Low-density polyethylene pipes for sprinkler irrigation (hereinafter referred to as pipes) are circular-section plastic pipes obtained by extruding low-density polyethylene resin with (or without adding) carbon black. Mainly used for sprinkler irrigation, drainage irrigation and other water conservancy, hydropower, etc.
QB/T 3803-1999 history
1986QB/T 3803-1999 Low density polyethylene (LDPE) pipes for sprinkler irrigation