20-10-2012, 05:29 PM
Engineered Tubular Solutions
Pennar CDW ERW Brochures.pdf (Size: 1.4 MB / Downloads: 138)
Engineering India
Pennar Industries is a multi-product, multi-location enterprise manufacturing a wide
range of value-added sheet metal products which include:
• Cold roll formed steel profiles • Engineered components
• Railway Wagon & Coach Profiles • Fabricated steel products • Precision tubes
• Cold-rolled strips • Pre Engineered Buildings • Sheet piles
These products are made from diverse raw materials such as stainless steel, corten steel,
pre-galvanized / galvalume / pre-colour coated steel, mild steel, and structural steel
in St-42/52 grades.
The products find application in diverse industries such as:
• Railways • Automobiles • Building & Construction • Pollution Control Equipment
• Infrastructure • Heavy Engineering • Road Safety Systems • General Engineering
Pennar along with its subsidiary, Pennar Engineered Building Systems, have sales
of ` 1375 crores in FY’ 11 and plans to achieve a sales turnover exceeding ` 2000 crores
in three-years time
Raw Material Preparation
The raw material required for tube making is a steel strip which
undergoes various stages of processing. HR or CR strips in the form
of coil is procured from indigenous steel makers or from import
sources and are used in the manufacture of a tube depending on the
application.
Manufacturing begins in a separate preparatory section where the
strip is slit into required width depending on the diameter of the tube
& subjected to acid pickling process to remove all rust and scale in an
ultra modern strip pickling plants.
Separate in-house cold rolling mills also cater to raw material
requirements for closer dimensional tolerances and bright surface
finish of tubes.
Quality Assurance
At Pennar, Quality Control is an integral
part of the manufacturing process. It
begins at the raw material stage where it
is inspected for chemical composition and
tested for other parameters like mechanical
properties, gauge variation, etc.
In process Quality Control is carried
out through both destructive and nondestructive
tests for weld integrity.
Destructive tests such as drift expansion
test, flattening test and crushing test are
done on-line and off-line. Non-destructive
eddy current testing and pressure testing
along with magnetic crack detector are
carried out as specified by the customer.