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Stick Electrode Welding (MMA)
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Welding

Contract Stick Electrode Welding (MMA) Service

The benchmark manual welding process for ultra-high mechanical strength on thick structural steel plates, special alloy steels, and heavy load-bearing structures.

Maximum Integrity for Heavy Steelworks

Looking for a qualified partner for contract stick electrode welding? Our fabrication shop offers a highly specialized joining service using the MMA (Manual Metal Arc) process, the benchmark technology for maximum structural strength on thick sections, special steels and structures designed to bear extreme mechanical loads.

Despite the introduction of automated processes, coated electrode welding remains irreplaceable for heavy structural applications, on-site work and complex industrial maintenance. Choosing us as your subcontracting partner means relying on professional welders with recognized qualifications, working in full compliance with current standards (such as EN ISO 9606) and the strictest non-destructive testing.

What Is MMA Welding and What Are Its Advantages for Heavy Structures

Coated electrode welding is a manual process in which the electric arc strikes between the electrode (which acts as filler material) and the workpiece. As it melts, the electrode coating creates a protective slag and a gas shield that effectively protect the weld pool from atmospheric contamination.

Entrusting your structural and heavy fabrication projects to our contract service guarantees unique technical advantages:

Deep Penetration & Unmatched Mechanical Strength

The ideal process for joining thick plates, beams and profiles. It delivers deep, structurally sound joints that withstand tension, torsion and continuous vibration.

Versatility in Any Condition (Even Outdoors)

Unlike MIG or TIG, which require a shielding gas cylinder and are highly sensitive to drafts, stick welding is not affected by wind. This lets us work effectively outdoors or directly on site.

Suitable for Difficult Metals & Imperfect Surfaces

The MMA process tolerates light traces of oxide, mill scale or zinc better than other technologies, still producing a sound, defect-free joint after proper mechanical preparation.

Wide Choice of Coatings for Specific Needs

We use basic electrodes (for maximum mechanical strength and low-temperature toughness), rutile electrodes (for better appearance and arc fluidity) or cellulosic electrodes, depending on the project's technical specifications.

Industries That Require MMA Welding

We supply stick-welded parts and subcontracting services to the most demanding structural and industrial sectors:

Infrastructure & Civil Construction

Load-bearing structures for industrial buildings, bridges, metal walkways, foundation piles and structural reinforcement frames.

Mining & Earthmoving

Repair, reinforcement and assembly of excavator buckets, crushers, screens and heavy machinery for quarries and mines.

Heavy Industrial Plants

Bases for large presses, turbine supports, penstocks, chimneys and support structures for chemical or petrochemical plants.

Shipbuilding & Railways

Structural components for shipbuilding, docks, heavy fittings and railway infrastructure.

FAQ & Technical Insights

Which materials and metal alloys do you weld with coated electrodes?

The skill and experience of our welders allow us to work on a wide range of materials, selecting the exact electrode type and current parameters for each specific alloy. We stick-weld carbon steels and heavy structural steelwork (HEA, HEB and IPE beams, anchor plates and structural nodes), special high-strength or wear-resistant alloy steels (such as Hardox, used in earthmoving) and stainless steel for structural applications or corrosion-resistant maintenance. We also apply hardfacing and wear-resistant overlays to rebuild parts worn by abrasion (crusher blades, bucket teeth).

How are joints prepared in heavy fabrication?

In heavy fabrication, stick welding leaves no room for improvisation: every step is planned to eliminate the risk of internal defects such as slag inclusions or porosity. Before welding, parts (often coming from our sheet or tube laser cutting departments) are mechanically beveled. Creating V, X or U bevels is essential to allow the electrode to penetrate to the core of the metal thickness.

How do you prevent cold cracking on thick steel plates?

We execute controlled pre-heating procedures followed by monitored slow cooling to dissipate internal stresses and prevent hydrogen-induced cold cracking.

Basic vs. Rutile Electrodes - What is the difference?

Basic coated electrodes deliver exceptional metallurgical purity, maximum tensile strength, and high impact toughness at low temperatures (ideal for heavy structural joints). Rutile electrodes offer smooth arc stability and aesthetic beads for light fabrication.

Request more information Stick Electrode Welding (MMA)

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Address

Via Palù, 34, 36040
Grumolo delle Abbadesse
(VI) Italy

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