Hauv kev lag luam thoob ntiaj teb EPCM thiab kev tsim qauv vaj tsev tam sim no, kev xaiv cov seem hlau kom zoo yog qhov tseem ceeb heev. Tus Txheej Txheem EuropeanEN H-Beam (HEA/HEB)thiab American StandardASTM W-Beam (Dav Flange Beam)Puas yog ob yam khoom tseem ceeb uas piv rau feem ntau yog lub hauv paus tseem ceeb ntawm cov haujlwm tsim kho hauv ntiaj teb. Cov hauv paus hnyav, cov chaw tsim khoom lag luam lossis cov tsev siab yog cov hlau zoo tshaj plaws rau koj qhov project?
Lub sijhawm tshaj tawm: Lub Rau Hli-17-2026