Khaya Magica
- Manufacture anti-slip plastic steps for use where corrosion presents a problem such as concrete and brick sewers, stormwater manholes, and reservoirs.
- http://www.khayamagica.co.za

GU International
- Manufacture manhole systems and selfleveling frames and covers. Includes downloadable product catalog and Autocad drawings.
- http://www.gu-international.com/

Ducast Factory L.L.C.
- Produce manhole , ductile iron , and cast iron covers, ductile iron and cast iron gratings, gully , access and recess covers. Dubai .
- http://www.ducast.com/

Hern Iron Works 1991, Inc.
- Manufacture a range of covers, frames and grates.
- http://www.hernironworks.com/municipal.html

Crescent Foundry Company Pvt. Ltd.
- Manufacture gray iron and ductile iron castings used in water distribution, drainage, and sewerage. Includes product specifications and photographs.
- http://www.crescentfoundry.com/

Manhole Systems Inc.
- Manufacturers of adjustable manhole riser rings, manhole cover extension rings, and monument and valve box risers for highway paving projects.
- http://www.manholesystems.com/

Hermelock (Malta) Ltd
- Manufacturers of cast lightweight, recyclable composite material manhole covers. Withstands loading of up to 40 tonnes.
- http://www.hermelock.com/

Deeter Foundry, Inc.
- Produce gray iron castings for the construction industry. Product line includes manhole frames and covers, storm sewer inlet frames, grates and curbs, trench grating and tree grates.
- http://www.deeter.com/

Gaozit Enterprise
- Manufacturer of cast iron products, which mainly include: cast iron manhole covers and cast iron pipe fittings . China .
- http://www.gaozit.com/

Nandikeshwari Iron Foundry (P) Ltd
- Manufacturers of sanitary, water works, industrial, ornamental and agricultural castings. Products include manholes rings and covers, grates and frames and manhole steps. India .
- http://www.nifl.com/

Doug Meadows Company
- Manufacturer's representative of manhole cover extractors, manhole risers and other products involved in sewage and water municipalities.
- http://www.dougmeadows.com/

Bengal Iron Corporation
- Manufacture and export grey iron castings including municipal castings, manhole covers, grates, hydrants and other industrial castings. India.
- http://www.bicindia.com

American Highway Products Ltd.
- Manufacture manhole risers, flexible rings, and cover sealing products . Includes a product overview and photographs.
- http://www.americanhighwayproducts.com/

Neenah Foundry Company
- Supplier of municipal castings, including manhole frames, lids and grates, trench castings and decorative tree grates.
- http://www.nfco.com/

Bass and Hays Foundry Inc.
- Wholesale and retail sales of cast and ductile iron castings. Products include manhole, inlet and other drainage covers. Includes online drawings and specifications.
- http://www.basshays.com/

Balco Inc.
- Manufacture trench grates and frames. Includes product specifications and CAD drawings .
- http://www.balcousa.com/

LeBaron Foundry Inc
- Manufacturer of municipal castings, frames, manhole covers and grates .
- http://www.lebaronfoundry.com/

Feing Tai (Handan) Alloy Casting Co., Ltd.
- Manufactures and supplies ductile and grey iron manhole covers, grates, pipes, fittings and ornamental parts.
- http://www.fengtaicasting.com/