采用针状铁素体的管线钢具有较好的成形性能。
Pipeline steel adopting the spicular ferrite owns the better properties of forming.
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.
在过去几十年X 70级管线钢的典型组织一直是铁素体-珠光体。
In the past decades of years the typical structure of pipeline steel X70 was the ferrite-pearlite.
简要介绍了宝钢试制的以针状铁素体组织为特征的X80级管线钢热轧板卷。
It represents the trial manufacture of grade X80 pipelines steel hot rolled coil with characteristic of acicular ferrite at BaoSteel Mill.
以多边形铁素体为主的管线钢的强度不符合西气东输二线管道工程的技术要求。
However, X80 pipeline steel with PF as main morphology does not meet the specifications of the Second West-East Gas pipeline Project.
采用七种高纤维素型立向下电焊条，通过斜y坡口裂纹实验，对高强管线钢的冷裂敏感性进行实验研究。
The cold cracking sensibility of high tensile pipeline-steel was studied by Ygroove cracking test using seven kinds of high cellulose electrode of vertical down position welding.
由于低屈强比和组织均匀，管线钢采用针状铁素体组织可以具有较好的（管）成型性及耐腐蚀性。 用针状铁素体管线钢平板或卷板制造的焊管的力学性能彼此相差不大。
Pipeline steel adopting the spicular ferrite owns the better properties of forming and anti corrosion for its low ratio of yield strength and tensile strength and uniform microstructure.
采用合适的TMCP工艺，可以在低碳合金管线钢中获得不同组成比的针状铁素体复相组织。
By using appropriate TMCP process, complex phase of acicular ferrite with different compositions could be obtained in low carbon alloy pipeline steel.
采用合适的TMCP工艺，可以在低碳合金管线钢中获得不同组成比的针状铁素体复相组织。
By using appropriate TMCP process, complex phase of acicular ferrite with different compositions could be obtained in low carbon alloy pipeline steel.
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