MATERIALS

CARBON STEEL

• Always used painted or lined. Ideal for structural purposes such as stoplogs, filter shells, bar racks, rotation screen structures etc.     

• Cathodic protection is recommended in salt water.

• High-tensile varieties are used for mechanical components.

 

​AUSTENITIC STAINLESS STEELS

• Good corrosion-resistance in fresh water (AISI 304L) or salt-water (AISI 316L). Very vulnerable to stagnant water and hydrogen sulfide (H2S).

• Used for the same parts as carbon steel.

• Unsuited for mechanical applications.

• Easy to protect with cathodic protection.

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DUPLEX STAINLESS STEEL

• Excellent corrosion resistance.

• Very high tensile properties, can be used for all filter and screen components.

• However, acceptable voltage range in the case of impressed current cathodic protection is very narrow, especially in combination with carbon steel.

 

​SUPER-DUPLEX STAINLESS STEEL

• Near-perfection corrosion resistance in seawater.

• Very high tensile properties.

• Very sensitive to impressed cathodic protection settings.

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​GLASS-REINFORCED POLYESTER (GRP)

• Used for pipework, covers and guards.

• Totally corrosion-free.

• Other composites are used for NoclingTM mesh, rollers, jet nozzles, bushes and other fittings.