Irin ati irin bi Hunan Nla Irin Pipe ká akọkọ owo, iṣelọpọ Ere irin awọn ọja ati ki o kan ga fi kun iye ati ki o fosters mẹta pataki awọn ọja isori, eyun erogba, irin, alagbara, irin ati ki o pataki irin.Specific awọn ọja: carbon seamless, irin pipe,erw irin pipe,ssaw irin pipe, lsaw, irin pipe, casing, ọpọn, iho paipu, ṣofo apakan, pipe paipu bbl