GOST ISO 12162-2006 Thermoplastics materials for pipes and fittings for pressure applications. Classification and designation. Overall service coefficient
2017GOST ISO 12162-2017 Thermoplastic materials for pipes and fittings for pressure applications. Classification, designation and design coefficient
2006GOST ISO 12162-2006 Thermoplastics materials for pipes and fittings for pressure applications. Classification and designation. Overall service coefficient