Hebei qinyi steelpipe sales co.,ltd. Wich was established in china's largest pipeline equipment manufacturing base-hebei yansan in2002,as a stock joint enterpise,produces seamless steel pipe(sizerange:9/8"-8");welded steel black and galvanized water and gas pipes(size range:3/8"-48");square and rectangular hollow sections(size range:10x10mm-1200x1200mm);industrial tubes(size range:13mm-219.1mm);low pressure boiler and steam pipes with latest production technology,according to international standards.