This specification covers factory made PTFE lined metal pipe, fittings & valve primarily intended for conveying corrosive fluids.

All the technical specifications of our PTFE / PFA / FEP lined piping systemS generally exceeds the relevant ASTM F 1545-95 Standard specifications. This specification covers ANSI 150# PTFE lined pipe & fittings in nominal diameter from 25NB to 300NB.

Marerial of Construction: CS PTFE / PFA / FEP lined

Pipe & Fittings material : ASTM A106 Gr.B, in compliance with ANSI B 36.10. According to schedule 40 from 25NB to 150NB, schedule 30 from 200NB to 250NB & schedule 20 for 300NB.

Flange material: IS 2062 Gr.B ANSI B 16.5, ASA 150# for drilled holes

Valve body material: WCB casting as per lS-1 030

SS304 casting as per ASTM A351 gradeCF8

SS316 casting as per ASTM A351 gradeCF8M

PTFE liner for pipes: Isostatically molded liner with even pressure throughout the length, molded from standard resin as per ASTM D 1457, white color.

Lined fittings: Fittings are insitu molded in PTFE by isostatic molding process molded from standard resin as per ASTM D1457.

Lined Valves: Valves are lined with PTFE / PFA / FEP

Lining material- Resin Type

Standard Resin Specification Standar LinerColor

PTFE Polytetrafluoroethylene ASTMD1457 White

PFA Perfluoro [Alkoxyalkane] copolymer ASTM D 3307 Natural

FEP Perfluoro [Ethylene-Propylene] copolymer ASTM D 2116 Green

Lining Thickness: 3 to 8 mm from 25NB upto 300NB depends on size & location

Standard for Pipe: Collared ends with backing flange as per ANSI B16.5 ASA 150#, one end loose flange and other end fixed flange.

Standard for fittings: All fittings are with fixed welded flanges, loose flanges can be offered on extra cost.

Vents holes: Each pipe having two vent holes that will release any pressure between the liner and the housings.

Tolerance for pipe lingth : + 3.2 mm

Tolerance for flange bolt hole : + 1.6 mm

Inspection and testing : Pipes and fittings are tested with a non destructive high voltage tester at an output voltage of 10KV and hydrostatic pressure test at 10 Kg/cm2, ball valves are tested at air pressure of 2Kg/cm 2

Pressure rating: Vacuume to 6 kg/cm 2

Temperature rating: - 29°C to 260°C

External finish : Pipes and fittings are paint externally by red oxide primer and valves are paint externally with two coats of paint

Bore size (ID), flare diameter and flange thickness:

Packing : Both ends of pipe are packed with good quality ply tightened with set of nut and bolts, fittings are packed with corrugated paper packing.