BENMAR Fabrication has an extensive background in the manufacturing of ASME PVHO pressure vessels. We have incorporated our knowledge from the manufacturing of PVHO vessels for the diving industry into the demanding requirements and environment of the tunnel boring market.                                                                                  

BENMAR Fabrication holds an ASME ‘U’ stamp and all our welders are certified to ASME section IX.  Our Professional engineering team has all the tools necessary for the design and certification of your vessel to the requirements of ASME PVHO. 

Whether you are looking for a material lock, man lock or a decompression chamber for your tunnel boring application, BENMAR and its professional team is able to assist.