prestressed concrete cylinder pipe  PCCP管

prestress cylinder concrete pipe PCCP  预应力钢筒混凝土管道PCCP

pre-stress cylinder concrete pipe(PCCP)  预应力钢筒混凝土管道(PCCP)

pre-stressed concrete cylinder pipe PCCP  预应力钢筒混凝土管PCCP; 预应力钢筒混凝土管道

pre-stressed concrete cylinder pipe(PCCP)  预应力钢筒混凝土管(PCCP); 预应力钢筒混凝土管道(PCCP)

Core type prestressed concrete pipe for water  预应力混凝土输水管

Large diameter prestressed concrete pipe  大直径预应力砼管

Large-diameter Prestressed Concrete Pipe Pile  预应力混凝土大直径管桩; 预应力混凝土大管桩

Prestressed Concrete Cylinder Pressure Pipe  预应力钢筒混凝土管材PCCP

PRESTRESSED CONCRETE PIPE PILE  预应力混凝土管桩; 预应力管桩

prestressed concrete pipe pile with the concrete c  填芯预应力混凝土管桩

Prestressed Concrete Pipe Piles  预应力管柱; 预应力管桩

Prestressed Concrete Pipe-Pile  预应力混凝土管桩; 预应力管桩

Prestressed Concrete Pipe-Piles  预应力管桩

prestressed-concrete cylinder  预应力混凝圆筒

Pre-stressed Concrete Cylinder Pipe  预应力钢筒混凝土管道

a prestressed concrete system  预应力体系

Bonded Prestressed Concrete  有粘结预应力混凝土

Bonded Prestressed Concrete Structure  有粘结预应力混凝土结构