Metal Welded Grate Drain (Type 1)
PRODUCT PARAMETERS
Description
FAQs
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Description
Metal welded grate drain (Type 1) — rectangular design for road and plaza drainage channels. Fabricated from high-strength welded steel with hot-dip galvanized surface. Delivers excellent drainage performance and strong load-bearing capacity.
Product Specifications
| Parameter | Specification |
|---|---|
| Model Code | HB [Load Class][L size]×[W size] |
| Length (L) | 400 / 450 / 500 / 550 / 600 / 650 / 700 / 750 mm |
| Width (W) | 300 / 350 / 400 / 450 mm |
| Load Classes | A (15KN) / B (125KN) / C (250KN) / D (400KN) / E (600KN) |
| Material | Carbon Steel / Stainless Steel 304 or 316 |
| Surface Treatment | Hot-Dip Galvanized (carbon steel); Untreated (stainless steel) |
| Shape | Rectangular (standard) / Round (available) |
| Lock / Hinge | Optional: with or without locking hinge mechanism |
| Standards | T/CASME 2152—2026 / GB/T 23858 |
| Custom Sizes | Available upon request |
Load Class Selection Guide
| Load Class | Test Load (KN) | Recommended Applications |
|---|---|---|
| A | 15 | Pedestrian paths, parks (no vehicle access) |
| B | 125 | Pedestrian roads with vehicle access, small car parks |
| C | 250 | Residential areas, alleys, light vehicle roads |
| D | 400 | Main roads, highways, expressways |
| E | 600 | Large freight terminals, airport outer areas |
Applicable Standards
| Standard | Description |
|---|---|
| T/CASME 2152—2026 | Metal Welded Inspection Manhole Covers (led by Daxing) |
| GB/T 23858 | Chinese National Standard for Inspection Chamber Covers |
| EN124:2015 | European Standard – Gully Tops and Manhole Tops |
| GB/T 700 | Carbon Structural Steel |
| GB/T 3280 / 4237 | Stainless Steel Cold/Hot Rolled Plates |
| GB/T 13912 | Hot-Dip Galvanized Coating Requirements |
| GB 50661 | Steel Structure Welding Code |
Frequently Asked Questions
What sizes are available for grate drains?
Standard lengths (L): 400, 450, 500, 550, 600, 650, 700, 750 mm
Standard widths (W): 300, 350, 400, 450 mm
Model format: HB[Load Class][L]×[W] (e.g. HBC750×450 = Class C, 750×450mm).
Custom non-standard sizes available upon request.
What load classes are available?
Load classes A through E are available: A (15KN) for pedestrian areas, B (125KN) light traffic, C (250KN) residential roads, D (400KN) main roads, E (600KN) freight terminals and airports.
Is a locking or hinge mechanism available?
Yes. Both hinged (opens 180° for maintenance access) and lockable variants are available. Rectangular and round shapes are both offered.
What materials are available?
Carbon steel with hot-dip galvanized coating (most common), and stainless steel 304/316 for corrosive environments (food processing, coastal, chemical plants).
What is the lead time and MOQ?
No MOQ restriction. Standard products: 7–15 business days. Custom sizes: 25–35 days. Export packaging (wood crate/steel pallet) included as standard.
Request a Quote
For pricing, samples, or technical inquiries:
📧 ytdaxing@sina.com | 📱 WhatsApp: +86 13105352113
FAQs
What types of products can we offer?
We mainly offer steel grating, stair treads, trench covers, welded steel manhole covers, rainwater gratings, recessed manhole covers, and customized steel structure components.
Our products are widely used in petrochemical projects, nuclear power projects, municipal engineering, wastewater treatment plants, industrial platforms, residential areas, parks, ports, airports, and construction supporting facilities.
What logistics do we ship through?
For project orders, we provide integrated delivery support, including product coordination, packaging recommendations, loading arrangements, and shipment planning.
We can adjust the packaging method and delivery schedule according to different project requirements, and support batch delivery when needed. This helps customers reduce communication costs and keep project delivery more manageable.
Can it be customized as per our requirements?
We offer drawing customization, non-standard custom manufacturing and full supporting production for engineering projects.
Our technical team provides one-on-one technical communication. We adopt professional software for drawing deepening and arrange production strictly per your project demands. Customization is available on materials, surface finishes, load standards, dimensions and installation accessories.
What is our ordering process?
Our general ordering process is:
Requirement confirmation → Drawing/specification review → Technical communication → Quotation → Sample or drawing confirmation → Production → Quality inspection → Packaging → Delivery
For non-standard products, early communication and sample preparation usually take around one month. For regular production capacity, our steel grating output can reach about 100 tons per day, and our welded manhole cover output can reach about 1,000 sets per day.
What services are included in the after-sales service?
- 24/7 Service Hotline
- hour response for all inquiries and feedback
