This standard specifies the precision requirements for the manufacture and installation of ship cargo hatch covers, doors, windows, ladders, poles and other outfitting parts. This standard is applicable to conventional steel seagoing ships of 3,000 tons and above, and can be used as a reference for ships below 3,000 tons and repair ships. CB/T 3324-1995 Precision requirements for steel outfitting parts CB/T3324-1995 Standard download decompression password: www.bzxz.net

Shipbuilding Industry Standard of the People's Republic of China
CB/T 3324-1995
Precision of Steel Fittings
Published on 1995-12-19
Published by China State Shipbuilding Corporation
Implemented on 1996-08-01
Shipbuilding Industry Standard of the People's Republic of China
Precision of Steel Fittings
Subject Content and Scope of Application
CB/T3324--1995
Classification Number: U06
Replaces CB*3324-87
This standard specifies the precision requirements for the manufacture and installation of fittings such as ship cargo hatch covers, doors, windows, ladders, and rods. This standard applies to conventional steel seagoing ships of 3,000 tons and above, and can be used as a reference for ships below 3,000 tons and ships under repair.
2 Reference standards
CB*3326 container guide rails
3 Precision of manufacturing and installation of steel weathertight cargo hatch covers The precision requirements for manufacturing and installation of rolling cargo hatch covers are shown in Table 1. 3.1
Length (whole cabin)
Length (single piece)
Hatch cover
Height of cover
Diagonal length (whole cabin)
Diagonal length (single piece)
Flatness of four corners of cover bottom surface (single piece)
Approved by China State Shipbuilding Corporation on December 19, 1995 Standard scope
Allowable limit
Implementation on August 1, 1996
Dimension deviation of side plate, end plate and top plate
Intermediate indirection
head and water
Secure structure
Dimension deviation
Vertical deflection of side plate bottom
Transverse curvature of side plate bottom
Vertical deflection of end plate bottom
Transverse curvature of end plate bottom
Flatness of top plate
Gap between cover plates
Pre- Plate up-down offset
Gasket groove width
Compression strip and gasket center
Compression strip end face
Side plate left-right offset
Gasket groove height
Gasket compression
CB/T3324-1995
Continued Table 1
Standard range
Allowable limit
tCompression
Strip thickness
Roller installation size
Compression device
Installation size deviation
t||Hatch cover
Gap offset with hatch plate
Hatch panel
Plate size
Traveling roller distance from hatch cover
Balancing roller distance from hatch cover
Traveling roller height
Balancing roller height
Traveling roller installation spacing
Balancing roller installation spacing
Holder height
Holder spacing
Pad contact
Direct contact
Coaming height
Diagonal length
CB/T 3324-1995
Continued Table 1
Standard range
Ds-- De
Allowable limit
.L+aL..
Hatch face
plate size
Pressure strip
Installation dimension deviation
Guide rail,
Guide plate installation dimension
End panel flatness
Side panel flatness
Flatness of any 1m length (end and side panels)Four corners flatness of hatch panel
Pressure strip and gasket center
Horizontal in length direction
Horizontal in width direction
Limiting guide rail and roller center line
Guide plate to hatch center line
Verticality of guide plate
Note: ①L, D are nominal dimensions. ②* indicates the dimension deviation after the gasket is pressed. CB/T3324—1995
Continued Table 1
Standardized range
3.2 The requirements for manufacturing and installation accuracy of foldable cargo hatch covers are shown in Table 2. ±3
Length (whole cabin)
Length (single piece)
Hatch cover
Dimension deviation
Cover plate height
Diagonal length (whole cabin)
Diagonal length (single piece)
Flatness of four corners of cover bottom surface (single piece)
Standard range
Allowable limit
tThickness of clamping strip
Allowable limit
Clamping strip
Side plate,
End plate and
Top plate
Dimension deviation
Middle joint
Head and water
Sealed structure
Dimension deviation
Roller installation
Side plate bottom Vertical deflection
Transverse curvature of side plate bottom
Vertical deflection of end plate bottom
Transverse curvature of side plate bottom
Flatness of top plate
Space between cover plates
Top plate vertical offset
Width of gasket groove
Center of clamping strip and gasket
End face of clamping strip
Left and right offset of side plate
Height of gasket groove
Compression of gasket
Distance between roller and center line of hatch cover
Installation height
CB/T3324-1995
Continued Table 2
Standard range
Allowable limit
t is clamping
Thickness of strip
Clamp||t t||Installation dimension deviation
Hatch cover
Gap deviation
Plate size
Hatch surface
Plate size
Holding strip
Installation dimension deviation
Holder height
Holder spacing
Pad contact
Direct contact
Diagonal length
Flatness of end panel
Flatness of side panel
CB/T3324—1995
Continued Table 2
Standard range
Flatness of any 1m length (end and side panels) Flatness of four corners of hatch panel
Center of holding strip and sealing gasket| |tt||Horizontal degree in length
Horizontal degree in width
Allowable limit
t is the thickness of the pressure strip
Intermediate hinge
chain and main hinge
Installation position dimension
Main cylinder
eye plate
Installation dimension deviation
CB/T3324—1995
Continued Table 2
Standard range
Between main hinge and hatch cover base line (length, width direction) ALgl
Between intermediate hinge and hatch cover base line (length, width direction)
Between main cylinder eye plate and hatch cover base line Note: ①L, D are nominal dimensions.
②* indicates the dimension deviation after the sealing gasket is compressed. ALs2
3.3 The requirements for manufacturing and installation accuracy of box-type cargo hatch covers are shown in Table 3. Item
Hatch cover
Dimension deviation
Side plate,
End plate and
Deflection size
Watertight structure
Height of cover
Diagonal length
Flatness of four corners of cover bottom
Vertical deflection of side plate bottom
Transverse curvature of side plate bottom
Vertical deflection of end plate bottom
Transverse curvature of end plate bottom||tt ||Top plate flatness
Height of gasket groove
Width of gasket groove
Standard range
Allowable limit
Allowable limit
Holder
Installation dimension
Dimension deviation
Hatch cover
And coaming
Hatch painting
Plate size
Hatch surface
Plate size
Holder strip
Installation dimension
Dimension deviation| |tt||Height of clamp
Pitch between clampsWww.bzxZ.net
Pad contact
Direct contact
Diagonal length
Flatness of end panel
Flatness of side panel
CB/T3324-1995
Continued Table 3
Standard range
Flatness of any 1m length (end and side panels) Flatness of four corners of hatch panel
Center of clamping strip and sealing gasket
Pressure Levelness of tightening strip in length direction
Levelness of tightening strip in width direction
Compression of gasket
Allowable limit
t is the thickness of tightening strip
On hatch cover
Container
Foot deviation
Deviation in length direction between feet
Deviation in width direction between feet
Deviation in height direction between feet
Length of diagonal
Note: ①L, D are nominal dimensions.
CB/T 3324-1995
Continued Table 3
Standard range
②* indicates the deviation of the size after the gasket is compressed. 3.4 The requirements for the manufacturing and installation accuracy of sliding cargo hatch covers are shown in Table 4. ±2
Length (whole cabin)
Length (single piece)
Hatch cover
Dimension deviation
Side plate,
End plate and
Top plate
Dimension deviation
Cover plate height
Diagonal length (whole cabin)
Diagonal length (single piece)
Flatness of four corners of cover bottom surface (single piece)
Vertical deflection of side plate bottom
Transverse deflection of side plate bottom
Vertical deflection of end plate bottom
Transverse deflection of end plate bottom
Top plate flatness
Di- D2
Standard range
Allowable limit
Allowable limit
Middle joint
Head and water
Secure structure
Dimension deviation
Roller installation dimension
Compression device
Installation dimension deviation
Hatch cover
And coaming
Gap deviation
Gap between cover
Up and down offset of neck plate
Gasket groove width
Compression strip and gasket center
End face of clamping strip
Side plate left and right offset
Height of sealing groove
Compression of sealing gasket
Distance between roller and hatch cover centerline
Roller installation height
Roller clearance
Height of clamp
Clamping device spacing
Pad contact
Direct contact
CB/T3324-—1995
Continued Table 4
Standard range
Allowable limit
T/2
t is clamping
Strip thickness
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