The standard HM-30® 30″ ductile iron manhole ring and locking hinged cover set, marked “SANITARY SEWER,” features a slip-resistant surface with the LLLL® registered trademark. This stock item is H-20 traffic rated when properly installed in reinforced concrete and is made from uncoated cast ductile iron (ASTM A536, grade 80-55-06, unless specified). This item may be custom branded or personalized enabling you to identify your municipal or utility infrastructure with a logo or special letterings, offering flexibility for specific project needs. We stock many different styles of custom logos and lettering. Proudly made in the USA, it ensures durability and reliability for infrastructure projects. Contact Bass & Hays or call us today Toll Free 1-800-258-2278 -or- 972-263-1360 DFW Metro to check stock, request drawings or submittals, BABA, AIS or LEED certifications, or place orders.
