Custom welding services India — structural and industrial welding for fabricated steel

Custom welding services in India cover the full range of industrial and structural welding applications — from standard structural fillet welds on mild steel to full-penetration butt welds on thick plate, stainless steel TIG welding for process equipment, and specialised overlay welding for wear-resistant applications. The common requirement across all custom welding is that the welds must be made by qualified welders using qualified weld procedures, and the completed welds must be inspected to confirm they meet the specified quality. Suncorporation provides custom welding services for structural, industrial, and process applications from our Hyderabad workshop, with all welding done by our own IS 7307 certified welders to IS 9595 qualified weld procedure specifications.

Custom welding processes available at Suncorporation India

MIG welding (GMAW) — structural and general fabrication

MIG welding — Metal Inert Gas or Gas Metal Arc Welding — is the primary welding process for structural mild steel fabrication in India. It is fast, produces consistent weld profiles on continuous runs, and is suitable for plate thicknesses from 3mm upwards in the flat, horizontal, and vertical positions. MIG welding at Suncorporation is done using calibrated welding machines with qualified wire and gas combinations per the IS 9595 WPS for each application. Weld parameters — voltage, amperage, travel speed, wire feed rate, and gas flow — are set to the qualified ranges before welding begins and checked against the WPS at the start of each production run.

SAW welding — submerged arc welding for long straight runs

Submerged arc welding (SAW) is the most productive welding process for long straight seam welds on heavy plate — the process that Suncorporation uses for the longitudinal fillet welds on plate girder flanges, the shell seam welds on large storage tanks, and any other application requiring high deposition rates on flat plate in the horizontal position. SAW produces consistent weld penetration and profile on thick plate runs that manual MIG welding cannot match in terms of productivity or consistency. The SAW process is qualified to IS 9595 for each plate thickness range and joint configuration used in production.

TIG welding — stainless steel and root run quality welding

TIG welding — Tungsten Inert Gas or Gas Tungsten Arc Welding — is used at Suncorporation for stainless steel welding where MIG would introduce carbon contamination or iron contamination of the stainless steel weld metal, and for root runs in full-penetration butt welds where the complete penetration and the clean back bead are critical. TIG welding is slower than MIG but produces a higher-quality, more controllable weld, which is why it is the standard process for stainless steel process equipment welding and for root passes in pressure-boundary welds. All stainless steel TIG welding at Suncorporation is done in our dedicated stainless steel fabrication area with segregated tooling and equipment to prevent carbon steel contamination.

SMAW welding — stick welding for positional and repair work

SMAW — Shielded Metal Arc Welding, commonly called stick welding — is used at Suncorporation for positional welding in restricted access locations where MIG or SAW equipment cannot reach, for root runs in full-penetration joints where a covered electrode gives better control than wire welding, and for site repair welding where portable SMAW equipment can be used without a fixed gas supply. SMAW welders are qualified to IS 7307 for the specific electrode types, plate thicknesses, and welding positions required in each application.

Weld inspection for custom welding services in India

Custom welding services at Suncorporation include weld inspection as a standard deliverable — not an optional extra. Visual inspection of all welds is done before NDT. Magnetic particle inspection (MPI) is applied to all structural fillet welds in critical connections. Ultrasonic testing (UT) is applied to all full-penetration butt welds in structural and pressure-boundary applications. Liquid penetrant testing (PT) is applied to stainless steel welds where MPI is not applicable. The weld inspection records — specifying the weld identification, the inspection method, the acceptance criteria, and the inspection result — are included in the project documentation package supplied at completion.

Custom welding services cost India — 2026

• Structural MIG fillet welding, mild steel: Rs 8,000 to Rs 15,000 per MT of weld metal deposited, depending on position and accessibility. Simple flat position welding at the lower end; positional or restricted access at the higher end.
• SAW welding, thick plate seam welds: Rs 6,000 to Rs 10,000 per MT of weld metal deposited. Faster deposition rate and higher productivity than MIG makes SAW more economical for long runs.
• Stainless steel TIG welding: Rs 25,000 to Rs 45,000 per MT of weld metal deposited. Higher skill level, slower process, segregated equipment, and post-weld pickling drive the premium over carbon steel welding.
• Custom welding with full NDT (UT + MPI): Add Rs 5,000 to Rs 15,000 per MT of finished fabrication for inspection, depending on the inspection category and the access conditions for NDT equipment.

Contact Suncorporation for custom welding services India. Also see: Heavy steel fabrication | Plate fabrication | Industrial painting and blasting | Storage tank fabrication