ASTM A53 Gr.B Seamless Carbon Steel Pipe+
ASTM A179 Carbon Steel Pipe+
JIS G3454 Carbon Seamless Steel Pipe+
JIS STPG38 Seamless Carbon Steel Pipes+
GB5312-1999 Seamless Carbon Steel Pipe+
GB5310-1995 Seamless Steel Pipe+
GB/T17396-2009 Seamless Carbon Steel Pipe+
GB/T8163-2008 Seamless Steel Pipe+
GBT8163 Seamless Carbon Steel Pipes+
