Patent for the method of production of the pipe with cable-duct and continouos concrete coating and pipe with cable-duct (variants)

Patent for assembly for concreted pipelines joints protection

Patent for equalizing strain assembly and concrete coated pipelines joints protection form tension and impacts

Canadian Patent for pipelines protective coatings

EA for the method of protective coating production

EA for ballasting material

Method of concreted pipe with cable duct production

Patent for drive pipe

Certificate of trademark

The patent for pipeline anticorrosive protector