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Marine Watertight Bolted Manhole Cover For Sale

Marine Watertight Bolted Manhole Cover For Sale

1.Types:manhole cover.

2.Material:steel&aluminum alloy.

 

B type manhole cover

 

Nominal

 size

L1

L2

L3

B1

B2

B3

S

Fastenings

Weight

(kg)

mm

Dia.

Q’ty

 

   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

6

20

49.5

8

55.6

10

61.2

12

67.6

800*600

800

820

920

600

620

720

8

26

67.2

10

75.2

12

82.8

14

89.9

800*400

800

830

930

400

430

530

12

24

56.80

14

63.2

16

69.20

         18

          76.20

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   

 

 

 

 

   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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