Makhalidwe awo ndi awa:
Mphamvu zazikulu: Njanji nthawi zambiri zimapangidwa ndi zitsulo zamtengo wapatali, zomwe zimakhala ndi mphamvu zambiri komanso zolimba ndipo zimatha kupirira kupanikizika kwakukulu ndi zotsatira za sitima. njanji.
Miyezo ya njanjiNthawi zambiri zimakhazikitsidwa ndi International Organisation for Standardization (ISO) ndi miyezo yamakampani anjanji yadziko lililonse.Nayi milingo yanjanji yodziwika bwino:
GB Standard Steel Rail, AREMA standard steel njanji, ASTM standard steel njanji, EN standard steel njanji, BS standard steel njanji, UIC standard steel njanji, DIN standard steel njanji, JIS standard steel njanji, AS 1085 njanji yachitsulo, ISCOR chitsulo njanji.
Nthawi yotumiza: Apr-03-2024