... 2. standard: ASTM A500,EN10219,EN10210 3. origin:Tianjin,China 4. Will Xu Tianjin Yuanlitai Steel Pipe Co., Ltd.Our Steel Pipe ... XuAddress:North side of shunmingtun village,xizhaizhuang town,Jinghai County, Tianjin City, P.R. ChinaTelephone:0086-22-59526228Fax:0086-22-59526228 Mobile008613682110602Only ...