深圳152*8mm的中低压锅炉管销售厂家|146*12mm的20G高压锅炉管 价格行情走势

102×4.5-5-6-7-8-10-12-14-16-20

108×4.5-5-6-7-8-10-12-14-18-20-22

114×4.5-5-6-7-8-10-12-14-18-20

121×4.5-5-6-7-8-10-12-14-16-20

127×4.5-5-6-7-8-10-12-14-16-20

www.myhejinguan.com             www.316lbuxiugang.com