GGG50 Ductile Iron Round Manhole Cover
Production information
Ductile iron manhole cover is made from spheroidal graphite cast iron by machining hand
moulding, solid top, recessed,double triangular, single seal or
double seal, square or rectangular or round,with or without hinge.
Very good quality, smooth and free from sand holes, blow holes,
distortion or any other defects. Loading capacity is 40 tons. The
normal coating is black bitumen 30 microns thickness, also can make
the epoxy coating according to the customer's demand.
Round manhole covers: Expertly designed for a variety of
environments, our circular manhole covers effortlessly blend into
city streets, residential walkways, lush green areas, and numerous
other locations. These robust covers can be accurately personalized
with anti-slip patterns and custom logo designs to meet your
requirements. Enhance safety and functionality with added options
like locks, advanced smart technology, and a range of tailored
accessories.
Production information
| specification(mm) | altitude(mm) | weight(kg) | model |
| 400X500 | 40 | 14 | D400 |
| 500X600 | 40 | 20 | D400 |
| 600X700 | 35 | 14 | B125 |
| 700X800 | 50 | 20 | B125 |
| 700X900 | 100 | 51 | D400 |
| 800X900 | 50 | 35 | C250 |
Manufacturing Process
Material Preparation: High-quality pig iron and scrap iron are
melted together, with magnesium added to create a ductile iron
alloy.
Casting: The molten iron is poured into molds to form the basic
shape of the manhole cover. Sand casting is a common method due to
its precision and efficiency.
Heat Treatment: The cast pieces are treated with heat to improve
strength and flexibility.
Surface Coating: Anti-corrosive coatings are applied to ensure
longevity in various environments.
Quality Control: Each cover undergoes rigorous testing for
load-bearing capacity, tensile strength, and dimensional accuracy.
GROUP PROFILE
SND has been producing and selling metal goods for about 20
years.By using manufacturing techniques including sand casting,
lost wax casting, lost foam casting, and precision machining, the
company has been supplying goods made of materials like cast iron,
steel, stainless steel, aluminum, etc. Additionally offered are
surface finishing and assembly services.
Our company has successfully created products in a variety of
industries, including automotive, rail transportation, agricultural
machinery, chemical, energy, electricity, water, air compressor,
and construction, thanks to our consistent efforts over the past
few years.
Our factories' ISO9001-accredited quality control systems guarantee
a consistent and dependable quality for each and every component.
Spectrometer, ultrasonic, magnetic, permeability, elongation,
tensile/yield strength, and other inspections are carried out as
part of routine production procedures.
