OEM/Customized Cast Iron Hinged/Sealed Manhole Cover for Grating/Drainage (B125/C250/D400)

Product Details:
1. Materials & Standards: Grey iron, ductile iron, malleable iron, carbon steel, alloy steel (high manganese, high chromium), stainless steel, aluminum alloy, copper alloy;
2. Molding Process: Green sand, resin sand, waterglass sand, lost wax/silicon sol, or die casting.
3. Melting Facilities: Cupola furnace, medium frequency induction furnace, or electric arc furnace.
4. Casting Inspection: Direct reading spectrometer, metallographic analysis, magnetic particle inspection, ultrasonic testing, X-ray inspection, mechanical property testing.
5. Heat Treatment: 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 common machines.
8. Inspection Equipment: CNC 3D inspection facilities and more.
9. Industrial Categories: Tractor, heavy truck industry, car industry, farm machinery, construction machinery, power industry, elevator industry, valve industry, general machine industry, and more.
10. 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, barrel liner, grate plate, top grate, open grate, front wall, rack, etc.



1) Specifications
1: Specialized in producing various metal parts and mold parts, CNC machining, metal stamping, forging, and casting.
2: All international standard materials available, such as carbon steel, alloy steel, stainless steel, etc.
3: A wide range of surface finish options available, including powder coating, hard anodizing, zinc plating, painting, oxidation, blasting, etc.
4: We have good cooperation with other factories, making full use of outsourcing for heat treatment, large boring machines, etc., allowing us to handle large orders.
5: Sample is acceptable for confirmation before mass production.
6: Raw material checked before mass production.
7: Technicians self-check during production, and engineers do spot checks to ensure quality.
8: QC inspects after products are completed.
9: Choose the best packaging method to prevent damage during transportation.
10: Trained salesmen check before shipping.
11: Main equipment: CNC lathe, automatic lathe, hand lathe grinder, thread rolling machine, tapping drilling machine, boring machine, and CNC machining center.
12: Advanced measuring and testing equipment: Projector, roughness tester, hardness tester, concentricity tester, etc.
13: Offer total solution for customer ideas with in-house production/assembly and outsourcing program.
14: Provide engineering consultation for design improvement and cost saving.
15: Inspection reports and material test certificates available upon request.
16: IPQC inspects at each step; 100% inspection before shipment using micrometer, height gauge, projector, CMM, etc.
17: Meet DIN, JIS, ASTM, AISI, BS, GB standards.
18: We believe Honesty is Time, Conscience is Quality.
Details:
A. Item: Manhole Cover
B. Drawing: As your requirement
C. Surface: Blackening, galvanizing, plating, painting, etc.
D. Material: QT, iron, steel
E. Product: Manhole cover, pipe fitting, flange, machine parts, pump parts, etc.
F. Technology: Sand casting
G. Advantages: On-time delivery, based on material requirements.
H. Packing: Wooden case or as your requirement.
I. Delivery: Within 20 days after receiving last confirmation.


2) Manufacturing Process
1. Sample or drawing provided by customer
2. Tooling proposal and discussion
3. 3D tooling design
4. Tooling production
5. Rough parts manufacturing
6. CNC machining
7. Fitting and finishing
8. Tooling measurement and checking
9. Assembly
10. Trial production
11. Correction
12. Final trial
13. Sample inspection
14. Sample approval by customer
15. Tooling approval
16. Ductile iron sand casting



3) Company Profile:
We mainly produce casting parts, machined parts, and other products. Our Import and Export Department has many years of experience in foreign trade, and our products are mainly exported to the United States, Denmark, Italy, Russia, Australia, etc.

4) Typical Products:
Scaffold fittings, template parts, railway fittings, ring flange, electromagnetic steel cover, piston, pressure plate, center plate, wear plate, cylinder, impeller, disc, etc.
5) Quality Control




Quality First, Price Best, Service Foremost!
We assure you of our best services at all times!

Manhole Cover
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We can produce all kinds of manhole covers based on customer drawings or samples.
OEM and ODM are welcomed.

Relay Valve

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SHANGQIU FLAT WORLD MACHINERY CO.,LTD , https://www.sqflatworldmachinery.com