DE1486496U - - Google Patents

Info

Publication number

DE1486496U

DE1486496U DENDAT1486496D DE1486496DU DE1486496U DE 1486496 U DE1486496 U DE 1486496U DE NDAT1486496 D DENDAT1486496 D DE NDAT1486496D DE 1486496D U DE1486496D U DE 1486496DU DE 1486496 U DE1486496 U DE 1486496U

Authority

DE

Germany

Prior art keywords

manhole

edge

helix

wear

helical

Prior art date

Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)

Active

Links

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• XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
• 229910052742 iron Inorganic materials 0.000 claims description 4
• 231100000518 lethal Toxicity 0.000 claims 1
• 230000001665 lethal effect Effects 0.000 claims 1
• 230000002787 reinforcement Effects 0.000 claims 1
• 239000003245 coal Substances 0.000 description 2
• 238000003466 welding Methods 0.000 description 2
• 229910001018 Cast iron Inorganic materials 0.000 description 1
• CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical class [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
• 229910000831 Steel Inorganic materials 0.000 description 1
• 229910000754 Wrought iron Inorganic materials 0.000 description 1
• 238000009434 installation Methods 0.000 description 1
• 239000000463 material Substances 0.000 description 1
• 230000001681 protective effect Effects 0.000 description 1
• 239000010959 steel Substances 0.000 description 1