ASTM A860, ASTM A182, ASTM A336, ASTM A335, ASTM A387, zilizopo za chuma na bomba, vifaa vya bomba la chuma, sahani za chuma na karatasi, bar ya pande zote, flanges za chuma, vifuniko vya chuma, vifungo vya chuma, vifuniko vya ek, vifungo vya esc, vifungo vya esc, tes. Wewe
- Zhengzhou Huitong Equipment Equipment Co, Ltd.