Also the article intr oduces the developing trend of linepipe and laser welded pipe abroad for referen ce of domestic welded pipe market demand , production status and technology dev elopment.

• 还就国外焊管在管线钢管和激光焊管等方面的发展趋势特点作了介绍。对了 解国内焊管市场需求、生产现状及技术发展有一定的参考作用。