RIGID GRANULES FOR EXTRUSION

Rigid granules for extrusion are recommended for electrical insulating tubes, pipes for transport of fluids with non-corrosive action against PVC, fittings, accesories.

Appearance, shape, sizes and colour of granules :

The granules have an homogenous appearance, cylindrical or lenticular shape, sizes up to max. 5 mm (max. 4% granules above the limit or agglomerated are acceptable). The granules can be natural or coloured as customer's requirement.

Packing :

The granules are packed in polyethylene bags of 30 kgs, in polyethylene bags repacked in polypropylene bags of 30 kgs or big bags of 750 kgs.

Storage and transport of granules :

The granules are stored in closed, dry warehouses, far away of direct UV action, at a distance of minimum 2 m from any heating source; the storage temperature is recommended to be from +5⁰C up to +40⁰C.
The granules must be kept min. 24 hours at room temperature before the processing.
The transport of granules is done by covered means of transport.

Technical properties of granules :

Tehnical properties of granules are shown in the tables. The values shown in the tables are the result of tests made on specimens, got in conformity with test methods, specific to each characteristic; these values are not the values of the characteristics got on finished product, obtained from granules.

Types			RT			YG	RF	RI		RA
Applications			Light	Medium	Heavy	Pressure pipes	Fittings for pipes	Pantzer	Bergman	Accessories for electrical tubes
			Low pressure pipes	Medium pressure pipes	High pressure pipes			Electrical tubes type Pantzer	Electrical tubes type Bergman
Technical characteristics	UM	Test method	Valori
Colour	-	visual	black	natural	grey	grey	grey	light green	natural	light green or natural
Density	g/cm^3	STAS 5886	1,35-1,45			-	1,35-1,46	1,38-1,48		1,38-1,48
		ISOR 1183	-			1,40-1,50	-	-		-
Hardness at 23+2^0C	^0ShA	STAS 8643	75-85			-	73-83	75-85		73-83
		ASTMD 2240	-			72-82	-	-		-
Thermal stability at 180^0C	minutes	BS 2782 met 130A	min 60			min 120	-	min 50		min 55
Thermal stability at 200^0C			-			-	min 50	-		-
Tensile strength	N/mm^2	STAS 6642	min 50			-	min 50	min 40		min 40
		ASTMD 638	-			min 40	-	-		-
Elongation at break	%	STAS 6642	max 20			-	max 20	max 20		max 20
		ASTMD 638	-			min 40	-	-		-
Impact strength (notches specimens)	KJ/m^2	STAS 5801	min 20			-	min 20	-		-
	Kgfcm/cm^2	ISOR 179	-			min 12	-	-		-
Dielectric strength	KV/mm	STAS 6257 met A	-			-	-	min 12		min 12
Water absorbtion	mg/cm^2	STAS 5690 met A	max 1			-	max 1	max 2		max 2
Vicat softening point	^0C	STAS 6921 met B, in air	min 80			-	min 80	min 70		min 70
		ISOR 306	-			min 80	-	-		-