Product information:Manhole covers are manufactured for road construction, natural gas, water supply and drainage, telecommunications. Manhole covers and gratings should be smooth, no blisters, holes, distortion or any other defects. Size: 500mm*500mm,600mm*600mm,700mm*700mm,800mm*800mm, 850mm*850mmand so on.Many size can be choose,or according to customer's drawing or requirements. Material Ductile Iron GGG500,or according to customers requirement Designs EN124 A15, B125, C250, D400, E600 and F900 or As per customers' drawings or samples Processes: A) Moulding boards B) Green sand with hand moulding Coating Cold applied black bitumen Or without Coating or as per customers' requirement Inspection: Third party inspection available upon request
Product Benefits of ductile iron manhole cover
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.
Standards and features of ductile iron manhole cover 1.high strength. Tensile strength σs≥420MPa, yield strength σs≥300MPa, same as low carbon steel, three times that of gray iron 2.Good toughness. The impact value is similar to that of medium carbon steel, which is more than 10 times that of gray iron material. 3.Good plasticity. The elongation is as large as 7%, which is similar to high carbon steel, while the gray iron steel has an elongation of zero.
standards and features of ductile iron manhole cover
4.Strong corrosion resistance. In the water spray corrosion test, the corrosion amount in 90 days is only one tenth of that of the steel pipe, which is one tenth of that of the gray iron pipe. The service life is twice that of gray cast iron, which is 5 times that of ordinary steel pipe.
Packing & Delivery
manhole cover :wooden pallet and plastic film.
Q: Are you trading company or manufacturer ?
A: We are factory,We can control quantity and quality better
Q: Can products be customized?
A: Yes, please provide samples or drawings.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.If you have another question, pls feel free to contact us as below:
Q:Is the product support customized?
A:Please provide drawings or samples, we will give you an offer.