Parts & Services

Dedicated, quick, and customized services are an essential aspect of GAB Neumann’s long-term commitment to offering sustainable solutions to its customers worldwide. We implement all the possible measures to keep our customers operating with as little disruption as possible. We keep some essential spare parts on inventory and manage to produce the others rapidly. Our fitters do always their best to find practical mid-term and long-term solutions. We provide chemicals or mechanical cleaning services. And finally, we assist our customers during assembly, erection, and start-up of equipment and units.

Spare parts

GAB Neumann manufactures spare parts for any graphite or silicon carbide process equipment

Maintenance and repair

GAB Neumann ensures the maintenance and repair of any graphite or silicon carbide process equipment

Cleaning services

CAS Neumann offers a complete range chemical and mechanical cleaning services for heat exchangers or complete units

On-site supervision

GAB Neumann provides on-site supervision of technical crews during assembly, erection, start-up, or maintenance


GAB Neumann provides planned inspection and servicing.


  • Impervious graphite or silicon carbide (SiC)
  • Shell, Pressure plates and flanges: carbon steel or stainless steel
  • Tie rods, nuts, bolts, washers, springs: stainless steel
  • Other materials of construction such as PTFE, PFA, or glass lined steel whenever necessary

Key features

  • Technical assessment prior to any action
  • Fixing or replacement of broken parts
  • Chemical and mechanical cleaning if ever necessary
  • Refurbishing of aged or damaged pieces of graphite or silicon carbide process equipment
  • Planned or preventive maintenance at our customers’ sites or in our workshop
  • On-site supervision of work

Key Benefits:

  • Highly experienced fitters, technicians, and engineers in the field of assessment, maintenance, repair, assembly supervision, erection, and start-up of graphite and silicon carbide process equipment
  • Quick fixes and long-term solutions
  • Essential spares parts on inventory
  • Rapid production of non-essential spare parts
  • Short lead time

Main applications:

  • Quick fix or long-term repair of any graphite and silicon carbide process equipment
  • Chemical or mechanical cleaning of fouled or clogged equipment or complete unit
  • Debottlenecking

Customer support

We assist our customers during planning, installation, training, trouble shooting, maintenance, upgrading, and disposal of our pieces of equipment. We assist them in making cost effective and correct use of the equipment that we design, manufacture and service. We also assist our customers for the proper selection of right materials of construction.

Parts and services offered by GAB Neumann

GAB Neumann offers a complete set of services in the field of graphite and silicon carbide process equipment and much more.

We manufacture spare parts for any kind of graphite heat exchangers, graphite process equipment, and silicon carbide heat exchangers including those supplied by other original equipment manufacturers. We can precisely measure and reverse-engineer any parts so that it fits precisely in the original equipment footprint, accomplishes exactly the same function, and achieves the very same duty. Thanks to our versatile production capabilities and our network of industrial partners we can manufacture accurately and rapidly pretty much any spare part for silicon carbide and graphite process equipment.

We ensure the maintenance and repair of any graphite or silicon carbide process equipment. First of all, we inspect the equipment (search for leaks, endoscopic inspection, visual inspection, pressure testing, etc…) before implementing the necessary measures. It might consist among others in replacing some graphite or silicon carbide parts, expansion bellows, gaskets, tube sheets or some steel or stainless-steel parts such as bolts, nuts, tie rods, shell, pressure plates, etc… We never let our customers down. Our fitters, technicians and engineers always look for appropriate solutions to keep our customers operating at the maximum possible capacity.

We offer a complete range of cleaning services either at our customers site or in our facility. First of all, we inspect the equipment and question the operators to better understand what might have caused the fouling. We also analyze the process conditions and parameters. Whenever necessary we take samples and perform their analysis in our own laboratory. We test some cleaning chemicals and determine thereby the most adapted cleaning strategy. We clean heat exchangers, piping, equipment, unit or complete plant in graphite or silicon carbide but also in any other material of construction.

We provide technical assistance, planning, and coordination whenever we repair graphite and silicon carbide (SiC) process equipment. On request, we can also organize and supervise external contractors work for example during assembly, erection of start-up of equipment or units.

Industrial processes:

  • Phosphoric acid
  • Sulfuric acid
  • Hydrochloric acid
  • Hydrofluoric acid
  • Bromhydric acid
  • Crop protection
  • Fumed silica
  • Silicones
  • Titanium dioxide
  • Fine chemicals
  • Active pharmaceutical ingredients
  • Carbon steel and stainless-steel pickling
  • Copper electrolysis
  • Epichlorohydrin
  • Vinyl chloride monomer
  • Fire retardants
  • Flavors and fragrances
  • Vitamins
  • Isocyanates
  • Viscose
  • Polycarbonate
  • Coagulants
  • Treatment, purification and concentration of spent acids
  • Sulfuric acid dilution
  • and many more…

GAB Neumann GmbH

Alemannenstrasse 29

79689 Maulburg


Tel: +49 (7622) 6751 0

Fax: +49 (7622) 6751 20

GAB Neumann GmbH | Alemannenstrasse 29 | D-79689 Maulburg | Phone +49 (7622) 6751 0 | Fax +49 (7622) 6751 20 | E-Mail |