Marine Sunk Manhole Cover Type D

Marine Sunk Manhole Cover Type D:

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.There are Type A,B,C & D. The shape can be round, oval, square.

*Manhole Cover Type D is Marine Sunk Manhole Cover.And in GB11628-89, it is Type E.

 

 

Main Material:

Cover: Carbon Steel Q235

Coaming: Carbon Steel Q235

Seal Ring: NBR

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

 

Main Size List(mm):

Model	Nominal Size	L	L1	L2	B	B1	B2	S	Bolt		Weight
	LxB								Diamter	Quantity	kgs
D1	450x350	450	570	620	350	470	520	14	M20	16	73.1
								16			81.6
								18			90.2
	600x400	600	720	770	400	520	570	14		20	83.6
								16			88.8
								18			94.8
	800x600	800	930	970	600	720	770	14		26	108.4
								16			120.6
								20			149.8
D2	800x400 (Oval)	800	930	980	400	530	580	14		24	89.4
								16			102.5
								20			127.8