、污水池网格板、电力电缆保护管、电线槽防火槽盒、除臭污水纤维管、玻璃钢电缆槽盒
- 主营：玻璃钢水罐、玻璃钢脱硫塔、净化除尘设备、玻璃钢格栅、玻璃钢化粪池
- 主营：钢格栅、热镀锌钢格栅、钢格栅板、踏步板、平台钢格板、走廊脚踏板
- 主营：钢格板、楼梯踏步板、沟盖板、插接格栅板、不锈钢格板、特殊钢格板、热镀锌钢格板、冷热镀锌钢格板、隐形井盖
- 主营：铝合金波浪板、铝合金长城板、铝地板、铝隔热瓦、金属波浪板、凹凸长城板、隔热铝瓦、铝方通、铝方管、外墙铝板、装饰铝板、隔热装饰板、屋顶隔热瓦、阳光房隔热铝瓦、铝合金隔热瓦、金属装饰板、门头招牌装饰板、装饰铝方管、隔热大板
- 主营：玻璃钢管道、玻璃钢储罐、玻璃钢脱硫塔、玻璃钢格栅、玻璃钢平盖板、玻璃钢拱形盖板、玻璃钢拉挤方管、光伏走道板、锌铝镁走道板、玻璃钢风管、玻璃钢法兰、玻璃钢弯头、玻璃钢三通变径、玻璃钢异形件、玻璃钢洗涤塔、玻璃钢围栏、玻璃钢电缆桥架、玻璃钢污水池盖板、玻璃钢拉挤圆管、玻璃钢平板、玻璃钢拉挤平板、玻璃钢除臭风管、玻璃钢檩条
- 主营：钢塑土工格栅、复合土工格栅、玻纤土工格栅
- 主营：沟盖板、不锈钢排水沟盖板、水沟盖板、不锈钢格栅盖板、钢格栅、线型排水沟、不锈钢井盖、不锈钢装饰井盖、隐形不锈钢井盖、不锈钢篦子、铸铁井盖、树脂井盖
- 主营：钢格板、踏步板、地沟盖板、格栅板、格栅盖板、镀锌钢格栅、网格盖板、水沟盖板、平台踏步、钢结构平台、雨水篦子沟盖板、楼梯平台脚踏板
- 主营：排水管、下水道管道、双壁波纹管材、九孔格栅管107、聚乙烯给水管、金属钢波纹管、玻璃钢化粪池、高压电缆保护管
- 主营：p10全彩、信息led、监控led、户外防水格栅屏、led互动、椭圆led、柱子led、软屏led、商场led、感应led、圆环led、方柱led、全彩led、led交通、led阶梯、led透明、中心led、电子led、非标led、栈道led、食堂led、车载屏、背景led、书店led、灯杆led、led屏幕
- 主营：风机盘、纯铜电机、水冷暖盘管机
- 主营：排烟口、散流器、风机箱、格栅百叶风口、风幕机、屋顶风机、斜流风机、混流风机、边墙风机、球形风口、空调机组、离心风机、排烟风机、轴流风机、防雨百叶、新风换气机、排烟防火阀、空气过滤器、消声静压箱、离心通风机、手动调节阀、空气能热泵、加压送风机、卡式风机盘管、地源热泵机组、自垂百叶风口
- 主营：查询机、灯条屏、广告机、格栅屏、高亮防水、户外屏、报站器、橱窗屏、电视机、gps自动、车载gps、19寸车载、led透明屏、玻璃幕墙、led贴膜屏、楼宇电梯、传媒电梯、护栏广告、控制系统、光电玻璃、环境定制、led显示屏、贴膜屏玻璃、透明贴膜屏、车载广告报站
- 主营：外墙板、广告牌、洁净板、防水格栅吊顶方木、护墙板、墙裙板、玻镁板、硅酸钙、冰火板、吸音板、生态木、背景墙、a级防火、95长城板、方通吊顶、方木防火、栈道长条、吊顶材料、装饰材料、外墙挂板、木纹方通、木塑方通、墙面木塑、庭院别墅、墙面环保、吊顶装饰
- 主营：冷却塔、走廊板、除臭箱、格栅可、地格栅、格栅板、网格栅、拉挤格栅、警示桩、漏粪网、防腐蚀、雨篦子、洗车房、护树板、鸽子棚、寿命长、标志桩、沟盖板、标示桩、玻璃钢、标识桩、雨水篦、水篦子、微生物、光伏发电
- 主营：碳晶板、护墙板、背景墙装饰板、防霉集成墙板、竹木纤维墙板、木饰面防撞板、防撞板、防撞碳晶板、集成墙板、木饰面集成墙板、木饰面碳晶板、木饰面护墙板、防潮碳晶板、防火碳晶板、防撞护墙板、冰火板、uv板、地板、石晶地板、spc石晶地板、方通、墙面防撞板、墙面护墙板、木饰面板
- 主营：楼梯脚踏板、地沟排水沟盖板、不锈钢网格板、格栅板、钢格栅板、镀锌钢格栅板、冲孔网、洞洞板、穿孔网、圆孔网、不锈钢冲孔网、铝板穿孔板、防滑板、穿孔板、球形立柱、球形栏杆、镀锌球形立柱、镀锌球接栏杆、热浸锌球接立柱、热浸锌球型立柱、热浸锌三球接护栏、球型立柱、球型栏杆、球接立柱、球接栏杆