"Chengchen" brand Siphon Rainwater Pipes (HDPE Siphon Special Drainage Pipes) are made from domestic or imported high-density polyethylene (HDPE) materials, produced according to a 100% pure new material formula and CJ/T250-2007 standards. The pipes have smooth inner and outer walls, even wall thickness, good rigidity, and excellent toughness. The quality fully meets industry standards! They can meet the requirements of siphon rainwater drainage systems for any large-span roof structures. Available sizes: 56, 63, 75, 90, 110, 125, 160, 200, 250, 315.

Our company specializes in manufacturing various specifications and types of siphon drainage plastic fittings, siphon drainage pipe clips, and fixed system accessories, as well as 304 stainless steel siphon rain heads and Type 87 rain heads. All materials meet or exceed industry standard requirements.