Our certifications

Assuring quality

SWR is synonymous with reliable, high-quality service provision for its customers. In addition to a great potential of experience, the foundation for this service provision is extensively trained technical staff.
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New technologies and work and machine methods require regular further training for our employees. This ensures we are always at the cutting edge of technology. This builds trust among our customers.
Oliver Lipp
Head of Machinery and Equipment

SWR certifications

DVGW GW 301

As per DVGW GW 301: Gas and water pipelines for all pressures and nominal sizes; certifications: G1 ge-pe-st, W1 ge-pe-pvc-st

DVGW GW 302

As per DVGW 302: Group R 2, renewal of gas and water pipelines by pipe pull-in or pipe insertion with annular space as per GW 320-1

AGFW FW 601

District heating pipelines for hot water systems of all nominal sizes, all delivery temperatures and all delivery pressure stages as per AGFW FW 601 Group FW 1: DK, ku, st

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DVGW TRGI G600

Authorised specialist in building gas installations

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Quality seal

Underground cable line construction RAL GZ 962/2

Quality seal

Liquid soil RAL GZ 507 A1, H1

Quality seal

Soil construction RAL GZ 961 AK 2

ISO 9001 certificate

Introduction and use of a quality management systems as per EN ISO 9001:2015; area of application: Project engineering and implementation in civil engineering and pipeline construction and in electrical and telecommunications system construction

ISO 3834-2 certificate

Introduction and use of a management system as per EN ISO 3834-2; area of application: Project engineering and implementation in civil engineering and pipeline construction and in electrical and telecommunications system construction

Pressure Equipment Directive certificate from TÜV Hessen

Qualification as per EN ISO 3834-2: 2006 in conjunction with AD 2000 data sheet HP 0/HP100 R and EN 13480-4:2013

TÜV Hessen

Qualification of welding procedures as per EN ISO 15614-1, DVGW GW 350, AFGW FW 432, AGFW FW 446

TÜV Hessen

Specialist company as per German Water Resources Act based on Section 62 German Regulations on Installations Handling Substances Hazardous to Water (AwSV)

SCC certificate***

Introduction and use of an SCC** safety, health and environment management system; area of application: Project engineering and implementation in civil engineering and pipeline construction and in electrical and telecommunications system construction in operational plants

Umweltinstitut Offenbach

Asbestos demolition and maintenance work as per TRGS 519 Appendix 4c

Our employees’ qualifications

  • Steel welder as per EN ISO 9606-1
  • Sheather trained as per DVGW Work Sheet GW 15
  • Pipelayer in plastic pipeline construction trained as per DVGW Work Sheet GW 326
  • PE welder trained as per DVGW Work Sheet GW 330
  • Welding supervisor trained as per DVGW Work Sheet GW 331
  • Welding engineers trained as per EN ISO 14731
  • Managers and executives trained as per SCC**
  • Occupational health and safety specialist
  • Safety officer
  • First aider as per BGV A1
  • Measurements as per DVGW Work Sheet GW 128
  • Certified general foremen
  • Trained civil engineering and pipeline construction workers
  • Person instructed in electrical engineering as per BGR A3
  • Specialist as per German Water Resources Act based on Section 62 German Regulations on Installations Handling Substances Hazardous to Water (AwSV)
  • Liquid soil specialist
  • Specialist as per DVGW Work Sheet GW 129
  • Lineworkers up to voltage level of 30 kV
  • NDT2 tester as per EN ISO 9712
  • TRGS 519 Asbestos
  • Instructed personnel as per RSA (ZTV-SA 97 MVAS 99)