2) vapor pipeline buried by steel with steel directly
钢套钢直埋蒸汽管道
1.
Constructive technology of vapor pipeline buried by steel with steel directly;
钢套钢直埋蒸汽管道施工技术
3) direct embedment steel steam pipe with steel jacket
钢套钢蒸汽直埋管道
4) direct buried steam pipeline
直埋蒸汽保温管
1.
The application of construction technology of sliding type direct buried steam pipeline;
内外滑动型直埋蒸汽保温管施工技术应用
5) steamy thermal insulated direct-buried pipe
蒸汽直埋保温管
6) steam pipeline with steel sleeve
蒸汽管道钢套管
补充资料：直套
1.耿直。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条