We are a professional manufacturer of spiral weled steel pipes, we can supply ... Cangzhou Manier Import-Export Trading CO., LTD is a professional manufacturer & exporter of LSAW steel pipe, SSAW (spiral) steel ... Jinghai Development Zone, a well-known Steel City in China. If you have any questions, pls contact me without ... : +86-15226605670 astm a252 spiral welded steel pipe manufacturer in China