Ductile Iron Manhole Covers Frames and Gratings
                     Tru orm 
ISO 9001 Certified Company
www.truformtechnoproducts.com
Tru orm 
Truform is Strategically located at Nagpur in central India . We cater to the needs 
of elite clients across India, supported by a team committed to provide the best 
service apart from the best product in the market regardless of the quantum, size 
& volume of requirement . 
 The Keen, Constant efforts made by guidance of our team of technician of the 
field, have come to be fruitful to make success of the products of D.I.Manhole 
Covers, Frames & Grating Manufactured. As we are bound to do so for the sake of 
our reputation, we always maintain a vigorous check at every step during the 
manufacturing process for ensuring each product is up to the mark, both quality 
and durability wise.
There lies the secret of the success and popularity, which we have arrived at .
We believe Customer focus is key to our business success
BENEFITS OF USING DUCTILE IRON
Ductile iron behaves elastically over a considerable stress range in both tension 
and compression. these attributes are caused by the spheroidal shaping of 
graphite in the material. when stressed, the material is elastically deformed but 
doesn’t break. the spheroidal structure also provides a higher strength-to-weight 
ratio compared with the properties inherent with grey iron manufacture
 The Benefits Of Ductile Iron:
 ● Higher resistance and durability
 ● Ergonomic handling caused by less weight.  
Physical & Mechanical Properties Of Foundry Grade Ductile Iron
PROPERTIES CAST IRON DUCTILE IRON
Tensile Strength Mpa Max 300 Mpa Max 900 Mpa
Hardness Below 230 BHN Below 230 BHN
Elongaon % Nil Min 5%
Bending strength kg/mm² Over 34 Over 50
Elasc Co Effiency Kg/mm² 1.2X10⁴ 1.7X10⁴
Impact value kg,M/cm² Izod Below 0.5 Charpy over 0.713
Thermal expansion coefficient 1.0X10-⁰⁵ 1.0X10-⁰⁶
Specific Gravity 7.15 7.15
Weight
Class Grade (KG)
1 300X300 A-15 LD 8
2 300X300 C-250 HD 33
3 450X450 B-125 MD 45
4 600X600 A-15 LD 40
5 600X600 B-125 MD 58
6 600X600 B-125 MD 65
7 600X600 C-250 HD 62
8 600X600 C-250 HD 90
9 600X600 D-400 EHD 105
10 750X750 B-125 MD 95
11 750X750 C-250 HD 125
12 900X900 B-125 MD 115
13 900X900 B-125 MD 125
14 900X900 C-250 HD 150
15 900X900 D-400 EHD 170
Weight
Class Grade (KG)
1 450X600 A-15 LD 30
2 450X600 B-125 MD 70
3 450X900 B-125 MD 80
4 600X900 A-15 LD 65
5 600X900 B-125 MD 105
6 450X600 C-250 HD 100
7 600X900 C-250 HD 104
8 600X900 C-250 HD 150
9 600X900 D-400 EHD 170
Weight
Class Grade (KG)
1 500 Dia A-15 LD 25
2 500 Dia B-125 MD 45
3 500 Dia C-250 HD 65
4 600 Dia A-15 LD 42
5 600 Dia B-125 MD 65
6 600 Dia C-250 HD 90
Weight
Class Grade (KG)
1 150X150 A-15 LD 10
2 300X300 A-15 LD 12
3 400X400 A-15 LD 40
4 450X450 A-15 LD 32
5 450X450 B-125 MD 56
6 450X600 B-125 MD 38
7 600X600 B-125 MD 70
8 600X600 C-250 HD 90
9 600X900 A-15 LD 70
10 600X900 C-250 HD 120
11 900X900 C-250 HD 150
ADVANTAGES
 TRUFORM ‘Ductile Iron’ Manhole Covers, Frames & Gratings As Per BS EN-124
 ● Manufactured as per BS EN-124 Standard.
 ● Safe Handling due to high strength and low weight.
 ● Open/Close keyhole for easy lifting.
 ● Frames for better security.
 ● Anti-skid elegant checker design.
 ● Heavy duty traffic load bearing
 ● Cost effective in compare to other substitutes. 
Optional Features:
 ● Locking Arrangement Available, If Required.
 ●  Customized Patterns Can Be Developed as per Requirement.
LOAD CATEGORISATION : 
Grade A15    1.5 MT (Light Duty),
Grade B125  12.5 MT (Medium Duty),
Grade C250  25.0 MT (Heavy Duty)
Grade D400  40.0 MT (Extra Heavy Duty)
VARIOUS USAGES OF MANHOLE COVERS, FRAMES & GRATINGS
Manhole tops and gully gratings are regulated by standard BS EN-124. Within areas 
subjected to Pedestrian and Vehicular traffic the standard classifies Products 
according to their installation points.  
CLASS A15 CLASS B125 CLASS C250 CLASS D400
Areas Which Can Footways, Pedestrian For Gully Tops Carriageways Of Roads For
Only Be Used By Areas, Car Parks, Installed In The Area Of All Types Of Vehicles
Pedestrians And Cyclists Car Parking Decks Kerbside Channels Of Roads
Maharashtra
Maharashtra
Tru orm 
ISO 9001 Certified Company