GBT21073-2007 Epoxy-Coated Seven-Wire Prestressing Steel Strand

Standard Overview

GB/T 21073-2007 Epoxy-coated seven-wire prestressing steel strand is a national standard of the People's Republic of China. It specifies the product classification, technical requirements, test methods, inspection rules, packaging, marking and quality certificate of epoxy-coated seven-wire prestressing steel strand.

Why It Matters for Flexible PV Brackets

• Epoxy-coated strand combines high-strength prestressing strand with a protective epoxy layer, providing strong resistance to corrosion and wear.
• It is a key material option for flexible bracket main and anchor cables in corrosive environments, including coastal and offshore PV plants.
• The national-standard acceptance criteria support the selection, inspection and quality assurance of flexible bracket cable systems.

Original Document

The full original standard document (Chinese) is available for download:

Download GB/T 21073-2007 (PDF)