加热炉用钢管 JIS G3467STFA410  GB9948 20#STFA23ASTM A200 T11  STFA24ASTM A200 T22  STFA25ASTM A200 T5 GB9948 1Cr5MoSTFA26ASTM A200 T9  压力管通用碳素钢管 JIS G3454STPG370
(STPG38)ASTM A53ADIN 1629 ST35GB8163 10#STPG410
(STPG42)ASTM A53BDIN 1629 ST45GB8163 20# 高温管通用碳素钢钢管 JIS G3456STPT370
(STPT38)ASTM A106ADIN 17175 ST35.8GB6479 10#
GB9948 10#STPT410
(STPT42)ASTM A106BDIN 17175 ST45.8GB5310 20G
GB6479 20G