High Quality Marine Steel Watertight Typea/B/C Hatch Cover

• After-sales Service: 12 Months
• Warranty: 12 Months
• Classification Society Certification: CCS, ABS ,Dnv, Gl ,Lr ,Rin
• Color: Customized
• Standard Component: Non-Standard Component
• Open Style: Opening
• Model NO.: TH 001
• Material: Steel
• Function: Water Tight Window
• Surface: Galvanized
• Transport Package: Standard Wood Packing
• Trademark: TH
• Origin: China
• HS Code: 7308900000
• Production Capacity: 2000PCS/Month

Product Description

 

Product Description

1.Product name : High quality Marine Steel Watertight Type Hatch Cover
2.Material:Steel, aluminum
3.Function:watertight and oiltight etc.

Detailed instruction

1.Hatch is a general term for the cover and its opening and closing device for closing various hatches on the ship. The main function of the hatch cover is to ensure that waves and rain will not invade the cargo hold, and some hatch covers also bear the weight of the cargo on the deck.

2. According to the size of the hatch, it is divided into large hatch covers and small hatch covers. The former is used for cargo holds for loading bulk cargo or vehicles, also known as cargo hatch covers; the latter is used for cargo holds for loading liquid cargo, refrigerated cargo, etc., as well as personnel access hatches and manholes. Small hatch covers are generally opened and closed by manpower, while large hatch covers must be opened and closed with electric or hydraulic drive mechanical devices.
3. According to the tightness, there are watertight, oiltight, gastight and non-tight hatch covers, etc. According to the different tightness requirements, the hatch cover plate and the adjacent parts are respectively equipped with cabin sealing devices or sealing devices composed of moulding, fillers, gaskets, compactor, etc.

4.Weathertight means that water should not penetrate into the ship under any wind and wave conditions. The tightness requirement of weathertight is lower than that of watertight. The closing devices of various openings on the freeboard deck and enclosed superstructures and enclosures, as well as the bulkhead deck or its upper deck, are required to be weathertight.
 

Hatch design requirements

1. The structural strength of all hatch covers on exposed decks should be equivalent to the strength of their adjacent structures;
2. The closing device of the hatch cover should be weathertight;
3. If the hatch cover of the vehicle deck bears vehicle load, the design pressure on the hatch cover should be checked for strength according to the value of the vehicle load.

Configuration selection

 

Part name	Material	Pros & Cons
Cover plate	AL6063	Good plasticity, moderate heat treatment strength, good welding performance and gorgeous color on the surface after anodizing treatment.
	Q235-A	Good toughness and plasticity, certain elongation, good weldability and hot workability
	Q235-B	Good welding performance, Good low temperature toughness
Coaming	AL6063	Good plasticity, moderate heat treatment strength, good welding performance and gorgeous color on the surface after anodizing treatment.
	Q235-A	Good toughness and plasticity, certain elongation, good weldability and hot workability
	Q235-B	Good welding performance, Good low temperature toughness
Lock	SUS304	Sturdy and not easy to damage, and resistant to seawater corrosion
	Q235-B	Good welding performance, Good low temperature toughness
Sealing	Neoprene rubber	Excellent Watertight performance
	Butadiene rubber	Excellent oil resistance, abrasion resistance and air tightness
Hinge	SS304	rustproof, less brittle
	Q235-A	Good toughness and plasticity, certain elongation, good weldability and hot workability
	Q235-B	Good welding performance, Good low temperature toughness
	Copper H62	good mechanical properties and easy to weld, but it is prone to corrosion and cracking.
Options according to user requirements
Parts	Remark	Features
Clips	Wing clips	Single side opening
	Wedge clips	Double side opening
	Wheel	Quick action
Hinge position	Long side, short side, four side equivalent

Drawing & Specifications

 

type	name	structure	hinge position
A	Single side opening	butterfly clip	A four sides equivalent
			AL long sides equivalent
			AS short sides equivalent
B	double sides opening	wedge  clip	B four sides equivalent
			BL long sides equivalent
			BS short sides equivalent
C	quick action	center rotation  clip	-

Type A

 

 

type	nominal size L*B	clear size L1*B1*R1	Cover size L2*B2	cover thickness t	Hatch		butterfly clip		weight kg
					t	H	dia	qty
A     AL   AS	450*630	420*600*100	508*688	4	4,6	100 150 200 250 450 600	M16	4	24.4
			512*692	6	6,8				31.1
			516*696	8	8,11				37.7
	530*530	500*500*100	588*588	4	4,6				24.2
			592*592	6	6,8				30.8
			596*596	8	8,11				37.4
	630*630	600*600*100	682*682	4	4,6		M20		31
			692*692	6	6,8				39.8
			696*696	8	8,11				48.5
	630*830	600*800*100	688*688	4	4,6				37.4
			692*892	6	6,8				48.5
			696*896	8	8,11				59.7
	830*830	800*800*100	888*888	4	4,6			6	47.1
			892*892	6	6,8				61.2
			896*896	8	8,11				75.3
	830*1230	800*1200*100	888*1288	4	4,6			8	65.2
			892*1292	6	6,8				85.3
			896*1296	8	8,11	800			175.2
	1030*1030	1000*1000*100	1092*1092	4	4,6				146.6
			1096*1096	8	6,8				190.9
	1330*1330	1300*1300*100	1396*1396	8	8,11				331.3

 

Type B

 

type	nominal size L*B	clear size L1*B1*R1	Cover size L2*B2	cover thickness t	coaming		butterfly clip	weight Kg
					t0	H
B   BL   BS	450*630	420*600*100	508*688	4	4,6	100 150 200 250 450 600	4	28.7
			512*692	6	6,8			35.4
			516*696	8	8,11			42
	530*530	500*500*100	588*588	4	4,6			28.5
			592*592	6	6,8			35.1
			596*596	8	8,11			41.7
	630*630	600*600*100	682*682	4	4,6			33.5
			692*692	6	6,8			42.4
			696*696	8	8,11			51.2
	630*830	600*800*100	688*688	4	4,6			39.7
			692*892	6	6,8			51.2
			696*896	8	8,11			62.3
	830*830	800*800*100	888*888	4	4,6		6	51.2
			892*892	6	6,8			62.3
			896*896	8	8,11			79.4
	830*1230	800*1200*100	888*1288	4	4,6		8	71.4
			892*1292	6	6,8			91.5

 

Type C

 

type	nominal size L*B	clear size L1*B1*R1	Cover size L2*B2	cover thickness t	coaming		centre rotation clip	weight Kg
					t0	H
C	530*530	500*500*100	588*588	4	4,6	150 200 250 450 600	4	44.8
			592*592	6	6,8			51.4
			596*596	8	8,11			58
	630*630	600*600*100	682*682	4	4,6			50
			692*692	6	6,8			58.7
			696*696	8	8,11			67.5
	Φ530	500	588	4	4,6			42.2
			592	6	6,8			47.5
			596	8	8,11			52.8
	Φ630	600	688	4	4,6			46.1
			692	6	6,8			63.2
			696	8	8,11			60.2

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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......