Overview
Rectangular steel grating, also known as bar grating, is a structured metal product formed by welding or pressure-locking perpendicular cross bars to bearing flat bars. It is widely used in industrial and architectural applications due to its durability, versatility, and cost-effectiveness. The open grid design allows for ventilation, drainage, and light transmission while providing a secure walking or working surface. Common materials include carbon steel (often hot-dip galvanized for corrosion resistance), stainless steel (for harsh environments), and aluminum (lightweight applications). Standard sizes and load capacities are defined by international standards like ISO 14122 and ANSI/NAAMM MBG 531.
Structure and Working Principle
The grating consists of parallel flat bars (bearing bars) spaced at regular intervals, connected by cross bars (twist bars or round bars) welded or locked at intersections. The spacing between bearing bars determines load capacity; narrower spacing supports heavier loads. Welded gratings offer higher strength, while locked gratings are lighter and easier to cut on-site. Under load, forces are distributed across the bearing bars, which transfer stress to support structures. The open area ratio (typically 50–70%) reduces weight and wind resistance compared to solid plates. Anti-slip serrations can be added to flat bars for enhanced safety.
Key Features
Rectangular steel grating is favored for its high strength-to-weight ratio, with load capacities ranging from 1 to 5+ tons per m². Galvanized versions resist rust in outdoor or humid environments, while stainless steel variants suit chemical plants or marine settings. The modular design allows easy installation and retrofitting. Additional features include customizable mesh sizes, ADA-compliant surfaces for public walkways, and fire-resistant coatings. Compared to alternatives like expanded metal or fiberglass grating, steel grating provides superior rigidity and longevity for heavy-duty applications.
Application Areas
Industrial: Used in oil refineries, power plants, and factories as catwalks, stair treads, or machinery platforms. Infrastructure: Bridges, drainage covers, and subway ventilation grates. Commercial: Shopping mall balconies, outdoor staircases, and rooftop walkways. Architectural: Decorative facades or sunshades where aesthetics matter. Specialized variants include heavy-duty grating for truck weigh stations, explosion-proof designs for hazardous areas, and lightweight grating for temporary structures. Proper selection depends on load requirements, environmental exposure, and compliance with local safety codes.
Maintenance and Precautions
Routine maintenance involves inspecting for corrosion, loose connections, or debris accumulation. Galvanized grating may require re-coating after 20+ years; stainless steel needs occasional cleaning to remove salt or chemical deposits. Avoid grinding or welding without protective measures to preserve corrosion resistance. Safety precautions include securing grating edges with clamps or bolts to prevent displacement, using non-slip surfaces in wet areas, and ensuring adequate support spacing to prevent deflection. For electrical environments, specify bonded or non-conductive grating to prevent static hazards.
B2B Procurement Guide
Buyers should specify material type (e.g., ASTM A36 carbon steel), surface treatment (galvanized, painted), panel dimensions, and load ratings (e.g., ANSI/NAAMM standard loads). Custom fabrication (cutouts, curves) increases lead time and cost. Bulk orders (100+ m²) often qualify for discounts. Reliable suppliers provide mill test reports, CAD drawings for approval, and packaging suitable for overseas shipping. Compare quotes based on FOB or CIF terms, and verify certifications like ISO 9001. For projects, request samples to check finish quality and dimensional accuracy.
Related Manufacturers
- 主营：踏步板、钢格板定做、平台格栅板、排水沟盖板、镀锌钢格栅板、不锈钢格栅板、加厚镀锌钢格板、排水沟盖格栅板、电厂防滑格栅板、平台镀锌钢格板、检修平台走道板、平台检修走道板
- 主营：齿形防滑网格板、不锈钢钢格板、踏步板、钢格板、钢格栅、镀锌钢格板、插接钢格板、异形钢格板、复合钢格板、钢格板吊顶、沟盖板、平台沟盖板
- 主营：钢格板、钢格栅、钢格栅板、格栅板、网格板、网格栅、网格栅板、镀锌钢格板、镀锌钢格栅、镀锌钢格栅板、不锈钢钢格板、不锈钢格栅、不锈钢格栅板、镀锌盖板、钢格栅盖板、沟盖板、地沟盖板、水沟盖板、排水沟盖板、下水道盖板、网格盖板、格栅盖板、格栅踏步板、踏步钢格栅、踏步钢格板
- 主营：钢格板、热镀锌钢格板、沟盖板、平台钢格板、平台钢格栅、钢格栅板、踏步板、楼梯踏步板、水沟盖板、不锈钢钢格板、不锈钢钢格栅、复合钢格板
- 主营：石笼网、球场围栏、操场围网、钢格板、运动场围栏、运动场围网、体育场勾花网、护坡生态格网、运动场防护网、篮球场勾花网、羽毛球场隔离网、学校操场防护网
- 主营：沟盖板、钢格板、格栅板、齿形防滑网格板、热镀锌钢格网板、检修平台走道板、车间平台踏步板
- 主营：圆孔冲孔筛网、别墅铸铁围栏、过滤筛网、钢格栅、镀锌沟盖板、重型钢格板、钢格栅板、排水沟盖板、金属冲孔网板、热镀锌钢格板、不锈钢冲孔板、不锈钢格栅板、外墙装饰冲孔板、对插防滑网格板、铁艺护栏、隔离护栏网
- 主营：钢格板、钢格踏板、钢格栅板、水沟盖板、楼梯踏步板、光伏走道板、下水道盖板、焊接沟盖板、镀锌格栅盖板、热镀锌格栅板、楼梯踏步格栅板
- 主营：踏步板、钢格板、走道板、格栅板、格栅盖板、排水沟盖板、重型插接沟盖板、洗车房水篦子
- 主营：下水道沟盖板、钢格板、集水坑盖板、楼梯踏步板、异形钢格板、重型插接格板、钢格栅、钢格板平台、平台踏步板、插接钢格板平台、镀锌喷漆低碳钢板、网格水沟盖板、观景走道平台钢格栅、异形平台格栅、复合花纹盖板、304不锈钢格栅、工业平台钢格栅、下水道篦子
- 主营：平台钢格板、平台钢格栅、排水沟盖板、热镀锌钢格栅板、楼梯踏步板、景区栈道钢格板、复合钢格板、异型钢格板
- 主营：踏步板、钢格栅、热镀锌钢格栅、平台钢格板、走廊脚踏板、钢格栅板
- 主营：热镀锌格栅板、钢格板、钢格栅、沟盖板、钢格栅板、平台钢格板、踏步板、镀锌钢格板
- 主营：玻璃钢电缆桥架、槽式电缆桥架、梯式电缆桥架、波纹板桥架、玻璃钢格栅、专用网格板树篦子、养殖网格板、花纹盖板格栅、加强电缆桥架、玻璃钢管道、玻璃钢夹砂管道、玻璃钢通风管道、玻璃钢排水管道、泵站
- 主营：钢格板、钢格栅、格栅板、不锈钢格栅、不锈钢钢格板、镀锌钢格板、镀锌钢格栅、水沟盖板、沟盖板、钢格栅盖板、格栅盖板、钢格板踏步板、平台钢格板、压焊钢格板、齿形钢格板、防滑钢格板、热镀锌钢格板、插接钢格板、复合钢格板、异形钢格板、钢格栅板、热浸锌钢格板、镀锌格栅板
- 主营：不锈钢格栅板、平台地漏网格
- 主营：格栅板、水沟盖板、不锈钢钢格板
- 主营：排水管、桥架管箱、地埋管道、格栅盖板、地网格板、洗车房盖板、玻璃钢格栅、排水沟盖板、玻璃钢树池格栅、槽式梯式波纹板、电缆桥架、玻璃钢桥架、排水排污管、玻璃钢管道、大口径管道、切割拼接网格、除臭玻璃钢管、桥架电缆线槽、电力电缆保护管、耐高温电缆线架、通风排污缠绕管
- 主营：走线槽、电缆管、树篦子、地格栅、地沟盖板、玻璃钢格栅、污水池网格板、防滑排水格栅、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、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：沟盖板、格栅板、钢格板、网格板、踏步板、钢盖板、钢格盖板、镀锌格栅、地网格栅、排污防护板、金属楼梯踏板、小区雨水井盖板、市政雨水篦子
- 主营：市政护栏、声屏障、边坡防护网、施工围挡、球场围网、铸铁护栏、石笼网、刀片刺绳、防抛网、拒马护栏
- 主营：勾花网、球场围网、球场围栏、整流层钢格栅板、运动场栅栏、篮球场栅栏、体育场围网、篮球场护栏、铁丝网围网、排球场场地、铁丝网防护网、体育场防护网、绿色场地围网、球场地面施工、护栏网围栏网、篮球场地围网
- 主营：球场围网、护栏网、边坡防护网、钢格板、钢格栅板、锌钢护栏
- 主营：锌钢护栏、球场围网、车间隔离网、钢格板、钢格栅板、网格板、水沟盖板、踏步板、排水沟盖板、钢板网护栏、格栅板、桥梁防抛网、双边丝护栏网、双圈护栏网、桃型柱护栏网、石笼网、格宾网、边坡防护网、主动防护网、被动防护网、篮球场围网
- 主营：围栏网、防护网、球场围网、镀锌钢格栅板、楼梯踏步板、沟盖板、不锈钢格栅板、钢格板、运动场围栏、锌钢围栏
- 主营：钢格栅板、热镀锌钢格板
- 主营：圆孔网、铝合金、冲孔网、冲孔板、热轧板、冷轧板、锰钢板、洞洞板、镀锌板、筛网板、网孔板、不锈钢板、冲孔筛板、冲压筛板、带孔铝板、冲压网板、穿孔钢板、冲孔铝板、穿孔铝板、不锈钢铝板、通风散热板、镀锌穿孔板、洞洞网、冲压筛网、冲孔筛网
- 主营：玻璃钢、脚踏网、热镀锌、沟盖板、钢格板、格栅板、钢盖板、钢格栅、复合板、格珊板、网格板、梯踏板、网格栅、格栏板、脚踏板、钢梯板、钢板网、踏步板、格栏栅、水篦子、养鸽子、机械平台、镀锌立柱、扁铁地网、镀锌围网
- 主营：钢格板、格栅板、钢盖板、镀锌格栅板、钢格栅、地沟盖板、镀锌格栅、花纹盖板、平台踏步板、镀锌沟盖板、热镀锌钢格板、钢格栅沟盖、球接栏杆、球形立柱
- 主营：踏步板、沟盖板、格栅板、防滑格栅、防滑网格板、平台方格板、平台钢格板、不锈钢钢格板、钢格板、镀锌格栅板、钢格栅板
- 主营：钢格栅板、镀锌钢格板、沟盖板、复合钢格板、平台钢格板、钢格板、网格板、不锈钢钢格板、镀锌复合钢格栅板、排水沟盖板、楼梯踏步板、定制钢格板、定制钢格栅板
- 主营：下水道井盖、树篦子、球接栏杆、沟盖板、镀锌钢格栅板、复合钢格板、踏步板、钢格板、热镀锌钢格栅、钢盖板、不锈钢钢格板、不锈钢格栅板、不锈钢下水道格栅、热镀锌树池盖板、钢格栅树池、平台格栅踏步板、镀锌平台格栅马道、防滑楼梯踏步板、镀锌排水沟盖板、网格板、栅格板、不锈钢沟盖板、钢格栅井盖、鸽笼网
- 主营：钢格板、格栅板、压焊钢格板、镀锌钢格板、镀锌钢格栅板、复合钢格板、对插钢格板、插接钢格板、踏步钢格板、标准钢格板、格栅钢格板、踏步板钢格板、钢格栅板、镀锌格栅板、玻璃钢格栅板、格栅板盖板、热镀锌格栅板、平台格栅板、不锈钢格栅板、楼梯钢格板、齿型钢格板、优质钢格板、化工厂钢格板、不锈钢沟盖板、齿形防滑钢格板
- 主营：花纹盖板、不锈钢格栅、楼梯踏步板、电缆沟盖板、热镀锌钢格栅
- 主营：踏步板、钢格板、格栅板、复合踏板、雨水篦子