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JIS F 2304 Type C Sunk Multi Bolt Oval Hatch Cover
Description:
JIS F 2304 Type C is sunk manhole hatch cover. It is oval shape with multi bolts. Main material is mild steel, bolt and nut has alternative choice for stainless steel, bronze, brass. Our manhole ring is cut as whole piece without butt weld several pieces together. This workmanship makes sure the ring has smooth top surface to keep good watertight and oiltight. It is used on water ballast tank and oil tank with different kinds of gasket material. The sunk manhole cover makes sure the deck or the tank has no obstacles and avoid the damage of the manhole stud during cargo discharging.
Main Technical Specification:
Main Technical Parameter:
Nominal No. | Opening | Gasket | Cover | Bolt Quantity | Reference | |||||
L | B | L1 | B1 | L2 | B2 | L3 | B3 | weight (kg) | ||
4 535 | 450 | 350 | 580 | 480 | 510 | 410 | 570 | 470 | 20 | 56.3 |
5 040 | 500 | 400 | 630 | 530 | 560 | 460 | 620 | 520 | 22 | 64.9 |
6040 | 600 | 400 | 730 | 530 | 660 | 460 | 720 | 520 | 24 | 75.3 |
6045 | 600 | 450 | 730 | 580 | 660 | 510 | 720 | 570 | 24 | 79.1 |
Drawing of JIS F 2304 Type C Sunk Multi Bolt Oval Manhole Hatch Cover Marine Outfitting