LESTO’s welding and welding control processes are performed in accordance with the requirements of the ISO 3834 series of standards and meet certification level CL 1, according to EN 15085-2, which regulates the requirements for manufacturers of welded products for railway vehicles.



Manufacturing Capabilities

Robotic MIG/MAG welding, Brazing

Welding with robots can provide faster cycles and consistent quality compared to manual welding. Productivity, efficiency, and product quality are increased.

Manual welding by MIG/MAG, TIG and Brazing methods

Through manual welding by MIG/MAG and TIG methods - aluminum, stainless steel and carbon steel, Lesto Product can meet a variety of individual customer requirements, with complete solutions for the manufacture of products with guaranteed quality.

Capacitor discharge stud welding with tip ignition
(EN ISO 786)

Stud welding with capacitor discharge. Through an electronically clocked inverter board, extremely short charging times are achieved and thus, fast welding sequences are achieved. Suitable for materials such as aluminum, stainless steel, carbon steel.

ARC welding / Drawn arc stud welding with ceramic ferrule or shielding gas (EN ISO 783)

Electro Arc stud welding with shielding gas. Stud welding with ceramic ring on stainless and carbon steel is an extremely robust construction ensuring high reliability.

Electric resistance spot welding (EN ISO 212)

According to experts, the average time required for spot welding is 0.01 to 0.63 seconds, making it a very budget-friendly and reliable welding process that, in addition to these advantages, provides an aesthetic appearance of the products.

Technologies and machines

Most Advanced Equipment

To provide quality and professional service, we rely on advanced equipment that helps us meet the high demands of our customers.

  • The Motoman MA 1900 robot represents the latest generation of robots controlled by the DX200 control system.
  • TransSteel 3000C PULSE is a fully digitally controlled, multiprocessor, inverter for impulsive MIG – MAG welding.
  • Magic Wave 230 i is a fully numerically-controlled, digital, inverter WIG – AC/DC welding machine with non-contact arc ignition.
  • With DALEX’s PMS series we provide spot welding of parts where the joint is created by melting and solidifying the material in the joint.
  • The welding parameter monitoring integrated as standard in all stud welding modules of the PRO-C series allows quality control of the finished welds.
Standards and certificates

Regulated and controlled work

The organization of work at Lesto Product is systematic and well-controlled, and the company meets the requirements of several international standards:

1000 ppm

ISO 45001:2018

ISO 9001: 2015

BDS EN ISO 3834-2

ISO 14001:2015

EN 15085-2:2020

DIN № 6701-2

Customer feedback

What our clients say about us

Reliability, responsiveness, accuracy, proactive communication and excellent execution. Such characteristics mark our relationship with Lesto Product Ltd. We are glad to have such a partner with whom we meet the challenges of the day.

Lesto Product Ltd. always fulfils our order on time and provides technical assistance when needed. We intend to work together with the Lesto Product team in the future, relying on their accumulated experience, which is a guarantee that they deserve the trust of their future customers.

|ㅤSilvena Andonova and Emil Milev

I have known Lesto Product since 2012 and I could call the company “the white swallow in the field of sheet metal in Bulgaria”.

It is not often these days that you find a manufacturing organization that does not have employees focused on getting them new customers because customers just find the company.

Consistent, organized, responsible, honest, open-minded and thinking several moves ahead to support the customer – these are fitting words that represent their work over the 10 years I have known them and are fully supported by the actions of the Lesto Product team led by Mr. Gladniski and Ms. Kancheva.

I can share that I admire the fact that an all-Bulgarian company is developing so consistently and sustainably over time and share that they are treating the commitments they make professionally. We know we can rely on quality work from them, both in securing serial deliveries and in developing new products.

In the 7 years of cooperation between HP Tronic Ruse Ltd and Lestno Product Ltd, I would like to express our gratitude for the support, understanding and assistance we continue to receive from them.

|ㅤNikolai Nedyalchev


Contact us