Jotindra
Steel & Tubes Ltd - JST, is pioneer
among Steel Tube manufacturers in India & was founded
in the year 1967.
Jotindra is Currently among India's foremost
manufacturers and exporters of Electric Resistance Welded
steel tubes and pipes. Jotindra's reputation for impeccable
quality and total reliability has been hard earned and the
concomitant result of conscious effort and single-minded
dedication and adherence to standards which has endured
nearly 40 years in the Indian and international markets.
A motivated and fully-trained workforce,
dedicated to continous quality improvements ensure that
each pipe turned out in 90,000 MT annual productions is
fit to bear the imprimatur of our organisation with pride.
Our pipes are instantly recognised in the market by their
unique tensile strength and dimensional uniformity. We take
care that the elongation is sufficient for consummate bending
without sacrificing in the least the strength and toughness
of our pipes.
Our top drawer quality steel pipes are
manufactured in mills that are fully
automated to ensure highest quality and
complete soundness. Total Quality Management practice is
ingrained in the organisational structure. JST's mills has
ISO 9001:2000 certification from Bureau
Veritas and has on-line quality inspection
designed and approved by Bureau
Veritas.
Quality control is thus a continuous process
and culminates in the integration of efforts directed at
the development, maintainence and improvement of quality
at each production level. We inspect each and every single
pipe for pinholes and random checking of samples is conducted
for accurate thickness, zinc coating, length etc., so that
we are proud of each pipe which leaves our premises.
The techniques adopted in manufacturing
and quality control include:
We use an Electric Resistance Welding procedure known as High Frequency Induction
Welding which uses the parent
metal to fuse the edges thus maintaining same chemistry
in the final product with only a fractional change in grain
structure. This is coupled with an online Seam
Annealing system to uniformly balance the
grain structure. Thermatool
Welding ensures the integrity of the product.
Debeading is practised to be able to trim the internal bead of pipes
in height to meet specific customer's requirements.
JST manufactures pipes meeting the following
standards relevant to the product :
Indian Standards
: Specification IS : 1239 (Part-I) 1990
(Light, Medium & Heavy Series) Black & Galvanized,
Plain end/screwed and socketed.
Indian Standards
: Specification IS : 1161-1998 grade YST
- 210 and YST - 240.
Indian Standards
: Specification IS : 3601 - 1984 upto 168.3
mm OD and 7.1 mm wall thickness.
Indian Standards
: Specification IS : 4270 - 1992 ERW Steel
Tubes for water wells.
British
Standards : Specification BS : 1387 - 1985 (Light, Medium & Heavy
Series) black & galvanized, plain end/screwed and socketed.
British
Standards : Specification BS
: 1139 - 1990, Steel Tubes for mechanical
structural and general engineering purpose.
American
Standards : A53
JIS : G
3444 ALL GRADES
Kenya Standards
: KS259:1998
EN 10 025 GRADES S235JRG2 &
S275JR