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

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infill 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


Quality Assurance

Foundry is equipped with in-house pattern development shop with VMC for quick turn around time for our valued clients.

Chemical and Metallurgy Lab :Spectrometer from Foundry Master, UTM, Hardness Testing Equipment

Sand Lab: Core Hardness Testers, Sand Testing Equipment and Green sand hardness tester, Sand Siever, Sand Rammer, Sand Washer, Sand Splitter


Proven Designs

Castking's proven range of manhole covers and gully grates are recognized worldwide for quality design and manufacture. Castking's commitment to continuous product development and design development is reflected in the latest innovative additions to the already proven and established product range.


Full Load Class Range: Castking's manhole covers and gully grates castings are available to suit most applications - from light duty domestic covers to heavy duty, high performance Class D loading castings suited to the most demanding road conditions.


Solution for every casting needs right from simple to complex object.

Benchmark for technology and innovation in casting industry.

A globally competitive and environmentally responsible casting unit.

The preferred supplier of engineered, net-shape metal components.


We supply infill 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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