Ductile Iron Manhole Covers, Direct from Our Factory in China
Guangdong Hongcheng Building Materials Co., Ltd. manufactures ductile iron manhole covers in its own factory and supplies gully gratings and drainage products from Dongguan, stocked and checked at our Dongguan warehouse. Send your size and load class — we reply with a quotation.
Product Range
Manhole Covers, Gratings & Drainage Products
Six product lines for municipal drainage, roads and construction projects. Open a category for details, or send your drawings and sizes directly on WhatsApp.
Ductile Iron Manhole Covers
Round and square covers plus anti-settlement type, across the common size range. Our core product line.
B125 · C250 · D400 · E600Round / SquareAnti-settlement type View details →
Ductile Iron Gully Gratings
Frame-and-grating sets for roadside drainage inlets, in common sizes such as 300×500 and 400×600.
Frame + grating setsCommon sizes in stock range View details →
Drainage Channel Covers
Covers for linear drainage channels — for yards, roads, car parks and industrial sites.
Channel systemsCover options by channel width View details →
Hot-dip Galvanized Steel Gratings
Welded steel bar gratings with hot-dip galvanized finish, for trench covers, platforms and walkways.
Hot-dip galvanizedPanels & trench covers View details →
Stainless Steel Invisible Covers
Recessed decorative covers in 304 / 201 stainless steel that take paving infill and sit flush with the finished surface. Custom sizes available.
304 / 201 stainlessCustom sizesRecessed, paving infill View details →
Composite Resin Manhole Covers
Composite resin covers — a lighter alternative to cast iron for suitable locations, in round and square formats.
Round / SquareLightweight vs cast iron View details →Frame 800 mm
Cover 700 mm
How to Read Our Sizes: Cover × Frame
Our sizes are written as cover × frame. “700×800” means a 700 mm cover in an 800 mm frame — the first number matches the clear opening of your chamber. Measure the opening, and the first number is the one to match.
Featured Product
D400 Manhole Cover Supplier in China
Our main line is ductile iron manhole covers in round and square formats, including anti-settlement (self-levelling frame) type. Covers are supplied across the common domestic size range, in load classes B125, C250, D400 and E600.
- ✓Full size range — from small Ø300 covers to 700×800 and other common sizes.
- ✓Four load classes — B125, C250, D400 and E600 to match the installation location.
- ✓Anti-settlement type — available for road installations where frame settlement is a concern.
Our Factory
Produced in Our Own Factory
Our ductile iron covers, gully gratings and cast iron drainage covers are cast in our own factory and stocked at our Dongguan base in Liaobu Town, so specifications and weights can be checked against physical goods before dispatch.
You deal with one contact from first inquiry to loading: Li Xiaopeng.