rostfrei make zincalume silos - future of grain storage

“REDEFINING

GRAIN SILO

INDUSTRY”

ROSTFREI STEELS PVT. LTD.PLOT NO. 211, 2ND FLOOR OKHLA INDUSTRIAL ESTATE,

PHASE – III, NEW DELHI – 110020 (INDIA)

PHONE : +91-7290034270; [email protected]

Zincalume Steel SilosThe Future of Grain Silo Industry”

ZINCALUME STEEL SILOS

ROSTFREI STEELS PVT. LTD.PLOT NO. 211, 2ND FLOOR OKHLA INDUSTRIAL ESTATE,

PHASE – III, NEW DELHI – 110020 (INDIA)

PHONE : +91-7290034270; [email protected]

WHY STILL BUYING GI SILO??

SERVICE L IFE OF GI S ILOS WITH Z INCALUME STEEL S ILOS

G115

ZINCALUME STEEL SERVICE LIFE IS 30 TO 40 YEARS

GI Std. Oz/ft2 g/m2

Service

Life in

India

G40 0.4 122 7-9 Yrs

G60 0.6 183 10-12 Yrs

G90 0.9 275 15-18 Yrs

G115 1.15 351 20-23 Yrs

G140 1.4 427 24-27 Yrs

G165 1.65 504 28-32 Yrs

G210 2.1 641 36-41 Yrs

Rostfrei Pioneered Zincalume Steel Silos that fulfills all Best Silo’s Criteria

Paddy SILOS in PUNJAB, 2000 MT X 2

Nos

Besides Good condit ion monitor ing &control l ing equipment a Good Grain Si lomust have: -

1. Good Corrosion Resistant propertiesso as to withstand corrosion due tohigh moisture grains

2. Better Salt Spray Test Results

3. Excel lent Thermal Reflectivity ofSolar Heat to reduce HeatRadiations inside Silo

4. Long lasting lustre – Looks new forlonger time

5. Durabil i ty ; as it is a long terminvestment

6. Maintains Grain Quality and assurescost savings

7. Suitable for Tropical and Sub-Tropical Cl imates

COATED METAL COATING DESCRIPTION

Galvanised Steel 99.7% Zinc + 0.2% Aluminum Coating

Galfan95% Zinc + 5% Aluminum Coating

Magnelis

93.5% Zinc + 3.5% Aluminum + 3% Manganese

Coating

Zincalume 43.5% Zinc + 55% Aluminum + 1.5% Silicon Coating

MATERIAL OF CONSTRUCTION OF

GRAIN SILO

GALFAN, MAGNELIS, ZINCALUME ARE FAR BETTER MATERIALS

THAN GI AS THEY LAST MUCH LONGER THAN GI

Non-Conventional & Futuristic

LIGHTWEIGHT & STRONGER

Patented

Product

of Bluescope

Australia

ROSTFREI MAKE ZINCALUME STEEL SILOS– BEST MATERIAL FOR GRAINS

Alloy Coating of

Aluminium – 55%

Zinc - 43.4%

Silicon – 1.6 %

At 600 Deg C

Best for

Tropical and

Marine

ENVIRONMENT

Zn+Al+Si Alloy

Coating

Warranty : Only ZINCALUME steel comes with up to 20 years

warranty against perforation by weathering from the date of installation

in neutral environment

1

CORROSION RESISTANCE

“REDEFINING

GRAIN SILO

INDUSTRY”

BARRIER PROTECTION

Aluminium restrictsOxygen and Water toreach the steel surface

BETTER & UNIFORM ALLOY COATING OF

ZINCALUME STEEL

SACRIFICIAL PROTECTION

Zinc protects basemetal by sacrificingitself

GI Steel has only Zinc coating, and in the absencebarrier protection corrodes much faster thanZincalume Steel

55% Aluminium by weight means 80%

by Volume as Aluminum is lighter in

weight

Long

term

evaluati

ons

shows

that

Zincalu

me steel

have a

LIFE >

30 - 40

YRS

except in

severe

marine

applicati

ons

LONGER SERVICE LIFE OF ZINCALUME

COMPARISONSAZ150 VS AZ100 VS Z160 VS Z275

2

BETTER SALT SPRAY TEST

RESULTS

“REDEFINING

GRAIN SILO

INDUSTRY”

Salt Spray Test Results

TEST

RESULTS

DON’T

LIE

WITHSTANDING

2000HRS OF

SALT SPRAY

TEST ASSURES

BETTER

CORROSION

RESISTANCE

Galvanised Steel

Z275

After 240 Hours

Zincalume Steel

AZ150

After 240 Hours

Zincalume Steel

AZ150

After 2000 Hours

Significant Red

Rust

In Good Condition Dark Staining Only

Alloy coating on Zincalume Steel, besides providing Sacrificial

Galvanic Protection to base metal from corrosion gives Barrier

Protection to zinc so that zinc does not oxidise and stays intact

for longer time

CORROSION RESISTANCE –ROSTFREI MAKE SILOS ARE CORROSION RESISTANT

SALT SPRAY TEST RESULT ESTIMATES

Accelerated Corrosion Test - SALT SPRAY TEST

S.No.Material

Description

Material

Designation

Coating Thickness

(One Side)

"Microns"

Coating Thickness

(Both Side)

"GSM"

Standard Red Rust

Time per Micron

(in Hours)

Approx. Time to

5% RustRemarks

A GALVANISED STEEL

2 GI 60 Z180 13 Micron 182 GSM 10 Hours 254 Hours






B ZINCALUME

1 Zincalume AZ100 14 Micron 193 GSM 50 Hours 1350 Hours



Compare always between Coating Thickness Not

GSM as Aluminum is Lighter as compared to Zinc.

3

EXCELLENT THERMAL

REFLECTIVITY

“REDEFINING

GRAIN SILO

INDUSTRY”

Zinc present in GI steel when exposed to weather oxidizes and

becomes dull grey within a year or two and thus its capacity to reflect

sunshine reduces tremendously

Special treatment provided to Zincalume Steel reduces the rate of

oxidation and resultant discolorat ion (Darkening) of Zincalume steels

hence look newer for longer t ime.

EXCELLENT THERMAL REFLECTIVITY

Hence Zincalume absorb only 4-5%

heat as against GI Silos that absorb

22% to 26% heat, hence grains in

Zincalume Silos are are 4 Deg

Cooler than GI Silos

4

LONG LASTING LUSTRE

“REDEFINING

GRAIN SILO

INDUSTRY”

Last Last ing Lustre : Specia l t reatment prov ided to Z inca lume

Stee l reduces the ra te of ox idat ion and resu l tant d i sco lo ra t ion

(Darken ing) o f Z inca lume stee ls hence look newer fo r longer

t ime .

Scratch Resis tant : ZINCALUME stee l i s coated wi th spec ia l l y

deve loped pass ivat ion and res in coat ing as separate layers

that improves i ts mark res is tance qual i t i es . Hence Zinca lume

looks newer fo r long main ta in ing i t s lus t re

LAST LASTING LUSTRE

“REDEFINING

GRAIN SILO

INDUSTRY”

5

DURABILITY & LOW COST

MAINTENANCE

ZINCALUME Stee l has A l loy coat ing of 55% aluminium , 43.4% zinc and 1.6% si l icon which

is car r ied ou t a t 600 Deg C, hence more un i fo rm and s t rong .

VALUE FOR MONEY : Cor ros ion ra tes of Z inca lume Stee l a re very less as compared to

Ga lvan ised s tee l hence Z inca lume Si los have 3-4 Times more l i f e than Ga lvan ised Stee l

EASE OF MAINTENANCE: Laminated Panel techno logy of Z inca lume Si lo assures low cost

ma in tenance & prov ided more Insu la t ion e f fec t

DURABILITY & LOW COST MAINTENANCE

6

MAINTAINS GRAIN QUALITY

AND ASSURES COST SAVINGS

“REDEFINING

GRAIN SILO

INDUSTRY”

Since Zincalume absorb only 4-5% heat as against GI Si los that absorb 22% to

26% heat, hence grains in Zincalume Si los are are 4 Deg Cooler than GI Si los

Cooler Grains requires lesser aerat ion and lesser infestat ion problems thus

more savings on power cost and fumigant cost

High solar heat absorpt ion by grains increases average temperature ins ide si los

which resul ts in yel lowing or discolorat ion of grains .

MAINTAINS GRAIN QUALITY

AND ASSURES COST SAVINGS

Moreover h igh solar heat absorp t ion in GI Si los

makes gra ins more br i t t le and which

ul t imate ly breaks dur ing dry ing & mi l l ing

resu l t ing in more Brokens .

Zinca lume Steel is much bet te r s tee l to s to re

Grain wi th h igh mois tu re content as i t is tes ted

to wi ths tand sal t spray test o f 2000 Hours as

against 240 Hours of GI Stee ls

7

SUITABLE FOR TROPICAL AND

SUB-TROPICAL CLIMATES

“REDEFINING

GRAIN SILO

INDUSTRY”

Trop ica l C l imates have more Rela t i ve Humid i ty in the atmosphere wh ich fac i l i ta tes Z inc to

react wi th atmospher ic oxygen forming z inc ox ide wh ich is rust . Hence Galvan ised stee ls

ge ts cor roded soon .

Zinca lume Stee ls have Bar r ie r p ro tect ion of Alumin ium which saves Z inc f rom coming in

d i rec t contact wi th atmospher ic oxygen and hence wi ths tand harsh t rop ica l cond i t i ons much

be t te r than Ga lvan ised Stee ls

SUITABLE FOR TROPICAL AND SUB-

TROPICAL CLIMATES

SUITABLE FOR TROPICAL AND SUB-

TROPICAL CLIMATES

CONVECTION AIR CURRENTS AND MOISTURE MIGRATION IN SILOS IS

CONTINUOUS PROCESS. ZINCALUME SILOS REDUCES THIS ACTIVITY TO

SOME EXTENT AND THUS REDUCES CONDENSATION EFFECT TOO IN SILO

For any further information,

Please Contact

PK Bhardwaj

Vice President (Grain Management)

Rostfrei Steels Pvt Ltd

Plot No. 211, 2nd Floor,

Okhla Industrial Area, Phase – I I I ,

New Delhi – 110020 (India)

Phone : +91-7290034270

www.rostfreisteels.com

http://www.linkedin.com/in/pkbhardwaj

Thank You Very Much

rostfrei make zincalume silos - future of grain storage

Engineering