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Gongchi HDPE Corrugated Drain Pipe – Double Wall (Black Outside, Blue Inside)

Double-wall HDPE pipe for drainage. Corrugated shell + smooth blue interior.

Gongchi HDPE Corrugated Drain Pipe – Single Wall (Black)

Single-wall corrugated HDPE pipe for fast, reliable drainage in all terrains.

Gongchi PE Pipe Fittings

PE100 fittings for HDPE pipes. Full range of shapes, fusion-weldable, durable.

Gongchi HDPE Gas Pipe (Black with Yellow Stripe)

Safe HDPE gas pipe with yellow stripe. Flexible, durable, fusion-ready for buried use.

Gongchi HDPE Water Supply Pipe (Black with Blue Stripe)

Premium PE100 water pipe with blue stripe. Flexible, strong, safe for potable water.