... : 6,8,9,12mDiameter: 8mm-32mmTianJin JIANGHAILONG steel Co.,Ltd, was founded in 2000, specializing in international project and ... steel seamless pipes and seamless pipes, Tianjin Hangtuolitai Trade Co., Ltd. is an excellent enterprise for major steel pipe plants. We ... have cooperated with Tianjin Seamless Steel Tube Plant, ...