铁素体型钢的渗层厚度明显大于奥氏体型钢。
For ferritic chromium steel, its thickness of layer is greater than that of austenite chromium steel.
鉴于针状铁素体型管道钢具有优异的综合性能，重要高压输气管道应采用针状铁素体管道钢。
The acicular ferrite pipeline steels have the excellent comprehensive properties and should be used for the key high-pressure gas transmitting pipelines.
宝山钢铁股份有限公司开发研制的针状铁素体型X70大口径输气管线用板卷钢已应用于西气东输管线工程。
X70 steel coils of acicular ferrite microstructure for large diameter pipes were researched and developed at Baosteel. The products have been used in West-East Gas Pipeline Project.
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