The production cycle of manufacturing of preinsulated pipes is carried out in strict conformity with 'Production Schedule' and includes:
• an entrance check-up of raw materials;
• preliminary processing of steel pipes;
• installation of aligning polythene rings;
• installation of Online Remote Check-up system (ORC);
• dragging of a steel pipe with aligning rings into polythene shell;
• installation of collar stoppers on end faces of 'a pipe in a pipe' construction, with the aim to create a hermetic internal space;
• preliminary thermal processing of 'pipe in a pipe' construction, with the aim to get the best adhesion of isolation layer to internal steel pipe and external polythene shell;
• injection of accurate doses of polyol and isocyanate through the apertures at collar stoppers, on automated filling machine;
• final quality control of preinsulated pipes, with measurements of normative parameters and registration of 'The Passport Of Quality'.
In production cycle we use:
• Carbon steel pipes with external diameter from 57 mm to 1020 mm (from 2 inches to 40 inches) and length up to 12 metres (39.4 feet), according to the GOST 550, GOST 8731, GOST 8733, GOST 10705, GOST 20295.
• Steel taps, tees, junctions, T-bends etc., according to Russian state standards GOST 17375, GOST 17376, GOST 17378, GOST 17380;
• Shells made of low pressure / high density polythene, according to GOST 16338.
Typical warranty on our preinsulated pipes is 5 (five) full-service years.
More detailed information on assortment and price of preinsulated pipes is accessible via the pages 'Production' and 'Price-list'.
