Skip to content
LPG CYLINDERS MANUFACTURING

Manufacturing & quality

Three stages that decide quality.

Every cylinder is heat treated, finished in four coats and tested before it leaves our units. Not a sample: every one.

cylinders a year
800k
critical stages
3
cylinders tested
100%
Automatic circumferential welding machine joining the two halves of a cylinder shell

Fig. · Automatic circumferential welding

Technology

Welded by machine, seam after seam.

The two halves of every shell are joined on an automatic circumferential welding line. The machine lays the same seam on every cylinder, so weld quality stays consistent across the whole run.

Each welded shell then goes through the three stages that decide its quality: heat treatment, surface finish and testing.

Welded cylinder shells entering the heat treatment furnace

Stage a · Normalising furnace

a.

Heat Treatment

After welding, every shell is heat treated in a furnace to relieve the stresses welding leaves in the steel.

  1. Heat treating after weldingRelieves welding stress across the whole shell.

Stage b · Four-coat finish

b.

Surface Finish

A four-stage finish protects the shell against corrosion for its working life.

  1. Shot blastingCleans the shell to bare metal for coating.
  2. MetallizingA zinc coating for corrosion protection.
  3. PrimerBonds the finish to the metallized surface.
  4. Finish paintPainted to OMC and customer specification.

Stage c · Tested fittings

c.

Testing

Every cylinder is tested, not a sample, before it leaves our units.

  1. Hydrostatic testingEach shell is pressurised with water to prove its strength.
  2. Pneumatic testingAir pressure testing after valve fixing confirms leak-tightness.
  3. Final inspectionWelds, finish and markings are checked before dispatch.

Certifications

Approved and independently inspected.

Our cylinders and quality systems comply with India's statutory bodies and are inspected by independent agencies.

  • PESOPetroleum and Explosives Safety Organisation
  • BISBureau of Indian Standards
  • ISO 9001IS/ISO 9001 quality management system, certified by BIS
  • SGSSGS India Pvt Ltd, Société Générale de Surveillance
  • TÜVTÜV India Pvt Ltd

Start a conversation

Let's talk cylinders.

For OMC tenders, distributor supply or export orders. We reply within one business day.

Request a quoteWhatsApp +91 98480 35435