
-
Cast steel stainless steel natural gas all welded direct buried ball valve q61f DN50 DN80 -
Cast steel blackened flange T / L three-way reversing manual ball valve q944f-16p DN -
Anti theft ball valve_ Zero torque self locking anti-theft ball valve magnetic anti-theft oil ball valve DN50 80 -
Hard seal ball valve_ Metal hard seal flange stainless steel hard seal O-type ball valve wear-resistant high pressure and high temperature ball -
Eccentric hemisphere valve_ Cast steel ball valve of 340 PQ side