Heinz Soyer Bolzenschweisstechnik GmbH

Booth number: E 7610

About us


For more than 47 years Heinz Soyer Bolzenschweißtechnik GmbH has stood for technical expertise in the field of stud welding technology. Soyer's product portfolio encompasses everything from state-of the-art portable stud welding equipment to fully automated high-tech CNC controlled machining centres. Welding accessories and all kinds of welding fasteners are also available from the Wörthsee production site in Germany - everything from one source, straight from the manufacturer!

Products and services

Portable stud welders for all-position welding

Heinz Soyer Bolzenschweißtechnik will be displaying its new and compact welding devices of the SRM® generation. These include the stud welding inverter BMK-8i with single-phase 230 V connection and the second-generation BMK-12i stud welder in a miniature format. Both stud welding devices are extremely lightweight (9.5 kg and 7.8 kg) and were specifically developed to be mobile. They enable the energy-efficient, safe and absolutely clean welding of studs made of steel and stainless steel without the use of ceramic rings and offer first-rate welding results without flanges, weld bead or weld spatter. This allows welding operators to use the stud thread right up to the base material. The BMK-8i and BMK-12i stud welding inverters are ideal of welding in all positions, even under challenging conditions such as out-of-position welding.

Soyer BMK-8i stud welding inverter

Soyer BMK-8i stud welding inverter

The compact Soyer devices of the BMK-8i generation with 230 V single-phase input power have been particularly developed for mobile use in workshops or for installation work. Thanks to the inverter technology and with the "SRM Technology®" (pat. no.: DE 10 2004 051389) integrated as standard, it is now possible to weld steel and stainless steel studs up to M10 (Soyer HZ-1R) with just 300 A of weld current. Heavy current as well as the use of ceramic rings are no longer required for such tasks.

Soyer BMK-12i stud welding inverter

Soyer BMK-12i stud welding inverter

The miniature stud welding inverter, in a handbag format, weighs just 7.8 kg and, with a welding capacity of 800 amps, is suitable for weld studs made of steel and stainless steel up to Ø 12 mm. It does not require ceramic rings when welding and produces high strength welded joints without flange or weld bead. Due to the low weight and the drastically reduced energy consumption, there are hardly any limits any more to mobility, flexibility and possible applications of all types.

PH-9 SRM16 stud welding gun

PH-9 SRM16 stud welding gun

In conjunction with the stud-welding inverter BMK-12i, the new welding gun PH-9 SRM16 allows you to weld studs made of steel and stainless steel up to M16 onto thick and thin metallic workpieces without using ceramic rings. Thanks to an innovative gas shroud on the PH-9 SRM16 welding gun, shielding gas consumption was reduced by up to 90%. More than 10,000 welds (HZ1-8mm) can now be performed with 2 litre mini gas bottles and large, heavy and classic gas bottles are thus a thing of the past.


Heinz Soyer Bolzenschweisstechnik GmbH
Inninger Str. 14
82237 Woerthsee

Phone: +49 8153 8850
Fax: +49 8153 8030

Oliver Pohlus
Export Sales Director

Zhuhai Cowin Welding Machine & Consumable Co., Ltd.
12/F Xinhai Bldg, Yuanli Rd, Jida, Xiangzhou District
519015 Zhuhai
P.R. China

Phone: +86 756 3324168
Fax: +86 756 3324166

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