Welded Water Well Bridge Slotted Screens Filter Tube for Slotted Well Filter

• Customization: Available
• Application: Chemical Industry, Construction Industry, Oil and Gas Industry, Water Treatment Plants
• End Connection: Plain End
• Model NO.: FL
• Length: Custom Length
• Outer Diameter: 8 inch
• Surface Finish: Varnish Coating
• Type: Welded Pipe
• Wall Thickness: Schedule 80
• Transport Package: Carton
• Trademark: FL
• Origin: China
• HS Code: 6810999000
• Production Capacity: 500000 Meters/ Season

Product Description

Product Description

 

Product Description
Bridge slot water well screen pipe:
The sand and gravel can't easily block the slot because of bridge slotted screen's special bridge slot design. Bridge type water well screen slotted pipe has great mechanical strength and water entering capacity. Meanwhile, bridge type water well screen slotted pipes use steel punching technology and rolled in many ways, so bridge slotted screen is light, cheap and easily operating. We use Computerized Numerical Control to punch the productive process, so the slot size can be changed as your requirements. In order to give customers more convenience, we can offer any diameter bridge type water well screen slotted pipe, we also offer galvanized bridge slotted screen pipes to prolong the operational life.
Product Parameters
Basic material----
Stainless steel, different qualities depending on ground water properties and temperature.
Steel - mild steel, preferably S235JR or similar steel with good weldability properties. Suitable for drawdown wells. Not approved for drinking water.
Steel - galvanized, S235JR as base material. Only suitable to a limited extent for contact with drinking water.
Steel - coated plastic , S235JR as base material, Rilsancoated, approved for drinking water. Meets the KTW recommendation of the German Federal Department of Health.

The slot width tolerance compliant to DIN is +/- 0.2 mm,

which means the values listed above for the open area are

approximate values.
 

Approx. 2 mm minimum opening for galvanized and

Rilsan-coated screens, since the bridge openings

could otherwise plug due to the coating process.

Selection of slot size
Aquifer classification	gravel	Rough sand	Medium sand	Fine sand	Mealy sand
Screening results (mm)	1-2.5	0.5-1	0.25-0.5	0.1-0.25	0.1-0.25
Bridge slots (mm)	3	1.5-2	1	1	0.75
Filling gravel spec (mm)	4-20	2-8	2-3	2-3	2-3
Filling gravel thickness (mm)	75-100	100	100-200	100-200	100-200

Types-----

The different type of Bridge slot screen pipe
Diameter(mm)	146	159		219		273			325			377			426			529
ID(mm)	130	140	138	200	198	254	250	246	305	300	297	357	350	346	406	400	398	502	500	498
Thickness(mm)	5	5	6	5	6	5	6	8	5	6	8	5	6	8	5	6	8	6	7	8
Coupling OD(mm)	146	160	162	220	226	274	278	278	325	328	329	377	378	379	426	428	432	529	530	531

Connections
Selecting the best connection----

 

The choice of connections largely depends on technical re

quirements such as tensile strength, collapse resistance, and

installation guidelines for construction sites.

In addition, the outer diameter of the respective connection

should be considered also, which is larger than the pipe

diameter.

Our Advantages

1. High strength through resistance to twisting, compressive, and tensile forces 
2. A smooth bore that does not impede the passage of probes, tools, etc. 
3. Formations with large particle sizes
4. Large diameter wells
5.  Low to medium flow rates   

Product scope of application