O&K boiler company has a team consisting of technically competent boiler maintenance engineers and professional technicians with years of experience, who can carry out professional testing, maintenance, fixing up and cleaning of marine boilers, heat exchangers, pressure vessels and other equipment. Our team also has rich experience in on-site operation, especially in welding, which is outstanding and can reach 100% of the Ray and UT flaw detection. They also have been accredited WPS certification by several classification societies such as LR,NK, DNVGL,ABS,CCS etc. O&K Marine comp...