Metal Welded Manhole Cover (Type 2) – Yantai Daxing Steel Structure Co., Ltd.

PRODUCT PARAMETERS

Description

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Description

Metal welded manhole cover (Type 2) — suitable for medium-to-heavy load applications. Features welded high-strength steel construction with hot-dip galvanized surface for superior corrosion resistance.

Product Specifications

Parameter	Specification
Model Code	HJ [Load Class][Diameter]·[Z for Smart]
Diameter Options	Φ600 / Φ700 / Φ800 / Φ900 mm
Load Classes	A (15KN) / B (125KN) / C (250KN) / D (400KN) / E (600KN) / F (900KN)
Material	Carbon Steel / Alloy Steel / Stainless Steel 304 or 316
Surface Treatment	Hot-Dip Galvanized (carbon/alloy steel); Untreated (stainless steel)
Opening Angle	180° (hinged lid)
Key Features	Anti-Slip · Anti-Theft · Anti-Fall · Anti-Displacement · Noise-Free · Easy-Open
Standards	T/CASME 2152—2026 / GB/T 23858 / EN124:2015
Custom Sizes	Available upon request

Load Class Selection Guide

Load Class	Test Load (KN)	Recommended Applications
A	15	Pedestrian paths, parks & landscaping (no vehicle access)
B	125	Pedestrian roads with vehicle access, underground small car parks
C	250	Residential areas, alleys, light vehicle roads
D	400	Main roads, highways, high-grade expressways
E	600	Large freight terminals, airport taxiway outer areas
F	900	Airport taxiways (aircraft load)

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 load class should I choose for my project?

Choose based on your traffic conditions: A (15KN) for pedestrian-only zones; B (125KN) for light vehicle access; C (250KN) for residential/light roads; D (400KN) for main roads and expressways; E (600KN) for freight terminals and airports; F (900KN) for aircraft taxiways. When in doubt, choose the next higher class for safety margin.

What sizes are available?

What materials and surface treatments are available?

Does it support smart IoT monitoring?

What is the lead time and MOQ?

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?

PRODUCT PARAMETERS

Description

Product Specifications

Load Class Selection Guide

Applicable Standards

Frequently Asked Questions

Request a Quote

FAQs

REQUEST A QUOTE

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