The PTFE or PFA lined pipes spools and the PTFE elbows, tees, reducers, crosses, spacers are recognized as the ideal solutions for conveying or processing highly corrosive fluids under severe conditions. It acts as an anticorrosive layer even at temperature exceeding 230* C.

The Carbon Steel PTFE Lined Pipe has high thermal ability and flame resistance because of the coating as well. Since these are corrosion resistance to the extreme levels, they are compliant with food grades.


PTFE coating can be done on various products such as PFA Lined Pipe, PTFE lining rubber expansion joint, Teflon Lined Carbon Steel Pipe & PFA Coated Pipe Fittings. The PTFE Lined Piping has an electrical insulation because of the coating. It cancels out conductivity of the metal pipes by avoiding contact with electric current.

Teflon is most known for its use in the cookware due to its non-sticky nature. So the non-sticky, temperature resistant, one of the least reactive material. it is used in Teflon Lined Pipe expansion joints to make similar connections. Teflon PFA Coated Pipe Fittings are used along with the PTFE coated piping.


They are extremely resistant to corrosion
Longer lasting than the average steel pipes
Allows chemicals to flow much more smoothly
High pressure and temperature resistance
High permeability resistance

Inspection and Tests

Hydrostatic Pressure Test: All Piping products are tested for 150% of maximum recommended working pressure. Test pressure reaches in 1 minute and maintained for 3 minutes.

Electrostatic Test: All Lined products are tested with non-destructive high voltage tester at an output voltage of 10 Kv. To detect lining in integrity or pin holes.

Visual Inspection: All finished products are visually inspected for any sports or cracks.

External Finish: All pipe and fittings are coated with Red Oxide or as per customer-specified coatings based on MOC content, manufacturing incompatibility, or other factors.

Technical Details

Design Features

PTFE/PFA Lined Pipes & Fittings
PVDF Lined Pipes & Fittings
PP Lined Pipes & Fittings

Temperature Range

PTFE/PFA: up to 250°C
PVDF: up to 150°C
PP: up to 100°C


Length & Centreline: + 1/8” Tolerance
Fixed Flange Bolt Hole Alignment: + 1/16” Tolerance
Flange Perpendicularity (with pipe centre line): 3/32 in/ft. of nom. Pipe diameter


Pipe: ASTM A 106 Sh. 40 or IS 1239 (Medium Duty)
Reducer: A 234 Gr. WPB Sh. 40
Tee: ASTM A 106 Sh. 40 (Fabricated from Pipe)
Elbow: A 234 Gr. WPB Sh. 40
Flange: IS 2062 drilled to ANSI B16.5 Class 150

The Unique Process

1. The lining process for Pipes positively locks the plastic liner in the metal pipe housing while effectively relieving stresses that could cause unwanted liner movement in service.

2. The liner is processed under controlled conditions to a size somewhat larger than the I.D. of the steel housing into which will be installed. It is then thoroughly inspected for conformance to specifications. Next, the liner is subjected to a battery of quality tests designed to ensure liner integrity.

3. The liner is then drawn through a sizing die at carefully controlled draw rates which results in a calculated reduction in the outside diameter.

4. A programmed heating cycle relaxes the liner inside the steel housing, resulting in a sung liner fit. Design allowances are incorporated in this procedure to eliminate undesirable stresses in the finished product.

5. Both liner ends of the pipe spool are then hot flared. Temperature, time and pressure are carefully monitored.

6. The finished pipe is then tested in accordance ASTM F1545 standards.

7. This unique lining process provides lined pipe with dimensional stability under vacuum, pressure, and thermal cycling conditions, which prevents liner buckling and cracked flares within operational limits.

8. All fittings are lined by automated Transfer/ Injection moulding process.


• Chlor-Alkali / VCM
• Silicones
• Chlorofluorocarbons: Refrigerants/Cooling Systems
• Poly silicon: High-Purity for Solar Cells
• Polyurethanes: TDI-MDI
• Brominated Compounds: Fire Retardants
• Titanium Dioxide Refining
• Halogenated Butyl Rubber
• Agricultural Chemicals: Pesticides and Weed Killer
• Pharmaceutical: Organic Synthesis
• Water Treatment: RO, ION Exchange
• Mining: Hydro met (Nickel, Copper)
• Pulp and Paper: Bleaching
• Ultrapure Systems
• Phosphate Fertilizers
• Power Plants: Flue Gas Desulfurization, Coal Ash Slurries, & Water Treatment