ERW (hluav taws xob tiv thaiv welded) steel kav yog tsim los ntawm dov steel coils rau hauv lub raj thiab vuam cov leeg siv hluav taws xob weld. Seamless steel kav yog tsim los ntawm tho ib tug khoom siv hlau billet thiab ncab nws mus rau hauv lub raj hollow tsis muaj vuam. Qhov sib txawv tseem ceeb:
1. ** Kev tsim khoom **: ERW muaj ib leeg welded; seamless tsis muaj weld.
2. ** Lub zog **: Seamless kav muaj lub zog muaj zog, zoo dua rau cov kev siv siab / muaj kev ntxhov siab siab.
3. ** Tus nqi them **: Erw yog pheej yig dua thiab nrawm dua.
4. ** Cov ntawv thov **: Seamless yog siv nyob rau hauv cov pej xeem tseem ceeb (roj / roj av, siab temps), Erw rau qis-siab lossis lub hom phiaj.
