Products for Railways

Based on our experience so far, technical literature available and various papers presented by national and international experts in surface coatings the following are our recommended specifications of the products, which we wish to offer to Railways.

Rails OverHead Masts Bridges Wagons B.P.P.G.L. Wagons L.H.D. Coaches

Rails

The overall thickness will be around 250 microns.

The above system is likely to offer Salt Spray Resistance in excess of 5000 hours and expected to a give life of 5 years.

Important parameters considered

Very low permeability (around 0.004 grams per hour per mil per sq.mt.) Excellent Adhesion Sufficient Flexibility (to with stand high degree of vibrations) Very high scratch hardness (round 4 kg.) high resistance to erosion

OverHead Masts

The Overall thickness will be around 270 microns.

The important parameters considered

Very low permeability (0.004 grams per hour per mil per sq.mt.) Excellent resistance to corrosion and erosion Excellent resistance to UV and Weather The system will offer 5000 hours salt spray and expected to last 5 years

Bridges

We have considered Pamban Bridge where the corrosion is highest.

Manual cleaning to remove loose rust dirt and other muck.

Soft water washing to remove the deposits of chlorides and other salts.

One coat of APUS Cured Clear (SPPL/IR-ACC 30) Two coats of APUS Cured Tar (SSPL/IR-ACT) Two coats of Urethane Based Ceramic Coating (SSPL/IR-CERCOAT)

The over all thickness will be 400-500 microns

Important parameters considered

Very low permeability (0.004 grams per hour per mil per sq.mt.)

Excellent resistance to UV and Salt fog.

The system is expected to give salt spray in excess of 5000 hours and expected to give a life of minimum 3 years in such hostile atmosphere.

Wagons

Interior

Manual cleaning to remove loose rust and other muck Two or three coats of 100% solids Elastomeric grade Polyurethane to the thickness of 2 mm-3 mm (SSPL/IR-ELASTO) One final coat of Aliphatic Clear (SSPL/IR-2 PK ALIPHATIC)

Important parameters considered

Very low permeability (0.004 grams per hour per mil per sq.mt.) Very high resistance to impact and point loads Very high resistance to erosion and weather

Exteriors

Manual cleaning to remove loose rust and other muck One coat of APUS Cured Clear (SSPL/IR-ACC 30) One coat of APUS Cured Zinc (SSPL/IR-ACZ) Two coats of Urethane base ceramic coating (SSPL/IR-CERCOAT) One coat of Aliphatic PU Clear (SSPL/IR-ALIPHATIC CLEAR)

The overall thickness will be around 350 to 400 microns.

Important parameters considered

Very low permeability, excellent resistance to corrosion, erosion and UV.

B.P.P.G.L. Wagons

Interiors

Manual cleaning to remove loose rust and other muck One coat APUS Cured Clear (SSPL/IR-ACC 30) Two coats of APUS Cured Zinc (SSPL/IR-ACZ) Two coats of Polyurethane Finish (SSPL/IR-PU TOPCOAT)

The overall thickness will be 270 microns.

Important parameters considered

Resistance to LPG, ATF and Kerosene

Exteriors

Manual cleaning to remove loose rust and other muck One coat APUS cured Clear (SSPL/IR-ACC 30) Two coats of Polyurethane based MIO Primer (SSPL/IR-PUR MIO) Two coats of Aliphatic Polyurethane Finish (SSPL/IR-PU TOPCOAT) The overall thickness will be 270 microns The system will offer 4000 hours salt spray and expected to last for 5 years

Important parameters considered

Low permeability

High Flexibility

(To withstand expansion and contraction on account of temperature variations and weather conditions)

L.H.D. Coaches

Exteriors

Manual Cleaning to remove loose rust and other muck One coat of Apus Cured Clear (SSPL/IR-ACC 30) One coat of Polyurethane based Primer (SSPL/IR-PUR 2 PK) Application of Putty (optional)

The important parameters considered

Corrosion and erosion resistance

(It is expected to give salt spray of 4000 hours and expected to last for 4 years).

High Scratch Resistance (in excess of 4 kgs.)

Very low permeability (0.004 grams per hour per mil per sq.mt.)

Interiors

Manual Cleaning to remove loose rust and other muck One coat of Apus Cured Clear (SSPL/IR-ACC 30) Two coats of Polyurethane based Primer (SSPL/IR-PUR 2 PK) Putty (optional) Two coats of Polyurethane Finish (SSPL/IR-PU Top Coat) The overall thickness will be around 270 microns The system will pass around 3000 hours salt spray and expected to last for 5 years Important parameters considered Very low permeability (0.004 grams per hour per mil and per sq.mt.) High Corrosion Resistance High flexibility (to with stand expansion and contraction due to temperature and weather conditions)

Coach Top (Pantograph coating)

Manual cleaning to remove loose rust and other muck One coat of Apus Cured Clear (SSPL/IR-ACC 30) Two coats of Polyurethane based Ceramic Coating (SSPL/IR-CERCOAT) One coat of Apus Cured Coal Tar Optional (SSPL/IR-ACT) One coat of Aliphatic Polyurethane Aluminium (SSPL/IR-ACAL) Over all thickness will be around 250 microns The system will give 5000 hours salt spray and expected to last for 5 years

Important parameters considered

Corrosion resistance

Low permeability

Very good dielectric strength

Under Carriage

Manual cleaning to remove loose rust and other muck One coat of Apus Cured Clear (SSPL/IR-ACC 30) Two coats of Apus Cured Clear Zinc (SSPL/IR-ACZ) Two coats of Apus Cured Clear Tar (SSPL/IR-ACT)

The overall thickness will be 270 microns and will offer 5000 hours salt spray and expected to last for 5 years.

Important Parameters considered

Very low permeability (0.004 grams per hour per mil and per sq.mt.) Resistance to corrosion and erosion Flexibility to withstand vibrations