GB/T 16749-2018 Bellows expansion joints for pressure vessel
GB/T 16749-2018 Bellows expansion joints for pressure vessel
Basic Information
Scope
1.1 This standard specifies the terms and definitions, general requirements, classification and marking, materials, design, manufacturing, inspection and acceptance, inspection rules, factory requirements, storage and installation of waveform expansion joints for pressure vessels (hereinafter referred to as waveform expansion joints).
[STFZ]1.2 The waveform expansion joints for pressure vessels specified in this standard are applicable to:
a) Single-layer or multi-layer waveform expansion joints used in pressure vessels, which are U-shaped, reinforced U-shaped or Ω-shaped, and can withstand internal or external pressure. The bellows of these joints comply with the provisions of 7.2.1.
b) The design pressure is not greater than 12 MPa.
c) The design temperature is applicable to the following conditions:
1) The allowable use temperature range of the steel materials does not exceed that specified in GB/T 150.2—2011;
2) The allowable use temperature of other metal materials is determined according to the allowable use temperature specified in the corresponding referenced standards.
d) The nominal diameter is not greater than 4,000 mm.
e) The product of the design pressure (MPa) and the nominal diameter (mm) is not greater than 2.7×104.