Hunan Haihengda Metal Material Co.Ltd(HHD Steel), as the most valuable subsidiary under SINON STEEL, is steel pipes and fittings solution provider for oil,gas construction, energy and petrochemical industries.

We started business on Steel Pipe(Welded Pipe, Seamless Steel Pipe, OCTG product, Rectangular Steel Pipe and Galvanized Steel Pipe)exporting since foundation of 2006.

With decades of development and appreciate customers’ support and trust, our business range expand to Pipe Fittings(Flange, Elbow, Tee, Reducer, Caps, Bends, Laps, Forged fittings and Galvanized series)quality suitable for high-pressure, medium-pressure, low-pressure, carbon,alloy, Austenite stainless and so on.

Moreover, we help to do further processing such as anti-corrosion,zinc plating,copperplating, hot expanding, bending, diameter reducing, heat treatment, internal boring&external grinding, precise lathing&boring, precise cold-drawn and surface carburizing are provided accordingly as well.

HHD Steel can fulfill dozens of Chinese&international standards(GB, API, ASTM, SAME/ANSI,BS, DIN, JIS, GOST), and customize products with special technical protocols required by our clients. We ensure the superior quality products by perfect supervising system, protects the interests of our clients by avant-garde after-sales service, thus we are keep long term business relationship with most of our clients.

In the future, we well continue providing one -stop procurement services, ensure customers purchasing to the highest ratio of steel. Hope can use SINON STEEL to Build a shining world.