T/HBAS 050-2021 Multiple-Enhanced Steel-Plastic Composite Pipe Technology Specification

Scope

Scope: This document specifies the terms and definitions, symbols, materials, pipeline design, pipeline construction, functional testing, flushing and disinfection, and completion acceptance for multi-reinforced steel-plastic composite pipes. This document applies to pressure pipeline systems and non-pressure pipeline systems used for long-term working temperatures not exceeding 40 °C and maximum nominal pressures not exceeding 1.25 MPa for urban water source transmission, seawater desalination, municipal water supply and drainage, and irrigation and drainage, as well as for rainwater and sewage with a temperature not exceeding 45 °C. Note: The reference working conditions are HDPE pipes and fittings for water supply at 20 °C. When the working temperature, medium, and other conditions change, the purchaser is responsible for selecting the products specified in this document based on their specific application needs, in accordance with relevant regulations, standards, specifications, and this document. Main technical content: Multi-reinforced steel-plastic composite pipes are made of high-density polyethylene (HDPE) plastic, cold-rolled steel strips (such as Q195, Q215), and high-quality carbon structural steel (Steel 45) steel nets as raw materials. They are processed into composite strips by continuous extrusion, and then wound and welded with plastic to form a wound pipe. They can be used for the transformation and construction of water supply and drainage networks, the construction of seawater desalination water transmission networks, and the transmission of special fluids. Due to the introduction of steel strips and steel nets, most of the internal pressure loads of the pipes are borne, greatly reducing the wall thickness of the pipes and reducing the use of non-renewable resources - polyethylene, saving enterprise production costs and social resources. The pipes combine the good anti-corrosion performance of PE pipes, reduce seepage and secondary water pollutio

Development Information

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