Five practical guides written for engineers, consultants and EPC buyers sourcing prestressed concrete strand. Each one answers a single question and states the boundary where the project specification takes over.
Why stress-relieving matters, what the 1000-hour relaxation limit actually controls, and how to tell a genuine low-relaxation product from a normal-relaxation one on a data sheet.
Read the guideDiameter is a system decision, not a preference. The five inputs that decide it, and the mistakes that appear when strand is chosen before the anchorage is fixed.
Read the guideThe difference in load transfer, corrosion protection and field work, and how the choice changes what you must order alongside the strand.
Read the guideWhat each column on an EN 10204 3.1 certificate means, which values to check against the standard, and what a certificate does not cover.
Read the guideThe twelve fields that let a supplier quote accurately the first time, and the omissions that cause specification changes after the order is placed.
Read the guideHow Global Overseas tests strand, what documents ship with an order, and how to arrange third-party inspection.
Open quality pagePrestressed concrete strand is a seven-wire, high-strength steel cable used to apply a controlled compressive force to concrete. Global Overseas manufactures low-relaxation PC strand to ASTM A416 Grade 270 in 9.53 mm, 12.7 mm and 15.24 mm diameters, together with PC wire, unbonded strand, anchorage systems and post-tensioning accessories.
Start with the engineer's required prestressing force, the strand quantity per tendon, the approved anchorage and wedge dimensions, duct or sheathing clearance and the stressing jack capacity. Diameter selection must follow the approved drawings and the anchorage supplier's compatibility requirements, not a preference for a larger strand.
A mill test certificate to EN 10204 3.1 covering tensile, yield, elongation and relaxation for the supplied heat numbers, a relaxation report per production batch, and the packing list with coil tag numbers. Third-party inspection by SGS, BV or Intertek is added when the order requires it.
Nominal diameter, applicable standard and grade, relaxation class, quantity, coil weight or cut length, packing method, destination port, target delivery window and any approved-vendor or inspection requirement. For post-tensioning orders, add the anchor type, wedge or jack interface and duct type.
Send your specificationSend it with your drawings and standard — our export engineers answer technical questions directly.