用“JCOE”造句大全，JCOE造句

Bauschinger Effect of JCOE Longitudinal Submerged Arc Welding Steel Pipes;

介绍了巨龙钢管有限公司大口径JCOE直缝埋弧焊管生产线研发情况，以及该生产线生产的直缝埋弧焊管在西气东输工程等重大管线中的使用效果；

The Modification to Inside Weld Grinding Machine for JCOE Formed Longitudinal Submerged Arc Welded Pipe

This article describes the whole process of JCOE longitudinal submerged arc welding pipe made from rolling plate.