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Item name	Ship Manhole covers Marine alloy manhole cover
Feature	1) High load rating and strength    2) Against theft and safety options    3) Durable service life.    4) Free design

 

 

 

 

 

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	23.2
							6			30.8
							8			36.9
							10			45.80
600*400	600	620	720	400	420	520	6		20	48.80
							8			59.2
							10			69.3
							12			79.6
800*600	800	820	920	600	620	720	8		26	52.4
							10			65.8
							12			78.2
							14			90.2