Known a s a leader in the industry, the Kingdom has witnessed major
developments in the pipeline industry. To meet the demands of the
harsh environment and for protection of cross-country and sub-sea
oil, water and gas pipelines against corrosion the Al-Qahtani
Pipe Coating Terminal was established in 1954. Since those
early days when coat and wrap were used, the Company has rapidly
moved to new technological advantages available today and has three
coating plants in the Kingdom equipped with the latest coating techniques.
Nature of Business
Corrosion Control Coatings and other Shop
Services
Internal & External Fusion Bonded
Epoxy Coating
External 3 layer polyethylene and
polypropylene coating
External Heat Activated tape wrap
Internal Cement Lining
Internal & External Liquid Coating
Internal & External Coating of
Girth Welds
Custom Coatings
Applied Coatings for Heat Exchangers,
Vessels and Boilers
Weight coating by impingement and
compression methods
Double Joint Welding of Pipes
Fabrication (cutting, rebevelling
and welding)
Field Coatings & Related Services
Internal & External
FBE coating of Girth Welds
External Heat Shrink Sleeve Installation
on Girth Welds
In-Situ Rehabilitation of Pipes
External Liquid Coatings
Thru-kote sleeves for shop &
field installation.
Fusion
Bonded Epoxy (FBE) Coatings
Fbe coatings, both internal & external, are essentially single
layer (thin) coatings. These are designed for corrosion protection
on steel substrates (especially pipes & fittings).
Al-Qahtani Pipe Coating is the licensee
applicator for specialized coating systems in Saudi Arabia and the
Middle East. The high performance coating systems are basically
intended for downhole tubular's, OCTG's, pipelines and in-plant
piping systems. The comprehensive range of epoxies, phenolic's &
urethanes serve a wide range of uses in stringent environments.
Thru-Kote UB connections are also marketed & installed by AQPCT
under a license agreement. These are the only weldable connections
for surface pipings that help maintain continuous coating integrity
after welding.
Cement mortar lining
This type of lining / coating is used for pipelines for potable
water.
Double jointing
This process is designed to join two double random length pipes
into an 80 LF long double joint. This effectively reduces field
welding / x-ray / girth weld coating into half.
Fabrication
Shop welding has advantages over field welding. Spools can be welded
and coated in the same location in ideal conditions.
Three Layer (Polyethylene / Polypropylene) Coatings
3
LPE & 3LPP coatings are thick coatings, which not only provide
the anti corrosion properties of FBE which is the first layer (primer),
but also provides mechanical protection due to the thick layer of
either PE or PP. 3LPE is rated for low temperature services, whereas
3LPP is rated for services upto 120? C.
Al-Qahtani Pipe Coating was the first
in Saudi Arabia and the Middle East to apply 3 layer polyethylene
coating on 80" diameter pipes for a SWCC (Saline Water Conversion
Corporation) water pipeline project. It was a technological achievement
to be able to perform such a difficult coating on a very large diameter
pipe in accordance to stringent specifications. By this success,
client's such as SWCC are not relieved of past design constraints
and can now design their future projects based on this higher diameter
coating capability of AQPCT.
Negative buoyancy Concrete weight coatings
These are essentially applied to add weight to sub sea or subkha
pipelines. Weight coatings are normally
applied over any type of anti corrosion coatings such as FBE epoxy
or coal tar. Can be applied by two different methods, compression
coat or impingement.
Applied coatings for heat exchangers, vessels and boilers
Applied on internal and / or external surface of tube bundles,
vessels, tanks, etc. This coating prevents fouling & incrustation
in the heat exchangers and enhances life of the same. Maintenance
/ cleaning costs are greatly reduced due to less maintenance requirement.
Custom Coating
Al-Qahtani
has the most modern and technically advanced facility for applying
External/Internal FBE, high temperature phenolic and other coatings
on pipe fittings, pipe spools, valves, vessels, heat exchangers,
tanks etc. These are professionally applied by highly skilled personnel
to very stringent standards. Girth weld coatings of precoated, prefabricated
pipes and fittings are applied in theshop as well as at client jobsites
by specially trained people.
Internal Fusion Bonded Epoxy Coating Of Field Girth Welds
Al-Qahtani Pipe Coating Terminal developed
the capability to coat the internal girth weld area of the coated
pipes from sizes 12.750 inch up to 60 inch diameter. Capabilities
can be developed for larger diameters if so required by clients.
This service contributes to providing an end-to-end corrosion protection
system with fusion bonded epoxy. The most modern internal line travel
equipment performs functions of cleaning, vacuuming, coating and
video inspection of the girth weld area.
External Fusion Bonded Epoxy Coating Of Field Girthwelds
Al-Qahtani Pipe Coating Terminal also
developed the capability to coat the external girth weld area of
the coated pipes from sizes 2 inch up to 60 inch diameter. Capabilities
can be developed for larger diameters if so required by clients.
This service contributes to providing an end-to-end corrosion protection
system with fusion bonded epoxy.
Pipeline Rehabilitation
Al-Qahtani Pipe Coating Terminal developed
its own spread of line travel equipment for hydroblast cleaning,
sand preblasting, grit blasting, spray coating of the external surface
of pipe. Pipelines where tape coatings or similar coatings have
failed are field rehabilitated while in service or out of service
using in-situ techniques to remove failed coatings like tape wraps
or other external coatings and reapplied with liquid coatings like
coal tar / polyurethane.