Welcome to Jinlong Foundry Group, we are a reputable manufacturer of top quality cast iron products.

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rectangle multi-lid manhole cover

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Quick details

· Shape: Square

· Material: Ductile Iron GJS500-7

· Duty Class: EN124 B125

· Frame Style: Bottom Flange

· Gasket Material: Neoprene

· Lock Material: SS304

· Coating: Black Bitumen

· Standard: EN124-2015

· Surface Pattern: Customized

· Surface text: Customized


Main Test

Anti-breaking strength (Mpa)>14

Impact toughness resistance (kg/cm2)>95

Tensile strength (Mpa)>10

Compressive strength (Mpa)>30

Modulus of elasticity (kg/cm2)>1.4*104

Cold-hot resistance measure<0.4

Water-absorption<1.0

Product Benefits:

1.No inherent scrap value thus reducing risk of theft.

2.Moderate weight and easy installation.

3.Can be used in -30℃ to 70 ℃degrees environment.

4.30 years of service life.

5.Tested by national security agencies. Compressive, bending and impact resistant. Heat, cold, acid, etc.

6.Corrosion resistance, meet the needs of environmental protection, and reduce the exploitation of mining resources; beautify the city, classify the coloring, and enhance the taste of the city.


We supply rectangle multi-lid manhole cover

Established in 1993, located in Changsha China, we devoted ourselves to casting industry for many years,has been exporting to Europe and Australia since 2001.

We are expecting become your long team partner, OEM & OED is welcomed.


MaterialDuctile cast iron, grey cast iron, steel
SpecificationA15,B125,C250,D400,E600,F900
ProcessSand casting, Shell core casting
ApplicationSewer, Electronic, Sanitary, telecommunications, sewage, drainage, water, stormwater, fire protection & etc.
Casting Tolerance Min.0.1mm
Machining Tolerance Min.0.02mm
Surface TreatmentBlack Bitumen, Spraying Painting, galvanization,
Unit weight0.5kg~450kg
ApplicationSewer, Electronic, Sanitary, telecommunications, sewage, drainage, water, storm water, fire protection & etc.
Technical Supportexperienced design team
StandardEN124, AS3996, ISO, ASTM,JIS, ANSI, DIN, BS,
CertificationISO9001:2008
FeatureSingle Seal, Double Seal, Bolt Hinge, Removable Hinge, Lock Device, Spring Bar, Auto-locking Device, Safety-Design, Solid, Vent Cover, Lifting Key Hole, Rubber/PE Gasket, GRP Plate, Cut-Corner Design, single seal, double seal, hinge type, ventilated, watertight, airtight, and anti-theft & etc.


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