SKAFS - Rostfrei Steels (1)

SKAFS International LLC
“Think Green”
PO Box 1643, Al Khuwair, PC 133, Muscat, Sultanate of Oman.
Email: rp@skafsint.com Mobile: 00968 91247316
Storage & Material Handling Solutions

“Think Green”
Table of content
1. SKAFS - Introduction
2. ROSTFREI – Introduction
3. Authorization Letter from ROSTFREI
4. Products
5. Steel SMC Tanks
6. Zincalume Tanks
7. Glass Fused to Steel Tanks
8. Grain Storage Tanks
9. Material Handling Equipments
10. Fittings & Accessories

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SKAFS Introduction:
SKAFS an established company dealing in MEP services & has in-house construction division
running operations & being managed by highly qualified and experienced personnel supported
by technically efficient and competent workforce capable of handling the projects of different
nature and volumes.
SKAFS is committed to the objectives of quality works and timely completion of the projects to
the complete satisfaction of clients.
SKAFS is focused to contribute to the development of the region and capable to work with
growing demands of construction industry.
The business was formed to meet the demand for high quality building services engineering,
construction and maintenance.
SKAFS is now recognized as the leading MEP Services Contractor in the Sultanate of Oman.
The scope of activities includes all aspects of building services design, procurement, installation,
testing and commissioning of multi-service installations viz.:
 All types of Piping works & Storage Tanks
 Electrical, (Medium Voltage, Low Voltage and Low Current Systems)
 Mechanical
 Plumbing and Sanitary Works
 Air-conditioning
 Instrumentation
 Telecommunications
 Security & Surveillance Systems
 Audio – Video Convergence & UPS Systems
At SKAFS we believe in keeping our client’s interest on top priority and we extend our
commitment in making our client’s views into reality keeping in mind all the finest details
involved in the process.
We emphasize our commitment to complete the project within the target dates, in full
compliance with the contract requirements.

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Introduction:
Rostfrei Steels with our steadfast commitment and timely delivery of various products
like Liquid Storage Tanks and Grain Storage Silos, the company has set new benchmarks
with its quality products and effective services.
The company believes in delivering quality based performance with the team of its skilled
workers and experienced technicians. The company has touched the apex of satisfaction
and success with its well established clientele and has earned an expertise in fabricating
and engineering steel structures in multiple dimensions. Multifarious services are offered
to our revered clientele that includes designing, conceptualizing, manufacturing, supply,
installation, erection and completion.
Rostfrei Steels Products are manufactured as per Australian Standard AS 1397:2002,
American Standard ASTM A792Mand Indian Standards IS15961:2012 & ISO 9364.
We have 10+ years of experience Rostfrei have significantly invested in introducing new
equipment and technology in recent years, enabling us to provide the most advanced
and highest quality services to our clients. We provide design & manufacturing
engineering support, outstanding customer service, consistent product quality, and on-
time delivery of our products. The combination of our Zincalume technology and and our
experienced engineering staff allows us to reduce costs significantly, delivering on time,
every time.
Why Rostfrei Steels?
Rostfrei have been creating innovative ideas for Storage Tanks and Storage Silos through
constant research and development. By addressing ever-changing requirements of the
industry, Rostfrei keep clients updated with the same. Some of other parameters that
justifies doing business with us are as follows:
 Advanced Quality
 Continuously Increasing Efficiency
 Credible Corporate Image
 Effective Customer Relations Management
 Highest Manufacturing Standards
 Minimal Wastage And Costs
 Superior Design

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“Think Green”
Products:
Liquid Storage Tanks
ROSTFREI™ has earned a reputation of providing expert multifarious services to our
venerated clientele that includes designing, manufacturing, supply, installation, erection
and completion of various types of liquid tanks used for numerous types of applications.
Rostfrei Steels offers the comprehensive services in the sector of water infrastructure,
solid waste management, and agricultural infrastructure. We complement these services
with wide ranging assistance in optimization of operation of new or rehabilitated water
plants, private and government water schemes. We offer solutions from concept to
commissioning and go the extra mile by holding the hand of the customer till Operations
& Maintenance of the tanks.
Positioning of tanks:
 Overhead Tank
 Elevated Tank
 Underground Tank
 On the ground Tank
 In the Basement

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Steel SMC Tanks:
Rostfrei SMC panel tanks are designed in conjunction with foremost GRP Research
institute authorities resulting in a quality end product featuring a modular, light weight,
aesthetically appealing design that provides clients with reliable leak free performance
and long service life. Rostfrei SMC tanks are sealed using a unique food grade, water
resistant sealing tape with high elasticity to ensure lifelong water tight protection of your
investment for upwards of 25 years.
Features:
 Designed for ease of replacement – individual panels can be replaced without the
need to rebuild the whole tank.
 Capacity Range – Upto 500 Cubic meter.
 Excellent hygiene – No outside light influence ensures no potential for bacteria.
 Non-toxic SMC mould pressed panels, installed using external metal fastening and
tubing system combination.
 Design performance: Tensile strength >59 MPa degree of hardness >30 Bending
strength >78 MPa Water-absorptivity.
Design performance:
 Tensile strength >59 MPa
 Palestinian degree of hardness >30
 Bending strength >78 MPa Water-absorptivity <1.0%
 Elasticity of flexure module 5900 MPa
Product performance:
The SMC mold pressing veneer is selects the non-toxic resin to solidify after the mold
pressing process. The box body soaks in water, the water quality to be stable, does not
contain the toxicity, and conforms to national standard
The water tank seal uses the sealing tape which develops specially. This sealing tape non-
toxic, water resistant, the elasticity is big, the permanent deformation is small, and the
lifetime may above 30 years.

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Physical Properties of SMC Panel Tanks:
Standard Design of SMC Panel Tanks:

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Zincalume Tanks:
These tanks are fabricated using the highest grade of “Zincalume Steel” as MOC, which
lasts up to four times longer than galvanized steel. We use our vast industrial knowledge
experience in continuous up gradation of latest software technologies to acquire
supreme designs, execution capability and techniques. ROSTFREI™ efficiently proffers a
wide product line to its global customers as per their specific requirements at highly
competitive prices.
Zincalume steel, a premium material complies with requirements of Indian Standard – IS
15961, International Standard – ISO 9364, Australian Standard – AS 1397 and American
Standard – ASTM A 792M.
Zincalume steel is manufactured by a continuous hot dipped metallic coating process.
The alloy coating of Zincalume steel provides excellent corrosion resistance and has been
found to possess greater resistance to cracking and peeling. Zincalume® steel has an alloy
coating of 55% Aluminium, 43.5% Zinc and 1.5% Silicon. The 150g/m2 (with option of
200g/m2) coating weight is distributed equally on both surfaces of the coated strip.
Metallic surface is coated with separate layers of special passivation solution and resin.
Tested Brand Zincalume steel, the most stringent production standards
ensures its superior performance and durability.
On continuous research and development, Zincalume® steel
now ensures that it is able to withstand harsh environment
for a longer period of time.
Sacrificial Protection After nine months exposure under industrial marine
environment conditions, Zinclaume Steel gives better
performance at scribes of lower widths.
At the cut edge, galvanization steel is more susceptible to
corrosion, as compared to Zincalume steel.
Durability and Safety The base steel is coated with 55% Al-Zn Alloy with 150g/m2
coating. It combines the sacrificial benefits of Zinc with long
life barrier protection.

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Glass Fused to Steel tanks:
In order to ensure requirements for AGRICULTURAL SECTOR, WASTE WATER
TREATMENT PLANTS, BIOGAS STATIONS there where build a glass coated steel plates
production line. To ensure integrated tanks and hoppers surface protection the new zinc
works was also established. From the early beginnings of the production line, there have
been delivered over 15 000 tank of variable dimensions.
The tanks are designed in accordance with standards EN and ISO
The glass – fused tanks might be used for a storage of fluid or loose materials. The tanks
are also a fundamental building element of environmental technologies facilities such as
waste water treatment plants (WWTP) and biogas stations.
Technology Overview
The enamel is a solid, smooth and shiny cover of silicate glass fused to steel. The enamel
is fused in a special furnace at a temperature exceeding 800°C . The steel rounded
(cylindrical) shell of the tank is built from two-layer glass-fused sheets coated on both
sides. The sheets are attached with special high-grade bolts and sealed by constantly
flexible silicone (sealant). The connecting material and shell accessories are equipped by
the surface treatment. Verified life time of glass fused to steel tanks is more than 40
years and have high abrasion resistance and chemical resistance (pH 2-13) standard. GLS
tanks are used for high variability of construction tank design (diameter, height, piping
connection) and placing of technical equipment (pumps, agitators, heating..) These tanks
are very quick and have safe construction methodology.
Comparison
Glass is at its strongest under compression of Glass Fused tanks have cross section
of TRIFUSION glass magnified by 100 times under the light microscope.
If we take an even closer look at the glass/steel boundary we can see that the glass and
the steel have truly fused together forming a highly keyed interface which makes for a
very strong physical bond between the two components. Whereas, If we look closely at
the typical epoxy/steel boundary you will even see a gap between the coating and the
steel clearly showing a point where there is no bonding at the epoxy/steel interface.

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CHARACTERISTICS OF ROSTFREI STEELS GLASS FUSED TANKS:
 Competitive service life regarding storage of very aggressive compounds
compared to concrete or Komaxit tanks.
 Verified life time of glass fused to steel tanks is more than 40 years.
 High abrasions resistance and chemical resistance (ph. 2—13) standards.
 High variability of construction tank design( diameter, height, piping connection)
and placing of technical equipment (pumps, agitators, heating..)
 Very quick, safe construction methodology
 Potential reconstruction or relocation of the pre-built tank.
 After their service life or purpose expiration or relocation of the prebuilt tanks.
 After their service life or purpose expiration, tanks can be easily and cheaply
dismantled and ecologically reused.
 Potential continuous visual checks
 Small footfrient and low height of tank
 Easy transportation of the tanks in its dismantled form
 Worldwide installation experience, including many performing under extreme
conditions.

“Think Green”
Application Options:
Loose Material FLUID AGRICULTURE OTHERS
Limestone
Cement
Fly- Ash
Wood waste
Sand & Gravels
Granules
Portable Water
Waste Water
Fire Water
Desalted Water
Brine
Oil
Cereals
Liquid Manure
Dung Water
Liquid Fertilizers
Feed mixture
Silage
Tanks for
WWTPs
Tanks for Biogas
stations
Gasholder
Salt
Loose Material Tank Raw Water Tank
Farm Sewage Tank Liquid Storage Tank

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Grain Storage Silos
CUSTOMERS DIRECT SOLUTION FOR THEIR STORAGE, AERATION, CONVEYING, CLEANING
AND DRYING NEEDS FOR GRAIN AND FLOWABLE BULK COMMODITIES.
ROSTFREI™ corrugated Steel Silos has introduced the revolutionary solution for grain
storage by using proprietary Zincalume steel to reduce the solar absorption and thereby
drastically reducing the aeration cost required for silos. These Silos are precisely designed
according to the world class standards & specifications for long term storage of varied
grains and cereals and other materials such as coffee beans, cotton, etc. while
maintaining their unhindered quality. We offer Grain storage systems which consists of
Grain Storage Silos, Handling Equipment, Monitoring Systems, Aeration Systems ,
Automation Systems. These silos are specifically designed for excellent protection and
are made available as per customer’s specific requirements. Our Silos are available
with Flat Bottom & Hopper Bottom to fit into client’s specific requirement.
Distinguished Characteristics
 High tensile strength
 Designed to stand up to snow loads & strong winds
 Special sturdy cross sectional roof structure
 Robust frame
 Designed to adhere to seismic & soil conditions
Types of Silos
 Coffee Silo
 Soya Silo
 Wheat Silo
 Rice Silo
 Paddy Silo
 Maize Silo
 Corn Silo
 Cotton seeds Silos
 Barley Silo
 Malt Silo
 Seeds Silo
 Sorghum Silo
 Castor Silo
 Guar gum Silo
 Soybean Silo

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MATERIAL HANDLING EQUIPMENTS
OFFERING HIGH QUALITY MATERIAL HANDLING AND STORAGE SOLUTIONS
Conveyors
Rostfrei design and manufacture chain conveyors, screw conveyors and belt conveyors
for different applications to meet operational needs.
Chain Conveyors
Chain conveyors are equipped with high quality component and are ideal for horizontal
and inclined conveying of products demanding a completely closed dustproof transport
such as grain, pellets etc.
Rostfrei chain conveyors are designed in a modular system and be supplied in exact
required length with different capacity ranges from 2TPH to 1000TPH. They are available
with various accessories making them suitable for special applications, and with
additional features which raise the level of safety.
Screw Conveyors
Screw conveyors are designed for competent and consistent transport of a wide range of
agricultural and industrial products. Equipment and accessories are manufactured both
for straightforward conveyors and for complete systems for large turn-key projects.
These conveyors are constructed with reversible motors and several gate-controlled,
bottom dump discharge points to provide flexibility.
Belt Conveyors
Belt conveyors are used for moderate horizontal conveying of granular products like
grains, pellets, powder etc. The shape of the belt , system inclination and speed of
movement are dependent on the solids content and consistency of the material. Typical
speed of belt conveyor is 11-16 km/hr.
Slide Gates
Rostfrei slide gate valves are designed to stop grain flow from outlets of storage bins,
silos and other discharge point. Slide gates are available in manually actuated and
pneumatic slide gate valves. The standard sizes are available in standard size ranging
from 6inch to 36 inch.
Bucket Elevator
Bucket Elevators are used for transporting flowable bulk material vertically. Rostfrei
Bucket Elevators are designed in such a way that withstand easy mechanical process with
high quality components.
A bucket elevator can elevate a variety of bulk materials from light to heavy and from
fine to large lumps.

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A centrifugal discharge elevator may be vertical or inclined.
 Vertical elevators depend entirely on the action of centrifugal force to get the
material into the discharge chute and must be run at speeds relatively high.
 Inclined elevators with buckets spaced apart or set close together may have the
discharge chute set partly under the head pulley. Since they don’t depend entirely
on the centrifugal force to put the material into the chute, the speed may be
relatively lower.

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Fittings & Accessories
SILOS
 Aeration System
 Ventilation System
 Sweep Auger
 Temperature Monitoring System
 Control Panels
 Diverter valve
Aeration System
Proper aeration is an important part of every grain storage system and is essential to
maintain grain quality. Our aeration systems are designed to provide the best aeration in
the most difficult product. Properly operated aeration systems can save your money,
control insect infestation and moisture migration, and reduce grain spoilage.
We use rigid corrugated, perforated aeration duct made from heavy-gauge galvanized
steel combined with high- efficiency axial aeration fans. We ensure the best aeration to
customer by combining easy and fast installation with the industry’s most powerful
structure design.
Sweep Auger
The smooth finish of our sweep auger ensures the minimum transfer of residue;
therefore reducing the risk of contaminated products. This is an ideal application to assist
with the horizontal and high conveying of free flowing granular and pelleted materials.
Temperature Monitoring System
This Provides full control for quality storage. It is a passive system with virtually no
maintenance. The probes can be replaced without emptying the silo and are supported
on 2 beams, preventing weight being applied to the roof.
Silo Control Panels
Silo Control panels has a control system which is designed to control the filling of storage
silos. All work of the system displayed on the panel, running engines are marked glowing
lights.

SKAFS - Rostfrei Steels (1)

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