承压管

• Prestressed concrete pressure pipes , cylinder and non - cylinder , including joints , fittings and specific requirement for prestressing steel for pipes ; german version en 642 : 1994
  带和不带薄板套的预应力混凝土承压管:包括管连接件
• Prestressed concrete pressure pipes , cylcinder and non - cylinder , including joints , fittings and specific requirement for prestressing steel for pipes
  包括接头和配件的圆柱型和非圆柱型预应力混凝土承压管及管用预应力钢的具体要求