Petroleum Pipelines, Gas Distribution Lines, Water Distribution Lines, Foundation and Harbor Pile, Industrial Pipe Network, Steel Structures, Compress Air Line, Refineries, Hydroelectric Power Plants Projects , Transfer of Liquid Hydro Carbon, Transfer of High Temperature Water, Storage Applications of Hydrocarbons
Coating Types
3 Layers Polyethylene Coating
Fusion-Bonded Epoxy Coating
Epoxy Internal and External Coating
Internal Concrete Coating
Polyurethane Coating
Polypropylene Coating
Production Range
| External Diameter | 406.4mm – 3048mm (16" - 120") |
| Wall Thickness: | 5mm - 26mm (0.196" - 1.023") |
| Length: | 8-16 m (16" – 120"), Up to 38 meters without joint for special product |
| Raw Material: | Hot Rolled Steel Coil (HRC) |
| Pipe ends: | Spherical Slip Joint / Slip Joint / Plain End / Bevelled End Pipe Ends Prepared according to customer specifications |
| Joint Details: | Welded joint, Spherical Socket joint, Flanged Joint, Spigot and Socket Joint |
Production Standards & Steel Grades
| API 5L PSL 1: | Gr A, Gr B, X 42, X 46, X 52, X 56, X 60, X 65, X 70 |
| API 5L PSL 2: | Gr B, X42 , X46 , X52 , X56 , X60 , X65 , X70 , X80 |
| ASTM A 53: | Gr A, Gr B |
| ASTM A252: | GRADE1, GRADE2, GRADE3 |
| EN 10217-1: | P 195 TR1, P 235 TR1, P 265 TR1, P 195 TR2, P 235 TR2, P 265 TR2 |
| EN 10224: | L 235, L 275, L 360 |
| EN 10208 - 1/2: | L 245NB, L 290NB, L 360NB |
| EN 10219 - 1/2: | S 235, S 275, S 355 |
| Petroleum and Gas Line Pipes: | API 5L - ISO 3183, EN 10208-2 |
| Water Line Pipes: | EN 10217-1, AWWA C200, EN 10224 |
| Pilling Pipes: | EN 10219-1, ASTM A 252 |
| General Purpose Pipes: | EN 10219-1 |
| Pipe Jointers: | As Per Customer Specifications and Technical Details |
High quality raw materials produced by continuous casting method according to the standard. The Raw Material is homogeneous and does not keep any lamination and inclusion. Corrosion resistance is high due to low phosphor and sulphur ratio.
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External Coating |
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| Surface Preparation: | ISO 8501 - 1, ISO 8502 - 3, ISO 8503 - 1 |
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External Coating |
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| Polyethylene Coating: |
AWWA C 215, DIN 30670, NFA 49710, |
| Polypropylene Coating: | DIN 30678, NFA 49711 |
| Epoxy Coating: | AWWA C 210, EN 10289, NFA 49709 |
| Fusion-Bonded Epoxy: |
AWWA C 213 |
| Bitumen Coating : |
DIN 30673, BS 534 |
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Internal Coating Standards |
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| Epoxy Lining: | AWWA C 210, EN 10289, NFA 49709 |
| Cement Mortar Lining: | AWWA C 205, DIN 2614, TS 8590, EN 10298 |
Coating Quality Control
| Non Destructive: | Visual and Dimensional Check |
| Surface Control After Blasting Test: |
Dust Content, Roughness, Surface Quality |
| Polyethylene Coating Tests: |
Indentation Hardness, Percentage Elongation, |
| Epoxy - FBE Coating Tests: |
Methyl Ethyl Ketone Rasping, V- Cut Bond Strength, Pull -Off Bond Strength, Impact, DSC. |
| Cement Mortar Lining Tests: | Sieve Analyses, Absorption, Strength of Cement Mortar |
Quality control begins from raw materials and then right throughout each stage of the production process. Transfer pipe control is monitored by software which is managed through SAP applications.
The Spiral Pipe Factory aims perfection by integrating ISO 9001:2008 & ISO 14001:2004 environmental management system, OHSAS 18001:2007 Occupational Health and Safety Management Systems.
The tests are guaranteed through tests conducted by using modern measurements and devices, the calibrations of these devices are performed periodically by the accredited corporations.
Quality Control
| Leak Tightness Testing: | Hydrostatic Test |
| Non Destructive Tests: |
Ultrasonic Test of Weld Seam, Ultrasonic Test of Full Body Lamination, Manual Ultrasonic Test of Pipe end, Radioscopic Control of Weld Seam, Radiographic Control of Pipe End, Visual and Dimensional Check |
| Destructive Tests: |
Bending, Tensile, Charpy V Notch Impact, Drop Weight Tear |
| Metallographic Examination: | Micro Examination |
| Chemical Analysis: |
Spectral Analysis |
| Other: | HV and HRC Hardness Test |
PE Coating
Polyethylene Coating is used for Petroleum, Natural Gas and Water pipe lines. PE Coating properties provides excellent resistance to aging, impact and peeling.
Internal Lining & External Coating
Layer 1
Initial shot blasting is performed (Sa 2.5 level) on the pipe surface for the purpose of cleanliness and roughness and then heated to about 200°C with induction coil. Fusion Bonded Epoxy (FBE) is applied on the pipe electrostatically with special spray guns. Fusion Bonded Epoxy layer is the main layer providing the corrosion resistance.
Layer 2
Extruded Adhesive film layer is applied by wrapping on the rotating pipe surface and pressed by a silicon roller to make a good adhesion. The Adhesive layer provides the adhesion between the fusion bonded epoxy layer and the polyethylene layer.
Layer 3
Polyethylene layer is the top coat and is applied like the adhesive layer. Extruded polyethylene is wrapped on the rotating pipe surface and pressed by a silicon roller. After completion of the coating process the pipe is cooled down about to 60°C by water shower. Polyethylene layer provides not only mechanical protection but also good resistance to environmental factors like heat and UV rays.
Epoxy Coating
After obtaining a proper cleanliness and roughness by shot blasting, epoxy is applied to the inside or outside of the pipe surface by airless-spray method either hot or cold according to the customers requirement and related standards.
While solvent free epoxy is widely used in potable water projects, on the other hand, for piling purposes coal-tar epoxy or glass flake epoxy, and for natural gas transmission lines flow coat epoxy are used.
In addition, polyurethane based paint which is being applied hot, is used for sewage water lines.
Cement Mortar Coating
Cement Mortar Lining is applied to the internal surface of the pipe specially for the potable water lines. The cement mortar is applied by a spraying method to the opposite direction of a pipe which is turning with a high centrifugal force. The cement mortar is composed of specified ratios of high quality cement, water, silica and special additive material. The additive material is a binding element between the cement, water and sand, but at the same time providing a smooth lined surface and increasing the performance of the lining.
Coal-Tar Enamel & Bitumen Coating
Following the blasting application, primer is applied to the pipe surface which provides the adhesion between the pipe surface and the coating layer.
Wrapping method is used for the external surface of the pipe and centrifugal method is used for the internal surface of the pipe. The glass fibre is embedded into either hot bitumen or hot coal-tar enamel and then wrapped on the pipe surface.
After completion of the coating process, the bitumen coated pipes are lime washed and the coal-tar enamel coated pipes are wrapped with rock shield material. These kinds of coatings are preferred due to the low cost commonly in the external coating of water line projects.
Shipping & Logistics
Shipping is performed in compliance with API 5LW recommended practice for the transportation of line pipe on barges and marine vessel. Transfer and storage is conducted according to API standards and customer specifications.
Spiral Welded Pipe Range, Click Below