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D20mm 500MPA All threaded rebar for construction
D20mm 500MPA All threaded rebar for construction Impact of environmental stress on seagrass: For example, pharmaceuticals such as ibuprofen entering the marine environment may have an impact on seagrass. Studies have shown that high concentrations of ibuprofen can cause increased oxidative stress in seagrass, affecting its photosynthesis and metabolite production, thereby affecting its ability to adapt to other environmental stressors. Through these environmental considerations, stress ro... -
PSB930 THREADED STEEL BAR BARRA HELICOIDAL PRODUCERS from Guotai Metal
PSB930 THREADED STEEL BAR BARRA HELICOIDAL PRODUCERS from Guotai Metal Post tensioning is a technique for reinforcing concrete. Post-tensioning tendons, which are prestressing steel cables inside plastic ducts or sleeves, are positioned in the forms before the concrete is placed. Afterwards, once the concrete has gained strength but before the service loads are applied, the cables are pulled tight, or tensioned, and anchored against the outer edges of the concrete. Post-tensioning is a ...
