Marine Rising Manhole Cover Type A

Standard: CB/T19-2001

Marine Manhole Cover is used for manhole on the oil tanks, water tanks, voil tanks and other tanks on various shipes. It is fixed on the falt positions on the hold bottom, deck and bulkhead.It is watertight and oiltight.There are Type A,B,C & D. The shape can be round, oval, square.

*Manhole Cover Type A is also called as Marine Rising Manhole Cover.

Cover: Carbon Steel

Coaming: Carbon Steel

Seal Ring: NBR

Bolt, Nut, Washer: Stainless Steel, Caron Steel , Copper

Model	Nominal Size	L	L1	L2	B	B1	B2	S	Bolt		Weight
	LxB								Diamter	Quantity	kgs
A	450x350	450	470	570	350	370	470	4	M20	16	23.2
								6			30.8
								8			36.9
								10			45.8
	600x400	600	630	720	400	420	520	6		20	48.8
								8			59.2
								10			69.3
								12			79.6
	800x600	800	820	920	600	620	720	8		26	52.4
								10			65.8
								12			78.2
								14			90.2

*The coaming height (100MM in the drawing) can be adjusted according to the customer's request.