GB/T 28185-2025Heat exchange unit for urban heating (English PDF)

1 Scope

This document specifies the classification and model, general provisions, technical requirements, test

Test methods, test rules, marking, instruction manual, product certificate, packaging, transportation and storage.

This document is applicable to heating with a design pressure not exceeding 2.5 MPa, a hot water temperature not exceeding 150°C, and a steam temperature not exceeding 350°C.

Design, production and inspection of heat exchange units used in (cold) heat exchange systems.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to

This document.

GB/T 151 Heat Exchanger

GB/T 700 Carbon structural steel

GB/T 706 Hot-rolled steel sections

GB/T 2518 Continuously hot-dip galvanized and zinc alloy coated steel sheets and strips

GB 3096 Acoustic Environment Quality Standard

GB/T 4208-2017 Degrees of protection provided by enclosures (IP Code)

GB/T 5338.1 Series 1 Technical requirements and test methods for containers Part 1.General purpose containers

GB/T 5656 Technical requirements for centrifugal pumps (Class II)

GB/T 5657 Technical requirements for centrifugal pumps (Class III)

GB 5749 Sanitary standard for drinking water

GB/T 7251.1 Low voltage switchgear and controlgear Part 1.General

GB/T 7251.2 Low voltage switchgear and controlgear Part 2.Power switchgear and controlgear

GB/T 7251.3 Low-voltage switchgear and controlgear Part 3.Distribution boards operated by general personnel (DBO)

GB/T 7251.5 Low-voltage switchgear and controlgear Part 5.Public grid power distribution equipment

GB/T 7251.6 Low-voltage switchgear and controlgear Part 6.Busbar trunk system (bus duct)

GB/T 7251.8 Low-voltage switchgear and controlgear Part 8.General technical requirements for intelligent complete sets of equipment

GB/T 7251.10 Low-voltage switchgear and controlgear Part 10.Guidelines for specifying complete sets of equipment

GB/T 7306.2 55° Sealing Pipe Thread Part 2.Conical Internal Thread and Conical External Thread

GB/T 8163 Seamless steel pipe for conveying fluids

GB 8624-2012 Classification of combustion performance of building materials and products

GB/T 9124.1 Steel pipe flanges Part 1.PN series

GB/T 9125.1 Fasteners for steel pipe flange connections Part 1.PN series

GB/T 9330 Plastic insulated control cable

GB/T 9969 General principles for instructions for use of industrial products

GB 10071 Measurement method for environmental vibration in urban areas

GB/T 12235 Steel stop valves and lift check valves for petroleum, petrochemical and related industries

GB 27790 | GB/T 21087 | CJ/T 395 | GB/T 35842 | GB/T 33833 | […]