Cheap Price K7 K9 Ductile Iron Pipes Engineering Pipe for Municipal Cast Iron Pipe Bulk Seamless Round Anti-corrosion Coated

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DN	Nominal value	Tolerance 1)	Maximum crack width and radial displacement
80-300	4	-1.5	0.4
350-600	5	-2	0.5
700-1200	6	-2.5	0.6
1400-2000	9	-3	0.8
1）A negative tolerance only is given.
Note: Pipe end may have a chamfer of maximum length 50 mm.

External coatings	Internal coating(linings)	Coating of the joint area
- Metallic zinc with finishing layer, in accordance with ISO 8179-1;	- Portland/Blast furnace slag/Sulphate/ High Aluminum Cement Mortar, in accordance with ISO 4179;	- Epoxy coating;
- Zinc rich paint with finishing layer, in accordance with ISO 8179-2;	- Cement mortar lining with seal coat, in accordance with ISO 16132;	- Polyurethane coating
- Epoxy coating, in accordance with EN 14901;	- Epoxy coating, in accordance with EN 14901;
- Polyethylene sleeve, in accordance with ISO 8180;	- Polyurethane lining in accordance with EN 15655;
- Alloy of zinc and aluminum with or without other metals, having a minimum mass of 400 g/m2, with finishing layer;
- Extruded polyethylene coating in accordance with EN 14628;
- Polyurethane coating in accordance with EN 15189;
- Cement mortar coating in accordance with EN 15542;
- Adhesive tape;