Product Name: En124 B125 C250 D400 Ductile Iron Invisible Manhole Cover Heavy Duty Certification: ISO 9001:2008 Standard: Une En124 Surface Roughness: Ra0.05 Surface Treatment: Sand Blast Material: Iron Machining: CNC Machining Application: Street Road/Pavement/Car Park Area Sand Core Type: Resin Sand Core Casting Method: Thermal Gravity Casting Type: Clay Dry Sand Painting: Bitumin or as Customer's Requirement Class: B125/C250/D400 Technique: Casting Factory: Over 20 Yeas Experience Quotation Lead Time: Within 24 Hours Delivery: Punctual Delivery Item: Ductile Iron Sand Casting Manhole Cover Pressure: 12.5/25/40ton Trademark: MJ Transport Package: Pallet or as Customer's Requirements Specification: 420*420mm/520*520mm/620*620mm/720*720mm Origin: China HS Code: 73251090 Product Description Our products are exported to Europe,Asia and Africa for more than 15 years.Features:Anti-skid surface;Anti-oxidation coating.Ductile Iron Casting:Molding process:Green sand/Resin sandMolding method:Hand molding/Molding machineIndustry concerned:Municipal construction/Road construction/AutomotiveTechnical Data Sheet:Referenceframe SizeCover SizeManhole SizeHeightRemarksMJ-ZF-JG4242H5B125420*420mm380*380mm340*340mm50mmRELLE-40BMJ-ZF-JG5252H5B125520*520mm480*480mm440*440mm50mmRELLE-50BMJ-ZF-JG6262H5B125620*620mm580*580mm540*540mm50mmRELLE-60BMJ-ZF-JG7272H5B125720*720mm670*670mm600*600mm50mmRELLE-70BMJ-ZF-JG4242H10C250420*420mm380*380mm340*340mm100mmRELLE-40CMJ-ZF-JG5252H10C250520*520mm480*480mm440*440mm100mmRELLE-50CMJ-ZF-JG6262H10C250620*620mm580*580mm540*540mm100mmRELLE-60CMJ-ZF-JG7272H10C250720*720mm670*670mm600*600mm100mmRELLE-70CMJ-ZF-JG4242H10D400420*420mm380*380mm340*340mm100mmRELLE-40DMJ-ZF-JG5252H10D400520*520mm480*480mm440*440mm100mmRELLE-50DMJ-ZF-JG6262H10D400620*620mm580*580mm540*540mm100mmRELLE-60DMJ-ZF-JG7272H10D400720*720mm670*670mm600*600mm100mmRELLE-70DQuestions And Answers:Q:Why choose Mingjun products?A:We have our own factory,therefore we can assure the quality of each product and the competitive price.Q:Do you provide OEM service?A:Yes,we provide OEM service with best price.Q:Do you provide customized products?A:Yes,we provide customized products.Customer provide drawings and/or specifications,we can manufacture accordingly.