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Oval Flat Type Manhole Cover

　　CB/T 19-2001

　　Model B2

　　Oval Flat Type Manhole Cover

Model Nominal size L1 L2 L3 B1 B2 B3 S Fastener Weight(kg)
Diameter Quantity
B1 450*350 450 470 570 350 370 470 4 M20 16 28.9
6 33.8
8 37.2
10 41.2
600*400 600 620 720 400 420 520 8 20 49.5
10 55.6
12 61.2
14 67.6
800*600 800 820 920 600 620 720 12 26 67.2
14 75.2
16 82.8
18 89.9
B2 800*400 (Oval) 800 830 930 400 430 530 12 24 56.8
14 63.2
16 69.2
18 76.2
　　Stub is stainlesss steel SUS304 nut material could be steel, brass, stainless steel, as user's option.

　　Marked sample Long circular flat type manhole cover which nominal size 600*400, cover plate thickness 10.

　　Marked as MANHOLE COVER B1 600*400-10 CB/T19-2001

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