Astm a269 tubing yog dab tsi?

peb yog cov chaw tsim khoom ntawm stainless hlau astm a249 coil tubing, tus qauv yog ASTM A 249 Coil tubing, lub raj yog Standard yog ASTM A249. Qhov saum npoo yog ci, qhov ntev yog 4000m / Coil, coil tube yog mos, tuaj yeem ua tau rau cov roj teb, cov yeeb nkab haum, Khoom siv