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  • New machine is running in new year 2018! Good fortune and success

    2018-01-25

    Our new branch-factory located in Anhui which manufacture ductile cast iron manhole covers is running offically

  • Why manhole covers are typically round

    2017-10-23

    Originally meant as a psychological assessment of how one approaches a question with more than one correct answer, the problem has produced a number of alternative explanations, from the tautological("Manhole covers are round because manholes are round.") to the philosophical....

  • SMC BMC Marterial Introduction

    2017-10-23

    SMC composites is the abbreviation of sheet molding compound and the Sheet molding compound. Main raw materials are composed of GF (special yarn), UP (unsaturated resin), low shrinkage additive, MD (packing) and various auxiliaries.

  • Manhole Covers In Wikipedia

    2017-10-23

    A robotics research paper in 2011 suggested that robots could examine the shapes of specific manhole covers and use them to calculate their geographic position, as a double-check on GPS data.

  • Manhole Cover Standard And Classify

    2017-10-23

    EN124 is a new section of the European region for the roadside gullies and vehicles and pedestrian traffic area used in the covers,This provision replaces the new standard of the old standard BS497 standard introduced in 1994 to divide the covers into six groups as follows: 10KN=1T﹒...

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