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Our manhole covers are designed to meet the highest standards of durability and functionality. Here are some key features:
* Material: Ductile Iron, Carbon Steel, Grey Iron, Stainless Steel, Aluminum, Brass, etc.
* Available casting methods: Sand casting and investment casting (precision casting).
* CAD software used for design: PRO/E, AutoCAD, UG, SolidWorks, and more.
* Additional machining: Turning, milling, grinding, drilling, reaming, threading.
* Advanced equipment: CNC centers, lathes, and other precision machines.
* Surface finishing options: Shot blasting, chromate plating, powder coating, anodizing.
* OEM/ODM services available for a wide range of industrial parts.
* Manufacturing process: From CAD design to final inspection and packaging.
* Custom manufacturing based on customer drawings, specifications, or samples.
* Monthly casting capacity: 500 tons.
Ductile Iron Manhole Covers / Manhole Cover
Cast Iron Manhole Cover
manhole, manhole covers, sewer covers, metal manhole cover, sealed manhole covers, drain covers, circular manhole, manhole japan
We can produce all types of manhole covers according to your drawings or samples. Our products are widely used in roads, footpaths, parking areas, and more. We ensure high-quality and reliable performance for all our customers.
Product Details:
1. Materials & Standards: Grey iron, ductile iron, malleable iron, carbon steel, alloy steel, stainless steel, aluminum, copper alloys.
2. Molding Processes: Green sand, resin sand, waterglass sand, lost wax/silicon sol, die casting.
3. Melting Facilities: Cupola furnace, medium frequency induction furnace, electric arc furnace.
4. Casting Inspection: Direct-reading spectrometer, metallographic analysis, magnetic particle testing, ultrasonic testing, X-ray testing, mechanical properties testing.
5. Heat Treatment: Aging oven, electric furnace, normalizing, quenching, tempering equipment.
6. Surface Treatment: Shot blasting, polishing, chrome plating, zinc plating, powder coating, etc.
7. Machining Equipment: CNC centers, NC lathes, milling machines, boring machines, drilling machines.
8. Inspection Equipment: CNC 3D inspection systems and others.
9. Industrial Applications: Tractors, heavy trucks, cars, farm machinery, construction equipment, power industry, elevators, valves, general machinery, and more.
10. Part Weight Range:
- Grey Iron: up to 15,000 kg
- Ductile Iron: up to 4,000 kg
- High Manganese Steel: up to 5,000 kg
- Carbon Steel & Alloy Steel: up to 10,000 kg
- Aluminum/Copper Alloy Die Casting: from 8g to 12kg
- Investment/lost wax casting: up to 80kg
11. Representative Products: Machine beds, tables, bearing stands, housings, casings, covers, valve bodies, pump bodies, large ring gears, pulleys, sheaves, bolsters, frames, rear frames, front frames, engine blocks, mill balls, hammers, jaw plates, bucket teeth, front idlers, excavator sprockets, link rods, bucket link rods, barrel liners, grate plates, top grates, open grates, front walls, and racks.
OEM and ODM services are fully available for custom manhole covers. If you need tailored solutions, feel free to contact us. We provide quotations within 24 hours.
If you have any questions, don't hesitate to reach out. We're here to help!
Name
Ductile Iron Manhole Cover in Cast & Forged
Material
Ductile Iron GGG50/7, Gray Iron
Standard
EN124/1433/1563
Class
A15, B125, C250, D400, E600, F900
Shape
Round
Size
600*600, 840*840, 850*850 or as per customer drawing
Paint
Bituminous Black
Advantage
Non-slip, safe, easy installation, easy cleaning, excellent pressure resistance, attractive appearance
Molding
DISA Line
Process
Drawing → Mold Making → Raw Casting → Sand Blasting → Rough Machining → Surface Treatment → Product Inspection
Application
Footways, pedestrian paths, car parks, airport pavements
Certificate
BSI, ISO9001:2000
Strict Quality Control
Tensile Strength: 500 MPa | Yield Stress: 320 MPa | Elongation Rate: 7% | Hardness: HBS 170-230
Main Products
Manhole Covers and Grates, Furnaces, Bases, Machinery Parts, Cookers, Valve Bodies, Pipe Fittings, Automotive Parts
Other Information
We can cast and process any type of iron casting product according to customer drawings or samples
Order No.
Inner Dia
Grating
Outer Dia
Height
Weight (kg)
Pressure (kN)
F0536-1
252 x 252
326 x 326
360 x 360
36
13.5
C250
F0536-2
350 x 350
400 x 400
470 x 470
40
20
C250
F0536-3
450 x 450
500 x 500
580 x 580
50
32
C250
F0536-4
550 x 550
600 x 600
680 x 680
50
39
C250
F0536-5
350 x 350
400 x 400
500 x 500
100
36.2
D400
F0536-6
450 x 450
500 x 500
600 x 600
100
49
D400
F0536-7
560 x 560
600 x 600
700 x 700
100
62
D400
Tensile Strength
560 MPa
Yield Stress
340 MPa
Elongation Rate
7.5%
Hardness
210 HBS
Material
GJS500-7 (GGG50)
Standard
EN 124
1. Q: Why choose Shengao products?
A: We have our own factory—Weifang Shengao Machinery Co., Ltd. This ensures quality control and competitive pricing for every product.
2. Q: Do you offer OEM service?
A: Yes, we do. We can customize products based on your designs and specifications.
3. Q: Can you produce custom manhole covers?
A: Absolutely. Just send us your drawings or samples, and we’ll manufacture accordingly.
4. Q: What payment terms do you accept?
A: We support various payment methods such as L/C, T/T, PayPal, Escrow, and more.
En124 Lockable Ductile Iron Access Manhole Covers in Cast & Forged
Model NO.: As customer request
Process: Sand Casting + Machining
Raw Material: Ductile Iron, Cast Iron, Qt500
Casting Tolerance: CT 7 ~ CT 8
Surface Finish: Ra 12.5
Dimensions: as Per Drawing
Surface: Polishing, Anodising, Powder Coating
Type: Manhole Cover
Application: Road
Metal Type: Cast Iron
Frame Finishing: Powder Coated
Feature: Anti UV, Eco Friendly, Waterproof, Anti-Corrosive, Easily Assembled
Trademark: Shengao
Transport Package: Pallet, Iron Frame, Flywood Box.
Specification: SGS, ISO9001: 2008, DIN, ASTM, GB, EN124, CE
Origin: Weifang City, Shandong Province
HS Code: 7325109000
EN124 Lockable Ductile Iron Access Manhole Covers in Cast & Forged