PILGERING

• Cold Pilgering process using full link die and tapper mandral
• To reduce the cross section  by upto 90% because the process relies on large number of small forming steps
• Cold Pilgering and are longitudinal cold rolling process that reduce the diameter and wall thickness of metal tube in one process step
• By cold Pilgering process surface finish achieved matter than cold drawing finish (Less than 0.4 micron) and improved microstructure grain size.
• Our pilgering range are OD12 to 73mm and wall thickness 0.8 to 4mm

COLD DRAWING

• In cold drawing process raw material tubes are coated with some special chemical or applied some special lubricant oil.
• The tubes are pulled through tungsten carbide die and flotting/fixed plug inside the tubes, resulting in reduced tube diameter and wall thickness corresponding increases in tube length
• Our capacity of drawing are OD 6 to 609.6mm & thickness are 0.8 to 12mm.



Grades
300 series : 304,304L,316,316L,317L,321,347H,310
400 series : 409, 409L, 410,430

Standards
Conforming to international specifications of
ASTM A-213, A-249, A-269, A-312, A-358, A- 688 and its equivalents in ASME, DIN, NFA, JIS etc.

These pipes are used in :

• Heat-exchangers
• Condenser
• Boiler
• Economizers
• Super-heater
• Pre-heater
• Oil coolers


Sizes



Products	Size / Range
Heat Exchanger Tubes	10.00 mm to 50.80 mm OD
Instrumentation Tubes	6.00 mm to 25.40 mm OD
Pipes	1/8" NB to 24" NB


Specification



Products	Specification
Heat Exchanger Tubes	ASTM A-213, A-268, A-269, A-270, A-789 DIN -17456 & 17458 ( Class -1) U tubes as per customer's drawing.
Instrumentation Tubes	ASTM A-213, A-269, DIN -17456 & 17458 ( Class -1)
Pipes	ASTM- 312, A-790