Hebei Haihao Group applies for type approval of DNV GL classification society

DNV GL certification is the certification of det Norske Veritas, and DNV GL certification is an independent third-party organization. DNV GL, BV and ABS are called the three major classification societies.

After Hebei Haihao Group obtained BV and ABS Type Approval certificate.In order to further expand the business of pipe fitting flange products.Submitted an application for DNV GL classification society certification.

Accompanied by Group’s leaders, the surveyor preliminarily inspected the products and production equipment, and witnessed a series of production processes such as flange forging process, heat treatment, machining, marking, painting and packaging.

Flange forging

At the same time, also witnessed a series of tests, including the pipe fittings hydrostatic pressure 7MPa test.

Pipe fittings hydrostatic pressure test

In the next few days, witnessed the impact test and mechanical property test (tensile strength, yield strength and elongation) of raw materials.

Things are going well.Let’s look forward to DNV GL type approval certificate

Impact test

Specimens for mechanical properties testing

Mechanical property test