GB/T 48116-2026Specialized instruments and meters for chemical industry - Acoustic measuring instrument for the tightness of flange bolt assembly (English PDF)

GB/T 48116-2026 is the English-translated version of 化工专用仪器仪表 法兰螺栓副紧固度声学测量仪.

This standard belongs to the family of specialized instruments and meters for the chemical industry and deals with an acoustic measuring instrument for the tightness of flange bolt assemblies. Bolted flange joints are common in pipework and pressure equipment, and the tightness of the bolts bears on joint integrity and leakage. An acoustic instrument offers a way of assessing that tightness without dismantling the joint.

The document is aimed at manufacturers of such measuring instruments, plants in the chemical and petrochemical sectors that inspect and maintain flanged piping, inspection and testing bodies, and engineers who specify or calibrate this kind of equipment. It is a recommended (voluntary) national standard taking effect on 1 March 2027, and the China Petroleum and Chemical Industry Federation is the responsible body.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.

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