公司主营无缝钢管、美标（ASTM）、日标（JIS）、德标（DIN）及API5L、ERW各种型号和规格无缝管、焊管及管件。
Our company mainly products seemless steel-pipe, ASTM, JIS, DIN, API5L, ERW and all kinds models and specifications of seemless steel-pipe, welding pipe and fitting.
公司主营无缝钢管、美标（ASTM）、日标（JIS）、德标（DIN）及API5L、ERW各种型号和规格无缝管、焊管及管件。
Our company mainly products seemless steel-pipe, ASTM, JIS, DIN, API5L, ERW and all kinds models and specifications of seemless steel-pipe, welding pipe and fitting.
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