The square and rectangular tube of handling container by SPA-H strip can be meet the requirement of custom, and same assortment hotrolled coil strip can be replaced by it.
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。
2
The general occurrence and distribution of internal surface hollow and hole defect of hot continuous rolled seamless tube are introduced.
介绍了热连轧无缝钢管内表面凹坑、孔洞缺陷的基本形式和分布规律。
3
Hot-rolled seamless steel tube column, as the main vertical load-bearing member, plays the role of structure transferring between the cast RC frame shear wall and the steel roof truss.