Our Process

DELTA experience in Welding is Phenomenon and would be able to weld all kind of carbon steels, Alloys steels, Stainless steels, Duplex and super duplex stainless steels, Super alloys like inconel, Monel, Hastelloy, Non ferrous like Aluminium, Copper, Copper nickel, Aluminum bronze of varies grades.

DELTA having established welding procedure for carbon steels, Alloys steels, Stainless steels, Duplex and super duplex stainless steels, Super alloys.

DELTA having the experience of hard facing of Stellite on various grades like Stellite Gr6, Stellite Gr12, Stellite Gr21, Colmony of grades 40, 50 & 60.

DELTA having the experience of Inconel cladding of various grades, Nickel cladding, Aluminium bronze cladding, Monel cladding, Duplex and super duplex cladding.

DELTA having established welding process OAW, SMAW, GTAW, FCAW, GMAW, Spray & Fuse, PTAW, SAW, Micro Plasma & Micro TIG.


All the above mentioned works are our day to day activities. The qualities of the products are
controlled by the follozvingsystem and Instruments.

 NDT controls: UT, RT, PT & MT performed by our II Level ASNT personnel.

 Thickness measurement by COATMEASURE (for non-magnetic material).

 Oxygen content measurement for butt weld using gas backing protection.

 IR Thermometer for Controlling Preheating & Interpass Temperature.

 Ferrite control by Ferritoscope (magnetic method).

 Hardness measurement by EQUOTIP instrument.


 Overlay/Cladding/Hard Surfacing by wire/powder/rod on tube sheets and Shafts.

 Overlay/Cladding/Hard Surfacing by wire/powder/rod on balls, bodies, Wedges & flanges for valves.

 Overlay/Cladding/Hard Surfacing by wire/powder/rod on ID of flanges, gates, tubes and bends etc.

 Butt weld by SAW process and "narrow gap" technique on high wall thickness components.

 Butt weld body / connector for "inter joint" valves by automatic equipment using a special cooling

 system in order to preserve from overheating the valve seats.


 WPS, PQR & WPQin all welding process and which are approved by our customers.

 All our special application WPS are approved by TPI.

 Our Works & Welders are approved by IBR.