| Qhov project:Piling Engineering Kev taw qhia txog qhov project ipe pawg nyob rau hauv Singapore yog tsuas yog siv nyob rau hauv sib sib zog nqus foundations thiab hloov lub loads los ntawm lub tsev mus rau ib tug muaj zog av txheej pom nyob rau hauv qhov tob.Cov yeeb nkab ntau yam nyob rau hauv loj los ntawm ob peb nti mus rau ob peb ko taw nyob rau hauv txoj kab uas hla. Khoom npe: SSAW SpecificationASTM A252 / API 5L GRB 46 "48" 62" STD Ntau: 1235 Mt Lub teb chaws: Singapore |