介绍一种由圆形焊管变矩形焊管的设计及计算方法。
A design and calculated method which transforms round welded pipes into rectangular welded pipes is introduced.
用该钢带制造的集装箱方矩形焊管完全可满足用户要求，可替代同品种的热轧卷板。
The square and rectangular tube of handling container by SPA-H strip can be meet the requirement of custom, and same assortment hot rolled coil strip can be replaced by it.
为改变这一现状，国家提出国内焊管行业开发集装箱用方矩形高频焊接钢管的计划。
In order to change the situation a plan to develop square H. F. welded pipe used in container has been put forward.
中径电阻焊管生产线，用来生产圆管、方管和矩形管，起始原料是根据BTM 520标准的76- 165 mm的热轧和冷轧钢卷。
ERW pipe and profile machine complete line to manufacture, round square and rectangular pipes. install and start the BTM520 (76-165mm) hot and cold rolled steel coils.
中径电阻焊管生产线，用来生产圆管、方管和矩形管，起始原料是根据BTM 520标准的76- 165 mm的热轧和冷轧钢卷。
ERW pipe and profile machine complete line to manufacture, round square and rectangular pipes. install and start the BTM520 (76-165mm) hot and cold rolled steel coils.
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