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Certified Welding

Certified Welding

Multimarine's reputation in providing certified welding services allows the company to be involved in numerous complex projects in the Oil & Gas and Marine Industries, both onshore and offshore. Multimarine undertakes and completes projects offshore on vessels and rigs operating in the Mediterranean region.

Multimarine Services Ltd maintains an extensive library of welding procedures supported by a team of coded welders. Some techniques used are GTAW, SMAW, GMAW, FCAW and SAW. Our welding procedures cover a wide range of approvals and are applicable on a variety of metal and metal alloys (carbon steel, stainless steel, aluminium, AISI 4130, AISI 8630, Monel 400, Inconel 718 and other exotic metals and alloys). This helps suit different types of applications such as structural steel, piping works and pressure vessels.


  • Class approvals for welding plates & pipes from ABS and DNV
  • Welding Procedure Specifications compliant with common welding points; AWS D1.1, ASME IX and ISO 15614-1, and with customer specifications where applicable
  • Welding Pipe and Plate Materials to ISO/TR15608 Group 1
  • Welding of Pipe and Plate materials conforming to APU 5L specifications (e.g. X80, X65 & X52)
  • AISI 4130 & AISI 8630 high pressure pipe welding
  • S/S Steel & Special Alloys Welding - 316L, Inconel 718, Monel 400
  • All major welding methods: GTAW, SMAW, GMAW, FCAW, SAW
  • Provision of Pre & Post Weld Heat Treatment
  • Pressure Test Capabilities up to 22,500 psi