| Qhov project: Txoj kev loj hauv South Africa Kev taw qhia txog qhov project: Cov qauv kev loj feem ntau yog hais txog kev tsim vaj tsev ntawm subgrade, xws li: culvert, channel, choj (tsis overpass), kwj thiab dej ntws kwj dej, kev tiv thaiv kev ua vaj tse pob zeb, pob zeb txoj kab nqes dej (jet trough), cov phab ntsa tuav. Khoom npe: ERW SpecificationTom ntej: API 5L, GR.B 219 * 6.75 Ntau: 1000MT Lub teb chaws: South Africa |