1. ISO 9001:2008 certified.
2. Advanced equipment and over 15 years of experience in the industry.
3. Competitive pricing, precision manufacturing, and reliable quality control that you can trust.
4. Process: Each part undergoes 100% testing and trial before shipment to ensure quality and performance.
5. Strong production capacity and timely delivery.
Product Details:
1. Material & Standards: Grey iron, ductile iron, malleable iron, carbon steel, alloy steel (including high manganese and high chromium), stainless steel, aluminum alloys, copper alloys;
2. Molding Processes: Green sand, resin sand, waterglass sand, lost wax/silicon sol, or die casting.
3. Melting Equipment: Cupola furnace, medium frequency induction electric furnace, or electric arc furnace.
4. Casting Inspection Facilities: Direct-reading spectrometer, metallographic analysis, magnetic particle inspection, ultrasonic inspection, X-ray inspection, mechanical properties inspection.
5. Heat Treatment Facilities: Aging oven, electric furnace, normalizing, quenching, and tempering equipment.
6. Surface Treatment: Shot blasting, polishing, chrome plating, zinc plating, powder coating, etc.
7. Machining Equipment: CNC centers, NC lathes, NC milling machines, NC boring machines, drilling machines, and other common machines.
8. Inspection Facilities: CNC 3D inspection facilities and others.
9. Industrial Categories: Tractor, heavy-duty truck industry, car industry, farm machinery, construction engineering machine industry, electricity power industry, elevator industry, valve industry, general machine industry, and others.
10. Part Unit Weight Range: For grey iron casting: up to 15,000 kg; for ductile iron casting: up to 4,000 kg; for high manganese steel casting: up to 5,000 kg; for carbon steel & alloy steel casting: up to 10,000 kg; for aluminum/copper alloy die casting: from 8g to 12kg; for investment/lost wax casting: up to 80kg.
11. Representative Products: Machine bed, machine table, bearing stand, housing, casing, cover, valve body, pump body, big ring gear, big pulley, big sheave, bolster, frame, rear frame, front frame, engine block, mill-ball, hammer, jaw plate, bucket tooth, front idler, excavator sprocket, link rod, Bucket link rod, barre liner, grate plate, top grate, open grate, front wall and rack, etc.
Company Profile:
We specialize in casting parts, machined parts, and a wide range of products. Our Import and Export Department has extensive experience in foreign trade, with products mainly exported to the United States, Denmark, Italy, Russia, Australia, and other countries.
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| Item: B125/C250/D400 Ductile Iron Manhole Cover by Sand Casting |
| Material: Cast Gray Iron, Ductile Iron |
| Shape: Round, Square, Rectangle, Triangle |
| Process: Drawing - Mould Making - Raw Casting - Sand Blasting - Rough Machining - Surface Treatment - Product Inspection |
| Size Range: 200mm to 1200mm, Weight Range: 7kg to 154kg |
| Surface Treatment: Spray Coated, Epoxy, Painted, Enamel, etc. |
| Certificate: ISO 9001:2000, SGS |
| Class: A15, B125, C250, D400, E600, F900 |
| Name | Manhole Cover |
| Material | Ductile Iron GGG50/7, Gray Iron |
| Standard | EN124/1433/1563 |
| Class | A15, B125, C250, D400, E600, F900 |
| Shape | Round |
| Size | 600x600, 840x840, 850x850 or as per customer's drawing |
| Paint | Bituminous Black |
| Advantage | Non-slip and safe, easy installation, easy to clean, excellent anti-pressure, and attractive appearance |
| Molding | DISA Line |
| Process | Drawing - Mould Making - Raw Casting - Sand Blasting - Rough Machining - Surface Treatment - Product Inspection |
| Application | Footway, pedestrians, car parks, aircraft pavements |
| Certificate | BSI, ISO 9001:2000 |
| 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, auto parts |
| Other Information | We can cast and process any type of iron casting product according to customers' drawings or samples |
1. Q: Why choose Shengao product?
A: We have our own plant—Weifang Shengao Machinery Co., Ltd. Therefore, we can guarantee the quality of every product and offer competitive prices.
2. Q: Do you provide OEM Service?
A: Yes, we provide OEM service.
3. Q: Do you provide customized sand casting products?
A: Yes. Customers provide us with drawings and specifications, and we will manufacture accordingly.
4. Q: What is your payment term?
A: We offer various payment terms such as L/C, T/T, PayPal, Escrow, etc.
Our main products: manhole; manhole cover; drain covers; cover drive; man hole; sewer manhole; manhole frame; manhole covers for sale; recessed manhole covers; cast iron manhole covers; manhole covers round; manhole cover manufacturers; double sealed manhole cover; sewer cover; cast iron drain cover; heavy duty manhole covers; round manhole covers; metal drain covers; sealed manhole covers; manhole cover and frame; grate covers; round drain covers; sewer manhole cover; manhole cover suppliers; drain covers grates; sewer covers drain covers; iron manhole cover; recessed drain cover; manway cover; metal manhole cover; manhole cover frame
B125/C250/D400 Ductile Iron Manhole Cover by Sand Casting
Quality First, Price Best, Service Foremost!
We assure you of our best services at all times!
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