GB/T 151-2026 Heat exchangers
GB/T 151-2026 Heat exchangers
Basic Information
Scope
1.1 This document specifies the general requirements for metal heat exchangers, and stipulates the requirements for the materials, design, manufacture, inspection, acceptance, and installation and use of shell-and-tube heat exchangers.
1.2 The general requirements of this document apply to shell-and-tube heat exchangers and other structural types of heat exchangers. All content of this document applies to shell-and-tube heat exchangers.
1.3 The design pressure applicable to this document is:
a) The design pressure of shell-and-tube heat exchangers shall not exceed 35 MPa;
b) The design pressure of other structural types of heat exchangers shall be determined according to the corresponding referenced product standards.
1.4 The design temperature applicable to this document is:
a) The design temperature range of steel heat exchangers shall be in accordance with the allowable use temperature range of the materials listed in GB/T 150.2—2024;
b) The design temperature of non-ferrous metal heat exchangers shall be determined according to the allowable use temperature of the materials listed in the corresponding referenced standards.
1.5 This document applies to shell-and-tube heat exchangers with a design pressure (MPa) and nominal diameter (mm) product not exceeding 4.05×10 4. Among them, the nominal diameter of non-extractable tube bundle shell-and-tube heat exchangers shall not exceed 6,000 mm, and the nominal diameter of extractable tube bundle shell-and-tube heat exchangers shall not exceed 2,600 mm.
1.6 Shell-and-tube heat exchangers exceeding the scope of 1.5 shall be constructed in accordance with this document.
1.7 This document does not apply to the following heat exchangers:
a) Direct flame-heated heat exchangers;
b) Flue-type waste (exhaust) heat boilers;
c) Heat exchangers in nuclear energy devices with the risk of neutron radiation damage failure;