JIS F 2304 Type A Raised Multi Bolt Oval Manhole

Description:

JIS F 2304 Type A is raised 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. The hight of the coaming can be customized. 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.

Main Technical Specification:

1. Standard: JIS F 2304-1989
2. Material: Mild Steel, Stainless Steel,
3. Weight: 52.9 to 73.1kg;
4. Test: Hydraulic Pressure Test, Air Test
5. Dimension: As Standard or Customized, As client’s drawing,
6. Application Type: Water-tight, Gas Tight, Oil Tight,
7. Gasket Type: Neoprene, Buna A, Customized;
8. Bolt Material: Stainless Steel, Bronze, Brass;
9. Coaming Height: 100mm, Customized
10. Type: A, raised coaming with multi bolt cover;
11. Surface Treatment: Sandblasting to S2.5 + one layer of epoxy shop primer, Polished, Galvanized, Customized surface treatment available.
12. Classification Certificates: CCS, NK, BV, ABS, DNV-GL, LR, KR, IRS, RS, RINA. Mill Certificate.

Main Technical Parameter:

Drawing of JIS F 2304 Type A Raised Multi Bolt Oval Manhole