重庆20#碳钢无缝钢管

In January 21st,CISDIgroup received thenotice about"science and technologyfor the year 2012National EngineeringTechnology Research Center oftheMinistry of science and technologyof nationalacceptance"(National Science and[2012]1215),announcedonCISDIcompanyestablished nationaliron and steel smeltingequipment system integrationengineering technology research centersuccessfully passed theMinistry of Science and technologyof comprehensive appraisalacceptance,acceptance ofthe totalresults ranked secondin 14enterprises of the countryto participate in the inspectionof theNationalEngineering Research Centerforexcellentachievements,acceptance.百科名片

无缝钢管是一种具有中空截面、周边没有接缝的圆形，方形，矩形钢材。无缝钢管是用钢锭或实心管坯经穿孔制成毛管，然后经热轧、冷轧或冷拨制成。无缝钢管具有中空截面，大量用作输送流体的管道，钢管与圆钢等实心钢材相比，在抗弯抗扭强度相同时，重量较轻，是一种经济截面钢材，广泛用于制造结构件和机械零件，如石油钻