quality assurance plan covers requirements for inspection, testing
of pipe fittings, valves and hydraulic and Pneumatic hoses.
plan is intended to supplement the minimum requirements of the
applicable codes and to be followed by the internal QA department,
at every stage of the manufacturing.
specification indicating special or additional requirements
from the customer shall addenda to this plan.
Inspector or their authorized inspection agencies inspection
/ check points
are also indicated. Additional check points if any shall form
addenda to this plan.
following codes in their latest edition shall form the basis of
manufacturing, inspection, testing and acceptance of pipe fittings
Inspection : All receiving raw material shall be inspected by
quality assurance dept. as a routine procedure prior to storing
. This inspection generally include followings.
of material identification markings with respect to Mill
of Mill Test Certificate with respect to the applicable
case of discrepancy observed in either identification markings
or in Mill Test Certificate, Check testing shall be recommended.
Testing shall be carried out at the independent laboratories
internal Batch no. shall be allotted against accepted raw material
and shall be hard punched on each material before storing.
stainless steel material shall be stored separately with colour
coding and away form carbon steel material
to avoid contamination.
Treatment of the fittings shall be carried out before or after final
Heat Treatment of the fittings
shall be carried out strictly as per the applicable codes.
CLEANING, PICKLING & PASSIVATIONS
completion of final machining, all fittings shall be cleaned internally
& externally to remove scale, dirt, sand, water & foreign
& External surface of all stainless steel fittings, shall
be pickled by acid & passivated by clean and cold water
and External surface of all brass fittings, shall be pickled
by acid and passivated by Brass Coat or by Zinc Chrome 62 (L).
and External surface of all carbon steel fittings, shall be
treated with Phosphating or Blackening process.
fittings shall be permanently marked either by hard punching method
or etching method using electrolytic marking machine.
the accepted fittings, a works certificates of compliance to
the manufacturing specification shall be issued by the
fittings shall be guaranteed to be free from any manufacturing
defects for a period of 12 months from the date of commissioning
or 12 months from the date of its dispatch from our works, whichever
Brass, Stainless Steel & Carbon Steel fittings
testing is essential as per BS 4368 part IV for brass, stainless
steel & carbon steel fittings.