Marine Steel Manhole Covers Type a/B Ship Hatch Cover

• After-sales Service: 12 Months
• Warranty: 12 Months
• Classification Society Certification: CCS, ABS, BV, Lr, Gl, Dnv, Rina, etc.
• Model NO.: TH122
• Color: Customized
• Standard Component: Non-Standard Component
• Open Style: Folding
• Material: Steel, Aluminum
• Function: Watertight and Oiltight
• Model: Type a/B Hatch Cover
• Transport Package: Export Standard
• Trademark: TH
• Origin: China
• HS Code: 76101000
• Production Capacity: 2000PCS/Month

Product Description

Product Description

1.Product name : Marine Steel  Manhole Covers Type A/B  Ship Hatch Cover
2.Material:Steel, aluminum
3.Function:watertight and oiltight 

Detailed instruction

 1.Manhole cover is a general term for the cover plate with sealing performance and its fixing accessories installed on the manhole. Marine manhole covers can be divided into oblong and round shapes according to their shapes, among which oblong manhole covers are widely used. According to its tightness, it can be divided into oil-tight and water-tight. The difference between the two is the material of the sealing gasket. Oil-tight should be made of oil-resistant rubber, and water-tight should be made of sea (fresh) water-resistant rubber.
2. Main Material   
The cover plates, coaming plates and seat rings of the manhole cover are usually made of hot-rolled carbon steel or made of the same material as the hull structure where the manhole cover is installed, gaskets and handles are made of ordinary carbon steel, sealing gaskets are made of flame retardant oil-resistant or sea (light) water-resistant rubber, bolts or studs are made of stainless steel or carbon steel, nuts are made of carbon steel, stainless steel or brass. Bolts, studs, nuts and gaskets made of carbon steel should be galvanized.

 

Product Parameters

Drawing & Specifications:

A:  manhole cover with coaming

B:  flat manhole cover

C:  sunk manhole cover

type	clear size	l1	l2	l3	b1	b2	b3	s	bolt		weight kg
		mm							dia	qty
A	450*350	450	470	570	350	370	470	4	M20	16	23.2
								6			30.8
								8			36.9
								10			45.8
	600*400	600	620	720	400	420	520	6		20	48.8
								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

 

type	clear size	l1	l2	l3	b1	b2	b3	s	bolt		weight kg
		mm							dia	qty
B	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			61.3
								14			67.6
	800*600	800	820	920	600	620	720	12		26	57.2
								14			75.2
								16			82.8
								18			89.9
	800*400	800	830	930	400	430	530	12		24	56.8
								14			63.2
								16			69.2
								18			76.2

 

Detailed Photos

 

 

Our Advantages

1.Our Shipyard:Ningbo Zhenhe shipyard, and now Taihang is the branch representative of our yard.
2.Our founding team has experience of more than 15 years in ship building and ship repair with our own engineer and designer.
3.Equipment quality guarantee: Based on shipyard feedback, we built up manufacturer file to ensure the good quality of the products. Also we can send our engineers to help our clients to install and test these exported equipment.
4.We are a second hand ship broker to help you find the satisfied used different kind vessels.
5.We are able to provide the CKD kits and one-stop service based on our laser-cutting machine and purchase ability
6.We have a very professional design and technical team to work out perfect plan for our clients and help to slove out any matters with pre-sale and after-sale.
7.Customer Distribution:  Tananzia, Rwanda, India(Mumbai and Kalkatta), Suva,  Portugal, Russia, Nertherland, Iceland, Denmark, Malaysia, Mexico......