Traditional steel piping coatings have been criticised for unsatisfactory performance with regard to mechanical and chemical attack, resulting in corrosion, the most serious threat to steel pipeline integrity. Sintakote® medium density black polyethylene coating provides a cost-effective means of mechanical, chemical and corrosion protection. The Sintajoint® system of effective pipeline joints combines several benefits in one product. This proprietary system offers ease of installation (similar to competing non-steel products), the strength and reliability of a steel pipe, and the superior properties of the Sintakote® coating. In many applications there is nothing to surpass it.



Technical Details

CHARACTERISTICS	TEST STANDARDS	TYPICAL TEST RESULTS
Coating Material (Polyethylene Compound)	AS 1193 AS 4131	Polyolefin Polymer Base, Antioxidants, Carbon Black
Thickness (Dependent on Pipe Size)	AS 4131 - 1995	1.6 mm - 2.3 mm
Operating Temperature Range		-40°C to +70°C
Melting Temperature		128°C
Water Absorption	AS 4321 - 1995	<0,1% Weight After 100 Days at 23°C
Penetration Resistance	AS 4321 - 1995	<0,15mm at 23°C and 10MPa
Tensile Strength at Yield	AS 4321 - 1995 SABS 1641:1995	15MPa to 18MPa
Environmental Stress Cracking Resistance	AS 4321 -1995 ASTM D1693 SABS 1641:1995	F50>100 hours F50>100 hours
Density	AS 1193 ISO 1183	>920kg/mˆ3 >920kg/mˆ3
Impact Resistance (Falling Weight Test)	AS 4321 - 1995 ASTM G14	>18J at 23°C
Bond Strength Adhesion	AS 4321 - 1995 SABS 1641:1995 DIN 30670-1991	6N/mm to 10N/mm at 23°C 6N/mm to 10N/mm at 23°C 4N/mm to 8N/mm at 50°C
Friction Coefficient		0,1 - 0,3
Dielectric Strength		>15kV/mm
Cathodic Disbondment	AS 4321 - 1995 ASTM G8	<15mm
Elongation (Ductility)	AS 2518 - 1991	300% - 500%
Shore Hardness D (Indentation)		60

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