GMAW (Gas Metal Arc Welding) — Build-Up and Cladding Services by Teknokraft 

Since 1995, Teknokraft has been utilizing the GMAW (Gas Metal Arc Welding) process for Overlay and Cladding applications across various industrial sectors. 
With decades of expertise in wear control, special welding, and surface engineering, Teknokraft ensures every GMAW operation delivers precision, consistency, and long-lasting performance. 

What is GMAW (Gas Metal Arc Welding)? 

GMAW is one of the most versatile and efficient welding processes widely used in modern industries. This method uses a continuous consumable wire electrode and shielding gas to create a high-quality, stable weld joint. 
Key advantages of the GMAW process include: 
High welding speed and productivity 

• High welding speed and productivity 

• Clean, stable weld quality 

• Minimal spatter and rework 

• Suitable for multiple materials — including carbon steel, stainless steel, and aluminum alloys 

However, GMAW is less suitable for welding extremely thick materials or outdoor applications without proper shielding, as it requires a consistent power source and stable shielding gas. Skilled operators are also essential to achieve optimal results and cost efficiency. 

Special GMAW Materials at Teknokraft 

To meet various industrial requirements, Teknokraft is equipped with a wide range of special GMAW materials designed for superior wear resistance, corrosion protection, and high-temperature performance. 
Our available materials include: 

• Stellite 1 – Exceptional hardness and wear resistance, ideal for severe abrasion environments 

• Stellite 6 – Excellent balance of wear and corrosion resistance for general-purpose cladding 

• Stellite 12 – High hardness alloy suited for components exposed to intense heat and friction 

• Stellite 21 – Superior corrosion resistance combined with good mechanical toughness 

• Stainless Steel 316L – Excellent corrosion resistance and weldability, suitable for chemical and marine environments 

These premium materials enable Teknokraft to deliver customized Build-Up and Cladding solutions tailored to each client’s operational needs — ensuring extended component life and reduced downtime. 

GMAW Applications at Teknokraft 

1. Build-Up Welding 

GMAW Build-Up is an effective solution for restoring worn or damaged industrial components by rebuilding or adding material to the original part. 
Common applications include:  

• Heavy equipment repair (excavators, bulldozers, etc.) 

• Rebuilding shafts, gears, and bearing seats 

• Pipeline and mechanical component restoration 

By using GMAW for Build-Up, original dimensions and mechanical integrity can be restored, significantly extending the service life of industrial assets. 

2. Cladding and Overlay 

For Cladding applications, GMAW is used to deposit a protective metal layer over an existing surface — enhancing the base material’s resistance to corrosion, abrasion, heat, and erosion. 

This technique is widely used in industries such as: Power generation, Petrochemical, oil & gas, and Aerospace, GMAW Cladding improves both performance and durability of critical components exposed to harsh environments and high operational stress. 

Automated GMAW Welding for Consistent Quality 

GMAW processes are robotically automated to achieve higher efficiency, accuracy, and repeatability.  Using multi-axis positioners and advanced control systems, Teknokraft automated GMAW setup delivers smooth and uniform welds — ideal for large-scale cladding and overlay projects that demand precision and reliability. 

Contact Teknokraft 

For inquiries or to request a quotation for GMAW Build-Up and Cladding Services, please contact us at +62 817-7959-0046 (Teknokraft WhatsApp Hotline) and please include: Full Name, Phone Number / Mobile, Email Address, and Equipment description or service requirements 

Our technical team will get in touch promptly to discuss your needs and recommend the best welding and surface engineering solution for your equipment. 

Teknokraft — Your Trusted Partner in Industrial Welding & Surface Protection Solutions 

Shielded metal arc welding (SMAW)

Teknokraf has been using Shielded Metal Arc Welding (SMAW) since 1995 for speciality maintenance and repair of metal components.  SMAW is a manual welding process that involves striking an arc between a covered electrode and the workpiece to melt and fuse the metal. The electrode is coated with flux that provides a protective shield for the weld and also generates a slag that must be removed after the welding is complete. SMAW is a versatile process that can be used with a variety of electrode types, including special alloys, to make welding repairs.

Teknokraft is quite experienced in welding of cast iron, from our many years of experience in Eutectic + Castolin.  Welding by SMAW of cast iron can be challenging due to its brittle nature, high thermal conductivity, and tendency to crack during cooling. To minimize these risks, it is important to preheat the cast iron before welding and to use a low-hydrogen and usually a high nickel electrode. The preheating helps to slow down the cooling rate and reduce the risk of cracking, while the low-hydrogen electrode reduces the risk of hydrogen-induced cracking during the cooling process. Additionally, it is important to use a slow cooling process, as well as to use a filler material that matches the composition of the cast iron.

For further Inquiries, Contact Us at 0817-7959-0046 (Teknokraft WhatsApp Hotline) or fill out the contact form page. Please include your name, phone number, email, and equipment description, and we will get back to you as soon as possible. Thank you for considering Teknokraft for your repair needs.

Plasma Transferred Arc Welding (PTAW)

Teknokraft has been working with PTAW since 1995.  Plasma Transferred Arc Welding (PTAW) is a type of arc welding process that is like gas tungsten arc welding (GTAW). In PTAW, the electric arc is formed between an electrode (usually made of sintered tungsten) and the workpiece, and the plasma arc is separated from the shielding gas envelope by positioning the electrode within the body of the torch. The plasma is then forced through a small copper nozzle which constricts the arc, and the plasma exits the orifice at high velocities and high temperatures. PTAW is unique among surfacing processes as it gives True Metallurgical Bonds, meaning the weld deposit cannot chip off the base metal. The alloy used in PTAW is 65% Macro Crystalline Tungsten carbide alloy, mixed in a NiCrBSi matrix, which offers the best combination of abrasion and impact resistance and cosmetic appearance. PTAW is an inexpensive process, with the cost depending on the surface area to be coated and the thickness of the deposit, and the savings come during the repair of the PTA coating which is often very inexpensive.
Plasma Transferred Arc Welding (PTAW) offers several benefits over other welding processes.
High precision: The use of a small copper nozzle allows for a high degree of precision in the welding process, resulting in minimal distortion of the workpiece.
High travel speed: The high velocity of the plasma allows for faster travel speeds during welding, increasing productivity.
Low dilution: The low dilution rate of PTAW, usually less than 5%, means that the surfacing alloy is of the highest purity. This leads to better wear life in the field.
High bond strength: The metallurgical bonding mechanism of PTAW results in excellent bond strength between the substrate and the alloy, making it ideal for applications that require high abrasion and impact resistance.
High abrasion resistance: The use of Tungsten carbide alloy as a surfacing material results in excellent abrasion resistance, particularly against fine particle abrasion accompanied by impact.

Easy repairability: PTA deposits are easy to repair, allowing for partial repairs or welding over the deposit, which can save time and cost.

High impact resistance: The high bond strength between the substrate and the alloy results in excellent impact resistance.
Versatility: PTAW can be used on a wide range of materials including metals.

For further Inquiries, Contact Us at 0817-7959-0046 (Teknokraft WhatsApp Hotline) or fill out the contact form page. Please include your name, phone number, email, and equipment description, and we will get back to you as soon as possible. Thank you for considering Teknokraft for your repair needs.

Teknokraft has extensive experience in welding Corrosion Resistant Alloy (CRA) materials, especially Inconel 625, Stellite 6, AISI 410 SS, and AISI 420 SS. Widely used in the oil and gas industry for their excellent corrosion resistance and high-temperature strength. Inconel 625 is a preferred material for CRA overlays and cladding, which are critical components that protect equipment and infrastructure from harsh operating conditions and corrosive environments.
Teknokraft's team of certified welders has extensive experience in Gas Tungsten Arc Welding (GTAW), also known as Tungsten Inert Gas (TIG) welding, of Inconel 625 and other CRA materials for overlay and cladding applications. The company's state-of-the-art equipment and latest welding technology ensure that the welding process is efficient, cost-effective, and produces high-quality results, meeting the strictest industry standards.
In addition to welding services, Teknokraft offers a range of services related to CRA overlays and cladding, including material selection, welding procedure development, project management, and quality control.
One of an excellent example of Teknokraft's expertise in Inconel 625 cladding and overlay can be seen in the recent project where the company provided cladding services for a 12-inch Gate Valve. In this project, Teknokraft's team of certified welders used Gas Tungsten Arc Welding (GTAW) to weld Inconel 625 onto the 12inch Gate Valve, providing protection against corrosion and wear.
The use of Inconel 625 for cladding and overlay is an effective solution for extending the lifespan of critical components in harsh operating conditions and corrosive environments.
This recent project is a testament to Teknokraft's commitment to quality, safety, and customer satisfaction. The company's team of experienced engineers and technicians worked closely with the client to ensure that the project was completed on time and within budget, meeting the client's needs and exceeding their expectations.
Teknokraft's expertise in Inconel 625 CRA cladding and overlay for critical components, such as Gate Valve, Cover Bonnet Valve combined with its state-of-the-art equipment and latest welding technology, ensures that the cladding process is efficient, cost-effective, and produces high-quality results.
Overall, Teknokraft's extensive experience in welding Inconel 625 and other CRA materials for overlay and cladding applications, combined with its state-of-the-art equipment and latest welding technology, makes it a reliable and trustworthy partner for clients in various sectors, including oil and gas, petrochemicals, and power generation.