... coupling for heating pipe 1.material:PE-RT,LG 2.size:16*20,20*25,20*32,32* ... :any color 4.Do OEM PE-RT reducing coupling for heating pipe 1.material:PE-RT,LG2.size:16*20,20*25 ... ,20*32,32*253.color:any color4.Do OEMApplication ... such as the beverage, milk, etc. in food industry. PE-RT reducing coupling for heating pipe