SSAW Welded Pipes For Water Conveying

SSAW welded pipes with 3PE coating for water conveying In long distance conveyance of crude oil, natural gas or refined oil, the pipeline usually need to be buried underground. When steel pipes or pipe fittings are in contact with soil and waters, we must consider its external anti-corrosion...

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SSAW welded pipes with 3PE coating for water conveying

In long distance conveyance of crude oil, natural gas or refined oil, the pipeline usually need to be buried underground. When steel pipes or pipe fittings are in contact with soil and waters, we must consider its external anti-corrosion performance to ensure a durable lifespan of the pipeline. The three layers polyethylene(3PE/3LPE) external coating perfectly solves this problem. It consists of a high performance fusion bonded epoxy(FBE) layer, an adhesive layer and an outer layer of high density polyethylene. The three layers external coating has excellent resistance to abrasion, wear, acid, alkali and cathodic disbonding, etc.


Unless otherwise specified by the purchaser, the 3PE(also called 3LPE) coating will be produced and inspected as per EN DIN 30670: Polyethylene coatings for steel pipes and fittings. 



Steel Pipe has 3 layer PE anticorrosion structure: The very first layer with epoxy powder (FBE > 100um), the second layer with adhesive (ADVERTISEMENT), 170 ~ 250um, the 3rd layer with polyethylene (PE) 2.5 ~ 3.7 mm. 3PE anti-corrosion is the most typically utilized technique of anti-corrosion, in addition to 2PE, 2PP, 3PP, their manufacturing process is comparable to but different raw products, this anti-corrosion characteristics of the easy fabrication procedure, the preservative effect, inexpensive pipe production industry normally concur that deterioration

3PE anticorrosive steel pipe characteristics:

1, extremely high tightness, which can greatly conserve energy, minimize expenses, safeguard the environment in long-term operation.

2, strong corrosion resistance, the construction side simply speed, the service life can be approximately 30-50 years.

3, with great resistance to deterioration and effect resistance, low water absorption, the PE (less than 0.01%) at low temperatures.

4, high strength epoxy, PE absorbent and hot melt adhesive softness, etc., have high corrosion reliability


Usage: SSAW welded pipes are Used for low pressure liquid delivery, such as water, gas, and oil.

Process:

SAW(SAWL,SAWH): Spiral Welded
SSAW: Spiral Submerged-arc Welded

Quality Standard:

GB/T3091 
Welded steel pipe for low pressure liquid delivery
GB/T9711 Petroleum and natural gas industries--Steel pipe for pipelines
IS: 3589 Steel tubes for water and sewage
IS : 1978-1982:Steel tubes for use in transportation of oil; gas & Petroleum products
ASTM A53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
DIN 2458 WELDED STEEL PIPES AND TUBES
EN10217 Welded steel tubes for pressure purposes. Technical delivery conditions. Non-alloy steel tubes with specified room temperature properties

API 5L Line Pipe
SY/T5037 Spiral submerged arc-welded steel pipe for pipelines for low pressure field fluid service
SY/T 5040 Spiral submerged arc-welded steel pipe piles
IS : 1978 Steel tubes for use in transportation of oil; gas & Petroleum products
ASTM A252 WELDED AND SEAMLESS STEEL PIPE PILES
Coating Standard:
ANSI/AWWA C104/A21.4 American National Standard for Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water
ISO 21809 Petroleum and natural gas industries -- External coatings for buried or submerged pipelines used in pipeline transportation systems
DIN 30670 Polyethylen coatings of steel pipes and fittings

Steel Grade:

BS:1387, EN10217:S185, S235,S235JR, S235 G2H, S275, S275JR, S355JRH, S355J2H, St12, St13, St14, St33, St37, St44, ST52
API 5L: A, B, X42, X46, X52, X56, X60, X65 X70
GB/T9711: L175, L210, L245, L290, L320, L360, L290, L320, L360, L390, L415, L450, L485, L555
GB/T3091, SY/T5037, SY/T 5040,CJ/T 3022:Q195, Q215, Q235, Q275, Q295, Q345, 08F, 08, 08AL, 08F, 10F, 10, HG5, DF08 SPHC, M8

Size:
SAW SSAW:
Outer Diamter: 219.1mm - 4264mm (8" - 160")
Wall Thickness: 3.2 mm - 26mm
Length: 6mtr-18mtr

End:square ends (straight cut, saw cut, and torch cut). or beveled for welding, beveled,

Surface
: Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti rust oil, Protective Coatings (Coal Tar Epoxy,? Fusion Bond Epoxy, 3-layers PE)

Packing:
Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips, Plastic caps.

Test:Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield
strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test.
Mill Test Certificate:EN 10204/3.1B
Third party inspection:SGS, BV, Lloyds etc.





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