Dear Managers, Nice to get your contacts from the internet. Good day! This is Frank from GPLCO Steel products, I am writing to you to establish a long-term trade relations with you. our company is mainly engaged in exporting black metal and products , including Round ductile iron manhole cover; square ductile iron manhole cover; gully gratings etc. products standard: EN124 loading weight : A15 B125 C250 D400 E600 F900.Paint characteristic: Bitumen or epoxy painting The manhole covers shall be made of ductile iron ; cast iron ; cast steel GG50 and carbon steel Q235 , the products would be galvanized to anti-corrosion . we also take care of other castings , like auto parts , pipe fittings ect. we accept OEM according to your requirement and drawings. best regards and waiting your earliest answer Frank GPL CORP EMAIL: gpl3000@yahoo.com GSM : +86 13810849101 Fax:+861058850591 Skype: frank.feng98 Address: Beijing disctrict Beijing City ,China https://www.ironmanholecover.com/