... The main products of our company for the seamless steel pipe and welded steel pipe are divided into two categories: The production of ... T8163, T3087, 10#20# specification 1/ 2" -34", SCH10-SCHXXX wall thickness. 1 general purpose of seamless steel pipe ASTM A53GR.B ... : flat, chamfer, brush paint brush with cap, oil, steel, printing, binding, and woven bags. As we are specialized in the production ...