Gravel pre-packed wedge wire screens consists of two screens or multilayer screens
and the stuffing between the screens. Perforated pipe inside and Johnson type screens/wedge wire screens outside.
The base pipe can be made of casing pipes, seamless pipe or welded pipe.
1. Gravel pre-packed wedge wire screens consist of two screens or multilayer screen
2. Perforated pipe inside ,with perforations wrapped by the outside Johnson type screen
3. The screen jacket and base pipe are welded together with a length of coupling.
4.The base pipe can be made of seamless pipe or welded pipe, and more often, casing pipes.
Specifications of gravel pre-packed wedge wire screens
Material: 201 304 304L 316 316L Q235
Another name: Pipe base screen
Screen jacket: Johnson type screen
Base pipe: Perforated pipe
Connection type: STC, LTC,BTC threaded
Bubble bag, wooden pieces wrapped the Johnson screens