PP-R4228冷水管,0.35大庆炼化12100PP-RB8101冷水管,0.36燕山石化13000PP-R***220热水管,0.36燕山石化12700PP-RPA14D-1热水管,0.33大庆炼化11600PP-RR200P挤塑管材，0.2-0.4韩国晓星13000)