roasting

In light of the constructing experience of the Jingbian-Xi'an Natural Gas Pipeline Project, a discussion is made of the types and causes of cracking of bent pipes in the process of fire bending and the preventive measures are proposed.

结合靖边—西安天然气输气管道工程建设的施工经验,阐述了控轧钢频热煨[制]过程中弯管开裂的类型、原因,提出了相应的防止措施,对完善我国现行的钢制弯管生产标准、检验方法提出了看法。

Through consulting the literatures about baking method,to put up statistics and analysis about the study actuality of baking method.

通过查阅有关煨[制]法的文献,对煨[制]法的研究现状进行统计分析;并结合有关川木香的历代文献记载,对川木香的煨[制]法研究现状进行综述,这将对川木香的合理开发、临床应用等具有指导意义。

0 m ,whose main chord pipes of trusss articulations is processed with new heat- treating technology,this paper introduces the equipments, theory,traitof technology and operating essential of main chord pipe heat- treatmentof trussofsteal tubulararch.

0 m上承式钢管砼桁架无铰拱桥 ,钢管拱桁架节段采用煨弯新技术于工厂内加工制作而成。