Products
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500x600x120 Anti -decay cast -iron round well
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500x300x50 Composite square lid manhole
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400x700x70 Composite grille
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Artistic cast iron cover with copper coating
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500x700x30 Composite high -speed cover
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700x370x60 Composite square lid of hatch
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Drainage tank
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The mesh is against the fall
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400x550x65 Composite grille
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Cast iron round lugs to order
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500x500x45 cast -iron square lid hatch
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1200x740x60 Double cast -iron square well
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520x340x200 Composite water meter
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600 × 600 composite square planter
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500x320x50 Composite mutual combuster with small teeth
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620x1000x75 Composite square lid of hatch
Here is a professional translation of the text into Russian
Title: here is a professional translation of the text into Russian
Specification: 700*800
Carry the load: A15-E600
Description of the set of text: EN124
Text description: Cast iron water-free grille made of high-strength cast iron, made of high-strength cast iron QT500-7 by casting method. Specially developed for an effective drainage. The round design (standard diameter φ600-800 mm) in combination with an optimized scheme of grates' cracks is designed for zones with high runoff: roads, areas, parks. Key functions: rapid water removal, bearing the ability under load and protection against blockages. Corresponds to the standard EN124D400 (load 40 tons), is a key component of city drainage systems.
Description
marker
I. Why choose our grille from high -strength cast iron?
“Not every cast iron is a high -strength cast iron!”
Compared to gratings made of gray cast iron (high fragility, tendency to destroy) or composite plastics (rapid aging, low bearing capacity), QT500-7, due to the combination of strength and plasticity, provides a qualitative leap in compression strength, shock viscosity and durability, reducing the total cost of the life cycle by 40%!
II. Technical characteristics
1. Material and technology
- The basis of high -strength cast iron:
- Magnesium processing/rare earth elements provides spherical distribution of graphite.
- The strength of the strength at stretching ≥420 MPa, relative lengthening ≥10%, shock viscosity (≥12 J/cm²) significantly exceeds gray cast iron.
- density of 7.3 g/cm³, has no value for remelting, natural protection against theft.
- Anti -corrosion treatment:
- triple protection: zinc spraying (layer thickness ≥80 μm) + bitumen coating + sealing pores with epoxy resin.
-resistance to salt fog ≥2000 hours (ASTM B117), compatible with pH 4-12.
2. Hydrodynamic design design
- Vorthy crossbars of the gratings: radially located arc -shaped crossbars (clearance ≤15 mm) direct the flow of water to the center, increasing the efficiency of the drain by 40% (consumption ≥45 l/s · m²).
- Optimization against blockages: a gradient step of the crossbars (8 mm along the edges → 15 mm in the center) delayed large garbage, reducing the risk of blockages.
- Self -cleaning slope: the minimum angle of inclination of the grate surface (0.5 ° –1 °) allows rainwater to wash off silt, increasing the interservice interval by 50%.
III. Key advantages and features
① supervision, safety and stability
-Material: high-strength cast iron QT500-7, strength of ≥500 MPa, lengthening ≥7%, excellent shock viscosity.
- Load class: corresponds to the D400 class (load 40 tons), it was tested under heavy equipment.
- Design: a reinforcing mesh on the back of the side + anti -slip pattern (toothed/wave), friction coefficient in rain> 0.8.
② Highly effective drainage
- The area of open holes ≥23%: the optimized distribution of holes prevents the formation of a puddle.
- gratings ≤25 mm lattice: effectively delayed garbage, simplifies service.
③ Durable anti -corrosion protection
- coating: hot zinc (≥80 μm) + bitumen coating.
-resistance to atmospheric influences: stable from -30 ° C to +150 ° C; > 1000 hours of testing with salt fog without corrosion.
- Settlement service life: ≥30 years (under normal conditions).
④ Safety and ergonomics
- Protection against failing: optional internal stainless steel grid. steel 304 (load ≥100 kg).
- Anti -Vandal fixation: hidden loops/bolt locks reduce the risk of theft by 80%.
- Noise reduction: rubber gaskets eliminate the noise from the passage of transport.
IV. Areas of application
- Municipal construction: city highways, bicycle paths, drainage systems of green zones.
- Public objects: airports, ports, stations, large areas.
- Residential/commercial zones: LCD roads, entrances to parking lots, walking paths.
- Promzones: logistics parks, factory territories, warehouses.
V. Standards and certification
- International: EN124 D400 (load), ISO1083 (material).
- Chinese:
-GB/T 23858-2009 Lukes of viewing wells.
-CJ/T 327-2010 grilles for discharge of flip water.
- Certificates:
- SGS report on testing with salt fog (> 3000 hours).
- Recommended by the Association of Municipal Construction of China.
Resume
The cast-iron round water-free grille of high-strength cast iron changes the approach to urban drainage thanks to military bearing capacity, a 30-year-old unconscious service life and efficient management of storm waters. Key advantages:
1. The revolution in the drainage system: V-shaped direction of stream + self-cleaning exclude flooding with extreme sediments.
2. King of loads: a bearing capacity of 40 tons exceeds analogues.
3. Economic life cycle: 50% lower than service costs; The service life is 3 times more than gray cast iron.
This is an indispensable solution for protection against floods, transport hubs and high load zones, especially in conditions requiring uncompromising reliability and durability.
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