supplyanGB/T9711 Q345B welded steel tube for nature gas industryseamless Welded steel pipe Standard:GB/T3091, GB/T3092, GB/T9711, ASTM A53, BS1387, ASTM?A120 API 5L Material: Q195,Q235B,Q345B Outside
Diameter:1/2
Post by Wenjun Peng Construction & Real Estate @2013-03-29 12:18:25