Sell Aluminium access concave cover with frame

Aluminium access concave cover with frame You May Also Be Interested In: access cover concave or manhole covers stamping machine welding steel
Our new products:Aluminium access concave cover with frame. It's made from A0 aluminium plate, through argon arc welding.
Advantage: good seal, low price than cast or welding steel manhole covers; Easy open after a long time closed.
Our plant have professional equipment to producing this beautiful products. Have 9 set of argon arc welding manchine,1 fold flex machine.2 cutting plate manchine,4 stamping machine.
Our discription are as follow:
clear opening 400mmx400mm,500mmx500mm,600mmx600mm