ASTM 4130 Steel round bar is a kind of structural alloy steel round bar under ASTM A29/A29M-04 standard. Equivalent material for ASTM4130 is 30CrMo(China), SCM430(SCM2)(Japanese), 34CrMo4(1.7220)(Germany).
ASTM A53 Grade A Welded and Seamless steel pipe uses cold rolling, hot / cold drawing, hot drawing process, ASTM A53 Grade A steel pipes have the surface of the black paint, anti-corrosion oil, galvanized or customer requirements.
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