JIS F 2304 Type B Flush Multi Bolt Oval Manhole

Description:

JIS F 2304 Type B is flush 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.

Main Technical Specification:

1. Standard: JIS F 2304-1989
2. Type: B, flush pad multi bolt cover;
3. Material: Mild Steel, Stainless Steel,
4. Weight: 52.8 to 59.6kg;
5. Test: Hydraulic Pressure Test,
6. Dimension: As Standard or Customized as inquiry;
7. Application Type: Water-tight, Gas Tight, Oil Tight,
8. Gasket Type: Neoprene, Buna A, Customized;
9. Bolt Material: Stainless Steel, Bronze, Brass;
10. Surface Treatment: Sandblasting to S2.5 + one layer of epoxy shop primer, Polished, Galvanized, Customized surface treatment available.
11. Classification Certificates: CCS, NK, BV, ABS, DNV, LR, KR, IRS, RS, RINA. Mill Certificate.

Main Technical Parameter:

Drawing of JIS F 2304 Type B Flush Multi Bolt Oval Manhole Marine Outfitting

Founded in the 1990s, Zhongyuan Ship Machinery Manufacture (Group) Co., Ltd. comprises four factories and one exporting company,
employing over 300 personnel with 20 experienced technicians & engineers. Our export trade company facilitates seamless delivery of
cargo worldwide.

Our factories are certified with ISO 9001, OHSAS 18001, ISO 14001, and ISO 45001, as well as possessing Type Approval certificates
from DNV, LR, BV, and ABS. Additionally, we hold Works Approval certificates from ABS, DNV, LR, and BV, various class approved
WPS & qualified welders. All our products are eligible for certification from IACS classification societies such as DNV, ABS, LR, BV,
CCS, RINA, KR, NK, IRS, and RMRS. Our factories have secured two national patents, one for a steel plate rolling machine and two
utility model patents.

We manufacture Deck Equipment & Machinery, Mooring & Towing Equipment, Deck Outfitting, Hydraulic Cylinder, Hydraulic Power
Unit, Shaft, Rudder Stock, Shaft and Rudder system, Marine Hardware, Lifting & Lashing Equipment, Hoisting & Rigging.

We distribute Lifeboat, Rescue Boat, Boat Launching Appliance and Davit, Life-saving Equipment and Facilities, Fire-fighting
equipment, Rubber Fender, Rubber Packing, Pumps, Valves, Pipe Fittings, Multi-core Pipes and accessories, Steel Wire Rope,
Mooring Rope, Rope Nets, Anchors & Anchor Chains, Various Chains;

We pride ourselves on manufacturing & delivering reliable, high-quality products at competitive prices to our esteemed clients.

Our major equipment and facilities include various CNC machining centers with a range of CNC machine tools & CNC cutting
machines, boring and milling machines, hydraulic press machinery, plate rolling machines, welding robots, welding equipment, and
shot blasting machines, dust free paint workshop, etc.