GOST R 58097-2018 PDF

Full title and description

ГОСТ Р 58097-2018 — Трубы гибкие полимерные армированные с тепловой изоляцией и соединительные детали к ним для наружных сетей тепло- и водоснабжения. Общие технические условия. (English title: "Flexible reinforced plastic pipes with thermal insulation and fittings for them for district heating and water‑supply networks. General specifications").

Abstract

This national standard (2018) specified requirements for the design, materials, construction, testing, marking, transportation and storage of flexible reinforced polymer pressure pipes with thermal insulation and their fittings for outdoor district heating and cold/hot water distribution networks. It covered expected operating temperatures (up to 115 °C), maximum working pressures (up to 1.6 MPa), performance tests (including long‑term hydrostatic strength and cyclic/pressure endurance), and manufacturer responsibilities such as provision of thermal‑loss data and service‑life factors.

General information

• Status: Withdrawn / cancelled (the approval order of 05.04.2018 was revoked by Rosstandart order of 25 November 2020, N 1163‑ст; the standard was introduced originally on 1 September 2018).
• Publication date: 2018 (approved 5 April 2018; date of introduction into force 1 September 2018).
• Publisher: Standartinform (Moscow), 2018.
• ICS / categories: ОКС (ICS) 23.040.20; 23.040.45; 83.140.30.
• Edition / version: 2018 — introduced for the first time (first edition).
• Number of pages: 24 pages (standard text as distributed in PDF).

Scope

The standard applied to flexible, reinforced polymer pressure pipes provided with a thermal‑insulation layer and a protective outer sheath, and to the associated fittings, intended for outdoor district heating and water‑supply mains with variable heat‑carrier temperatures up to 115 °C and maximum operating pressure up to 1.6 MPa. It excluded composite pipes made from thermosetting (reacto) plastics. The document specified constructional classes, nominal dimensions and tolerances, and requirements for materials, mechanical and thermal performance, and expected service life.

Key topics and requirements

• Definitions and classification of insulated flexible reinforced polymer pipes and fittings (including designation examples and operational classes).
• Constructional requirements: layer structure (internal pressure pipe, reinforcing layer, thermal insulation, protective outer sheath), nominal diameters and wall‑thickness rules.
• Material requirements: use of cross‑linked polyethylene variants for pressure pipes (PE‑Xa or PE‑Xb) with specified long‑term strength (MRS) and other raw‑material characteristics.
• Performance limits: maximum operating temperature (up to 115 °C) and maximum working pressure (commonly up to 1.6 MPa) for specified classes.
• Type and routine tests: long‑term hydrostatic strength, 1 000‑hour pressure tests at maximum temperature, cyclic temperature/pressure tests, bend/flex tests on samples, oxygen permeability and thermal‑loss measurements.
• Marking, manufacturer information and documentation: required marking content, thermal‑loss (heat loss) data per size (rounded to 0.1 W/m), and recommendations for storage, transport and installation.
• Service‑life and safety: provisions for determining working pressure and predicted service life (including mandatory appendices on service‑life factors and calculation methods).

Typical use and users

Intended users include pipe and fitting manufacturers, product designers and R&D teams for polymer‑insulated piping, district heating system designers, municipal utilities and contractors installing underground or trenchless heating and water mains, test laboratories performing type and acceptance testing, and conformity‑assessment bodies involved in product certification or declarations of conformity. The standard was used as a technical basis for product specification, testing regimes and procurement criteria for insulated flexible polymer piping systems.

Related standards

The standard referenced and related to several other GOST/ISO documents, notably: ГОСТ ИСО 161‑1 (nominal diameters and pressure series), ГОСТ ISO 1167 (internal pressure testing), ГОСТ 32415‑2013 (thermoplastic pressure pipes for water and heating), ГОСТ Р 53630‑2015 and ГОСТ Р 56730‑2015 (multilayer and flexible insulated polymer pipes), plus test method standards for thermal conductivity and DSC. These referenced documents define test methods, materials requirements and dimensional series used by ГОСТ Р 58097‑2018.

Keywords

flexible polymer pipe, reinforced pipe, thermal insulation, protective sheath, district heating, water supply, fittings, PE‑X, long‑term hydrostatic strength, working pressure, service life, ГОСТ Р 58097‑2018.

FAQ

Q: What is this standard?

A: ГОСТ Р 58097‑2018 is a Russian national standard (2018) that provided general technical specifications for flexible reinforced polymer pressure pipes with thermal insulation and their fittings intended for outdoor district heating and water‑supply networks.

Q: What does it cover?

A: It covers pipe and fitting construction, material and dimensional requirements, performance and type tests (including long‑term hydrostatic strength and cyclic tests), marking, transport/storage rules, and methods for estimating working pressure and service life for insulated flexible polymer piping systems.

Q: Who typically uses it?

A: Manufacturers of insulated polymer pipes and fittings, designers and engineers of district heating and water networks, utilities, contractors, test laboratories and certification bodies. It served as a procurement and testing reference for those supplying or installing insulated flexible polymer piping.

Q: Is it current or superseded?

A: The standard was originally approved on 5 April 2018 and introduced 1 September 2018, but records indicate the approving order was revoked by Rosstandart on 25 November 2020 (Order N 1163‑ст), and the document is listed as having lost force. Users should treat the standard as cancelled/withdrawn and check the official Rosstandart information system or current national index for any replacement or successor documents before using it for compliance or procurement.

Q: Is it part of a series?

A: It is part of the body of GOST/GOST‑R standards for plastic piping systems and insulated pipes; it cross‑references and complements other standards such as ГОСТ Р 56730‑2015 (flexible polymer pipes with insulation) and multilayer/method standards for thermoplastic pressure pipes and testing (listed in the references).

Q: What are the key keywords?

A: Flexible reinforced polymer pipes, thermal insulation, fittings, district heating, water‑supply, PE‑X, working pressure 1.6 MPa, max. temperature 115 °C, long‑term hydrostatic strength, service life.