Light cast iron manhole covers

Product Description:

Ductile iron QT500 manhole covers

1. Material: QT500-7

Raw material: Q12 class brand

2. The base diameter: 800 mm

3. The base height: 65 mm

4. The cover plate diameter: 700 mm

5. Net openings: 670 mm

6. 42 kg weight:

7. Pressure load: 125 kn B125 12.5 tons

8. Surface treatment: black bituminous paint

9. Chemical and physical composition

10. The quality management system certification: ISO9001:2008

11. I plant products are 90% export, quality guaranteed, smooth surface, the pressure up to standard.

QT500-7

Of the goods

The base diameter

Cover plate diameter

Net openings

highly

The weight of the

Pressure load

The material

Ductile iron manhole cover

Φ 800 mm

Φ 700 mm

Φ 670 mm

60 mm

42 kg

10 tons

QT500-7

Ductile iron manhole cover

Φ 900 mm

Φ 700 mm

Φ 670 mm

75 mm

49 kg

25 tons

QT500-7

Ductile iron manhole cover

Φ 900 mm

Φ 700 mm

Φ 670 mm

75 mm

59 kg

35 tons

QT500-7

Physical property

TENSILE STRENGTHN/m ㎡

YIELD STRENGTH

ELONGATION

HARDNESS

500

320

7%

170-170.

brand

Chemical composition (%)

C

SI

Mn

P

s.

MG

Re

QT500-7

3.6 to 3.8

2.5 to 2.9

< = 0.60

< = 0.08

< = 0.025

0.03 to 0.05

0.03 to 0.05