Welded Casing 

Welded casing is a vital component in drilling operations, designed to protect the wellbore, isolate geological formations, and maintain structural integrity under high-pressure conditions. Manufactured using Electric Resistance Welding (ERW) or Spiral Submerged Arc Welding (SSAW), these casings provide exceptional durability, uniform wall thickness, and strong weld bonding, ideal for demanding oil, gas, geothermal, and water well applications.

Types of Welded Casing We Supply

Conductor Casing (Drive Pipe)

The first and widest casing installed in a well.

• Stabilizes loose surface formations
• Prevents washouts
• Supports the drilling rig
• Forms the structural base for the entire well

Surface Casing

A safety-critical casing string used to protect shallow zones.

• Shields freshwater aquifers
• Allows installation of BOP (Blowout Preventer)
• Ensures safe drilling to deeper sections

Intermediate Casing

Ideal for zones with pressure changes, reactive shale, or unstable formations.

• Isolates problematic geological layers
• Enhances well control
• Reduces drilling risks

Production Casing

Installed across the reservoir zone.

• Provides a secure production path for oil & gas
• Prevents fluid migration between formations
• Ensures long-term well integrity and performance

Liner (Partial Casing)

A cost-effective alternative to full-length casing.

• Used to cover only the required interval
• Reduces material cost
• Easily tied back if needed

Why Choose Our Welded Casings?

Our welded casings are manufactured to meet strict API 5CT, ASTM, and international quality standards.

They offer:

• High burst, collapse & tensile strength
• Uniform welding with ERW or Spiral Weld
• Heat-treated weld seams for improved toughness
• Precision diameters for easy handling and installation
• Suitable for deep wells and high-pressure wells

We supply a full range of diameters, wall thicknesses, grades, connections, and custom lengths upon request.

Looking for Welded Casing Prices?

Contact our team to receive a customized quotation based on:

• Size & diameter
• Steel grade
• Wall thickness
• Welding method (ERW / Spiral)
• Order volume

Send us your requirements — we’ll provide the best price and fastest delivery.