Welding and
special overlay

Welding and Special Overlay

Certified Quality and Innovative Processes

Discover how Asimer Group leads in specialized welding services, offering hardfacing processes and special contributions that enhance the quality of your products. Our Welding Department is committed to excellence (certified according to ISO 3834-2) and performs two key functions: repairs on cast parts (porosity or shrinkage in parts during machining processes) and special contributions (nickel base and cobalt base), providing solutions known for their surface hardness and certified quality. It is important to highlight that all welding processes are controlled with their corresponding NDT (Non-Destructive Testing), whether PT, MT, PM, and Rx, with PT Level II operators.
Soldadura especializada


Steels and alloy steels

ASTM austenitic
stainless steels

Tuesdayintic steels A 743

Duplex ASTM A995

Foundry repairs


Cobalt base

Nickel base

Welding Services

Special Welding

Welding Overlay

The welding overlay process involves adding material similar to the base material, ensuring a solid and durable bond. At Asimer Group, this process is carried out with precision to improve and repair fundamental components. All this is homologated according to UNE or ASME standards, depending on customer requirements.
hardfacing Overlay

Special Welding (Hardfacing Overlay)

We specialize in special contributions (Nickel Base and/or Cobalt Base) to confer high surface hardness to the end products. We work with a variety of materials, including steels and alloy steels, authentic ASTM stainless steels, A 743 martensitic steels, and duplex ASTM A995.

ISO 3834-2 Certificate


ISO 9001-2015 Certificate

Quality Certification - ISO 3834-2

Asimer Group is certified under UNE-EN ISO 3834-2, ensuring comprehensive quality control in all aspects of welded fabrication. This standard defines complete quality requirements for fusion welding of metallic materials.  

Approvals and Welding Processes

With over 80 Welding Procedure Specification approvals in ASME or EN-ISO-15614 standards, we excel in meeting the most demanding specifications. Our welding processes undergo rigorous Non-Destructive Testing (NDT) required by the customer, including liquid penetrant, ultrasonic testing, magnetic particle testing, and hardness testing.

Welding Processes - Innovation in Action

At Asimer Group, we employ the latest advancements in welding processes, ensuring superior results. Our services include:

MIG (Metal Inert Gas): Perfect for quick and efficient joints.

MAG (Metal Active Gas): Offering versatility and strength in various applications.

TIG (Tungsten Inert Gas): Ideal for high-precision welds on delicate materials.

SMAW (Shielded Metal Arc Welding): Providing flexibility and manual control.

Automatic Welding: We have automatic welding machines to guarantee precision and consistency in every joint.

Maquia Soldadura
Instalaciones Asimer

Industry Experience

With years of experience, we have closely collaborated with industrial valves and firefighting equipment to provide personalized and efficient solutions.  

  • Commitment to Quality: Our processes and materials meet the industry’s most demanding standards.
  • On Time Delivery (OTD) represents the most important indicator in ASIMER.
  • Personalized Approach: Every project is unique. We work with you to understand your needs and tailor our solutions.

Featured Projects

Automatic Welding Machine

Welding the rings (A316L + Stellite Gr.6) inside the bodies

Globe Valve Bodies with stellite 21 hardfaced in the seat

Other services
produccion por mecanizado

Machining production

Asimer Group has the most modern technical means for Machining processes, interconnected with its Management System (AGP).

desarrollo de ingenieria

Engineering solutions

Asimer Group is specialized in project management, quality assurance (QA) and engineering through the integration of different manufacturing technologies.

Follow us on LinkedIn to learn more about our services