JIS SGP yeeb nkab qib yog dab tsi?
JIS G3452 SGP (SGP stands rau "Steel Pipe for Ordinary Piping") yogJapanese Industrial Standard uas qhia txog cov yam ntxwv thiab cov kev cai rau welded carbon steel kav tsim rau cov kav dej zoo tib yam.
Dab tsi yog ASTM sib npaug ntawm JIS G3452?
Lub zog tawm ntawm JIS G3452 yog dab tsi?
Cov yeeb nkab carbon steel tau teev tseg hauv JIS G3452 yog tsim rau cov kav dej zoo tib yam. Lawv muaj cov tshuaj muaj pes tsawg leeg ntawm 0.04% carbon, silicon, manganese, phosphorus, thiab sulfur. Cov kav dej muaj qhov tsawg kawg nkaus tawm lub zog ntawm290 MPa rau, tensile lub zog ntawm 19-25%, thiab yog cim nyob rau hauv dawb.
Cov tshuaj muaj pes tsawg leeg ntawm JIS g3452 yog dab tsi?
