Submerged arc welding inside a large diameter pipe at the NPC mill

Facilities

A plant engineered around throughput.

From coil to coated joint, every stage of production happens on site — forming, welding, expansion, hydrotesting, inspection and finishing.

Submerged arc welding inside a large diameter pipe at the NPC mill

Facilities

A plant engineered around throughput.

From coil to coated joint, every stage of production happens on site — forming, welding, expansion, hydrotesting, inspection and finishing.

Pipe mills

Helical and longitudinal SAW lines running under one roof in Dhahran.

Test laboratory

Mechanical, chemical and non-destructive testing on every production lot.

Machine shop

In-house tooling, bevelling and maintenance keeping the lines uninterrupted.

Health & safety

A safety culture and training programme built around zero-incident operations.

Equipment

Plant units

Production unitsDhahran, Eastern Province
Production unitProcessKey parameterOutput
Helical millSpiral forming + tandem SAW508 – 2134 mm OD250,000 MT/y
Longitudinal millJCO forming + SAW + expansion610 – 1524 mm OD180,000 MT/y
Hydrotest stationHydrostatic proof testup to 300 bar100% of joints
Test laboratoryMechanical, chemical, NDTper production lotFull dossier
Machine shopBevelling, tooling, maintenancein-houseContinuous

Contact

Tell us about your pipeline.

Send us your specification — diameter, wall thickness, grade, coating and tonnage — and our team will come back with availability and lead times.

  • Plant & head office

    Dhahran, Eastern Province, Saudi Arabia

  • Telephone

    +966 13 857 0000

  • Email

    info@npc.com.sa

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