... tube 16.00-20 1.Wear and heat resistance 2.Certificate: CCC ISO GCC 3.timely delivery QINGDAO HUIFUXIN ... 8.30-22, 8.30-24, 9.50-24, 11.2-24, 11.2-28, 11.2-38, 12.4-24, 12.4-28, 12.4 ... -38, 13.6-24, 13.6-28, 13.6-38, 14 ... 24, 14.9-26, 14.9-28, 15.5-38, 16.9-24, 16.9-28, 16.9-30, ... , 1000-20, 1100-20, 1200-20, 1200-24OTR: 1400-38, 1400-20, 1400-24, 1600-24, 1600-25, 17 ...