Marine Rectangular Window
Location: a rectangular window is arranged in a second level building, as
square and rectangular window for light or ventilation.
Structure:
inner side open type, outside open type, inside open type, drop type and fixed
type, etc., under pressure is less than 5m water column (the larger transparent
size the lower pressure resistant .)
The rectangular window is
arranged on the wall of the upper deck superstructure. rectangular window of
the periphery with a rubber seal, close with the bolt pressed, the requirements
to ensure weathertight.
Rectangular
window according to the size of the rib spacing with a suitable window, the
other to consider is water tight pressure. Transparent size 400mm x 300mm can
bear 50Pa pressure, 350mm x 50mm, 400mm x 550mm, 450mm x 600mm can be confined
to 20Pa. In the superstructure of the general compartment window, the large
size of the (550mm x 600mm, 600mm x 700mm, 800mm x 900mm) window is used to
request a wide driving room.
Welded
window
1.
Dimension
of wall opening:W1*H1*R1
2.
Hose
test shall be carried out as follow,hose nozzle diameter: >16 hosing
distance from window 2.5-3m, water pressure 0.2Mpa after maintain the pressure
fro 3 minutes no water mark could be found on the back of window
3.
Both
side of glass to be applied with removable plastic lamina
4.
Half-round
head bolts GB67-76 may be used for item
5.
During
installing the gap between window frame and wall as wall as the gap in way of
bolt hole to be filled with putty.
Fixed
window
1.
the
steel part shall CB*/Z343 hot-dip processing , leaching layer thickness of not
less than 45um, aluminum oxide plate blasting quality
2.
flush
test requiment: Nozzle diameter greater than 12.5mm, flushing distance: 1.5m
,nozzle water pressure:0.25 Mpa
3.
In
according to all other requirement refer ISO3903: 1993 shipbuilding and marine
sturctures, marine ordinary recangluar window standard
4.
After
the steel main frame sand-blasting spit twice primer, color is gray
Marine
Porthole
Install
in the side plates, the superstructure deck and outdoor wall , on the hull of
the ship, can ensure the hull tightness, Round window with anti storm
performance.
Ship's portholes reason are designed into
round, according to the principle of mechanics, circular than other shapes more
under pressure, shear stress. The
installation position of porthole according to insubmersibility of ship.
Classify into heavy and light type. Heavy
porthole inboard hinge cover anti wave porthole. Deadlights side with rubber
seals, tightly pressed by the bolt to keep watertight. Light portholes are
generally not associated with deadlights. In the spaces below the freeboard
deck or enclosed superstructure premises portholes were all severe side scuttle.
Portholes fixed type and movable type, the
former can not be opened, which can be opened, at watertight bearing capacity
of heavy 20Pa, ordinary type 50~100Pa, light (20Pa below). Heavy movable
portholes stone in a watertight region in the window, cap with a riot, such a
window in stormy weather cannot keep lighting. For circular porthole,
specifications with transparent glass diameter usually & Oslash; 200mm,
& Oslash 250mm, 300mm & Oslash;, & Oslash 350mm, & Oslash 400mm
several, depending on the vessel size (rib spacing selection. As the exit must
be more than 350mm.
1.
side
scuttle part surface should level bright and clean,surface its rough degrees of
Ra should be greater than 12.5um,mould forging surface can’t have
crackle,divide into layer,burn etc and forge the defect,casting surface
2.
there
can’t be the defects of sand holes,air vent,crackle,loose and intensity of
other influence
3.
The
windowpane of side ship must adopt the safety glass that GB11946,there should
be certificate of competency.Surface of glass both side should be stuck and can
shell the membrance.
4.
side
scuttle steel part should soak the zinc to deal with according to GB/TZ343 heat
it is not smaller than 45um to soak one layer of thickness,the aluminium part
should oxidize dealing with according to GB/TZ92,the surface is unglazed and
silivery white
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