| Customization: | Available |
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| After-sales Service: | 3 years |
| Warranty: | 5 years |
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| Place of Origin | Ningbo, China | Brand Name | Zhongzheng or customized |
| Application | Flooring ,Walkway, Trench Cover, Construction etc. | Material | Resin and Fiberglass Reinforced Plastic |
| Surface Treatment | Concave, Smooth, Gritted, checkered cover | Technique | Molded / Pultruded |
| Dimensions | Customized | Color | Yellow, green, red, grey etc |
| Shape | Customized | Feature | High Strength |
| Service Life | 10-30 years | Delivery Time | Shipped in 5 days after payment, mainly depend on quantity |
| Certificate | ISO9001 | OEM | Accepted |
Surface TypeResin, Fiberglass and Stuffing Selection
| Resin | Application Scope |
| Type O (Orthophthalic type) |
Generally used for ordinary corrosive environment and also for sea corrosion, faintly acid corrosion as well as weathering ageing environment. |
| Type I ( Isophthalic type) |
Generally used for the environment with stronger acidic corrosion or general one. |
| Type V ( Vinyl Ester type) |
Generally used for serious corrosive environment with acid, alkali, solvent etc. |
| Type P ( Phenolic type) |
Used for high fire resistance and low areas. |
| Fiberglass | |||
| Fiber Composition | Size | Property | Application Scope |
| Alkali-free Roving | 2400TEX or 4800TEX | It is of good permeability, high bond with resin matrix, which makes the products be of excellent mechanical properties and corrosion resistance. | Used for high strength requirement and corrosion-resistant. |
| Medium Alkali Roving | 2400TEX | It is of good permeability, high bond with resin matrix and high acid-resistance. | Generally used for serious corrosive environment |
| Stuffing | ||
| Stuffing Selection | Property | Application Scope |
| aluminium hydroxide powder | Flame-retarded, enhanced, oxygen index is above 28. | Flame-retarded, restraining smoke environment. |
| calcium carbonate powder | Enhanced, moderately lower cost. | No requirement for flame retardance. |
| No stuffing, pure resin | Good transparency | No requirement for flame retardance, high abrasion resistance. |
Molded Grating Specification
| Mesh Shape | Thickness (mm) |
Mesh Size (mm) |
Grating Size (mm) |
Weight (kg/m²) |
Open Area (%) |
| Normal Square Mesh | 13 | 38×38 | 1220×3660 | 5.5 | 87 |
| 13 | 50×50 | 1220×3660, 2000×2000 | 6.5 | 82 | |
| 20 | 38×38 | 1220×3660 | 9.2 | 69 | |
| 25 | 38×38 | 1000×3017, 1000×3000, 1000×3660 |
12.5 | 70 | |
| 25 | 40×40 | 1000×2000, 1000×3000, 1000×4000, 1200×3000 | 13.5 | 65 | |
| 30 | 38×38 | 1000×3017, 1000×4038, 1220×3660 | 14.5 | 65 | |
| 30 | 40×40 | 1000×2000, 1000×3000, 1000×4000, 1200×3000 | 15.5 | 53 | |
| 38 | 38×38 | 1000×3017, 1000×4083, 1220×3660 | 18.5 | 70 | |
| 38 | 40×40 | 1000×2000, 1200×3000, 1000×4000, 1500×3000 | 19.5 | 70 | |
| 50 | 50×50 | 1525×4025, 1220×3660, 1220×4025 | 21.5 | 78 | |
| 63 | 38×38 | 1220×3660 | 52 | 54 | |
| Mini Square Mesh | 30 | 19×19 | 1000×2000, 1000×3000, 1000×4000, 1200×2000, 1200×4000, 1500×3000 | 16.5 | 44 |
| 40 | 19×19 | 1000×2000, 1000×4000, 1200×2000, 1200×4000 | 21.5 | 45 | |
| 50 | 19×19 | 1220×3660 | 26.5 | 44 | |
| Micro Square Mesh | 30 | 15×15 | 1000×3000 | 19.5 | 45 |
| 30 | 13×13 | 1000×4083, 1220×3660 | 18.5 | 53 | |
| 38 | 13×13 | 1000×4083, 1220×3660 | 22.5 | 53 | |
| Rectangular Mesh | 25 | 100×25 | 1000×2000, 1000×3000, 1000×4000 | 13.5 | 69 |
| 28 | 100×50 | 1500×2000, 1500×4100 | 9.5 | 58 | |
| 38 | 152×38 | 572×3660 | 17.5 | 77 | |
| 38 | 152.4×25.4 | 1220×3660 | 21.4 | 56 | |
| 38 | 101.6×38.1 | 1220×3660 | 16.5 | 74 | |
| Heavy Duty Square Mesh | 50 | 50×50 | 1220×3660, 1220×4010 | 21.5 | 48 |
| 55 | 50×25 | 1500×3000 | 30.5 | 50 | |
| 60 | 38×38 | 1220×3660 | 45.5 | 63 |
Pultruded Grating Specification
| Type | Height (mm) | Top Edge Width(mm) | Space Between (mm) | Clearance Width (mm) | Open Area (%) | Estimated Weight kg/m2 |
| I-4010 | 25 | 15 | 25 | 10 | 40 | 17.8 |
| I-5010 | 25 | 15 | 30 | 15 | 50 | 15.1 |
| I-6010A | 25 | 15 | 38 | 23 | 60 | 12.2 |
| I-6010B | 25 | 8 | 19.8 | 11.8 | 60 | 13.7 |
| I-4015 | 38 | 15 | 25 | 10 | 40 | 22 |
| I-5015 | 38 | 8 | 30 | 15 | 50 | 19.1 |
| I-6015 | 38 | 15 | 38 | 23 | 60 | 16.2 |
| I-4012 | 30 | 15 | 25 | 10 | 40 | 19.1 |
| I-5012 | 30 | 15 | 30 | 15 | 50 | 16.1 |
| I-6012 | 30 | 15 | 38 | 23 | 60 | 13.1 |
| I-40125 | 32 | 15 | 25 | 10 | 40 | 19.8 |
| I-50125 | 32 | 15 | 30 | 15 | 50 | 17.4 |
| I-60125 | 32 | 15 | 38 | 23 | 60 | 13.5 |
| I-4020 | 50 | 15 | 25 | 10 | 40 | 28.5 |
| I-5020 | 50 | 15 | 30 | 15 | 50 | 24.2 |
| I-6020 | 50 | 15 | 38 | 23 | 60 | 20.1 |
| T-1210 | 25 | 38 | 43.4 | 5.4 | 12 | 17.9 |
| T-1810 | 25 | 38 | 50.8 | 9.5 | 18 | 13.8 |
| T-2510 | 25 | 38 | 50.8 | 12.7 | 25 | 13.6 |
| T-3310 | 25 | 41.3 | 19.7 | 61 | 33 | 11.2 |
| T-3810 | 25 | 38 | 61 | 23 | 38 | 11.8 |
| T-1215 | 38 | 38 | 43.3 | 5.2 | 12 | 19.6 |
| T-2515 | 50 | 38 | 50.8 | 12.7 | 25 | 16.7 |
| T-3815 | 50 | 38 | 61 | 23 | 38 | 14.2 |
| T-3320 | 50 | 25.4 | 38.1 | 12.7 | 33 | 21.7 |
| T-5020 | 50 | 25.4 | 50.8 | 25.4 | 50 | 17.2 |
| HL-4020 | 50 | 15 | 10 | 10 | 40 | 62.8 |
| HL-5020 | 50 | 15 | 15 | 15 | 50 | 52.2 |
| HL-6020 | 50 | 15 | 23 | 23 | 60 | 43.5 |
Application
Stairs
Walkways and platforms
Mining and industrial platforms
Marine applications - e.g. marinas, jettys and moorings
Architectural Solutions
Water trench covers
Chemical industry platforms and walkways
Water/Wastewater Treatment
Platforms and walkways where non electrical and thermal insulating properties are required
Fiber Reinfored Plastic Grating Bundled by belt, packed in pallet, carton ect.
Packing can be customized.
Ningbo Zhongzheng steel grating Co. Ltd. is a professional enterprise in R & D., design, steel grating, SMC grating field. With innovative and pragmatic, scientific developing philosophy, following the criterion of ISO9001, it provides steel grating, stair tread, compound steel grating, fiberglass grating, drainage pit/trench cover, railing & stanchion, etc. It products are widely used in petroleum, chemical industry, environmental protection, power plants, pharmaceutical, printing and dyeing, brewing water supply and drainage, transportation and other industries.
With its ten years of professional management experience and production in press welding steel grating, it is one of the few enterprises who have the technology of flat steel and galvanized steel grating in the industry. The plentiful resources, skilled team, and high level of management, make it be the fastest developed, most potential grating products supplier.
Ningbo Zhongzheng Steel Grating Co., Ltd strictly followed the brand management of "quality making value, innovation leading the future", to provide clients high quality assurance, drawing, mechanics calculation, data collation service. With high-quality products and services combined, it has been well recognized by clients all over the world. The products have been exported to different countries and regions, such as South Korea, Singapore, Thailand, Australia, France, Kenya, etc.
Contact Way
Contact Person: Sally
Expert Manufacturing
Robust Export Experience
Customization Capability
Competitive Pricing
Stringent QC & Certificate
Responsive Service
Q: Can you produce grating according to my specific project requirements?
A: Absolutely! Customization is our strength. We can tailor grating to your exact specifications, including panel size, bar spacing (bearing & cross bar), steel thickness, load class (e.g., AS/NZS 3996, BS 4592, ASTM A1011), surface finish (galvanized, painted, bare), and anti-slip type (serrated tooth, plain, others). Provide your drawings or specs for a precise quote.
Q: What quality standards and certifications do you adhere to?
A: We implement a strict quality control system throughout production (raw material inspection, in-process checks, final testing). While specific certifications can vary, we commonly produce grating meeting international standards such as AS/NZS 3996, ASTM A1011, or BS 4592. Certificates like ISO 9001 are held by our factory. Specific certification requirements can be discussed per order.
Q: What is your lead time for standard and custom orders?
A: Lead times depend on order quantity, complexity, and current schedule. For standard specification orders, production is typically 15-30 days. Custom projects may require 25-45 days. We provide a confirmed lead time with every order confirmation and prioritize efficient production to meet deadlines.
Q: Can you provide samples?
A: Yes, sample panels are available. Small sample pieces can often be provided for quality and specification verification. Larger sample panels may incur costs and shipping fees, which are usually deductible from a subsequent bulk order. Please inquire about your specific sample needs.
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