???The?ompany?nvested?20?illion?uan?nd?0?illion?uan?espectively?o?ntroduce?omestic?dvanced?igh?requency?elding?quare?nd?ectangle?ipes?roduction?ine?nd?traight?eam?ubmerged?rc?elding?ipes?roduction?ine.?

our products:ERW large diameter square and rectangular tubes,LSAW steel pipes.

???We?ave?ur?wn?atent?nd?tility?atents,?amely,?eed?oller?evice?f??elder,a?ultiply?aliber?oundness?orrection?nit,a?ubmerged?rc?elding?ipe?utt?oint?evice???igh-frequency?elder?queeze?oller?djusting?rive?et?a?illing?achine?utomatic?in?a?roduction?ine?f?old-formed?teel?hearing?utt?entering?evice?