AWS D1.1 D1.5 America Standard A588 Corten Steel Plate Anapanga Structural Steel Truss Beam Bridge pansi pakupanga monga momwe zasonyezedwera.
kudzera muzokumana nazo zambiri zama projekiti amsika waku America, timatha kuchita bwino ma projekiti osiyanasiyana okhudzana ndi zitsulo zaku America.
Nthawi yotumiza: Jul-23-2021