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1. Brief Introduction
Johnson screen is composed of ribs (vertical ribs or support ribs) and V-shaped wire, adopting the advanced full contour welding fabrication process. Each intersection is connected by fusion welding, that it has strong structure, good mechanical performance. The continuous uniform stability of screen slots is controlled by the computer system.
The continuous slot formed by the V-shaped wires ensures a two-point contact between the particles and the slot, which minimizes clogging, and maintain smooth flow. Continuous slots ensure larger aperture ratio, larger flow area, and minimize underwater velocity of permeability, keeping sands away from the pipes even in higher water pressure. Slot size can vary according to difference service.
2. Parameter
2.1 Basic Data
Slot(mm):up to 25, 0.025 for minimum, available for fabricate according to customer`s requirement or site condition.
Opening ratio: opening area can be up to 60%
Material: low carbon steel, low carbon steel galvanized, stainless steel(304,316L, 321 etc.) Special material or alloy material is available for customers` requirement of special service.
Length (mm): max available length is 6000
Nominal diameter (mm): up to 1200, 25 for minimum
Connection: groove butt welding connection or threaded connection
Applicable code: contour welding stainless steel pipe (SY5182-87)
Specification and size is customized
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