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haihao has been a professional supplier of pipes,fittings and flanges, serving the world industry piping since 1982. as a leading manufacturer,stockist and supplier, our knowledgeable and experienced technical team can understand well what you need . help you find the best solution for your regular and specific requirement.

Each industry has its own unique set of material specification needs and standards. The following is a list of the industry sectors we serve:

Oil & Gas development

Haihao has developed a good knowledge team of the oil and gas industry which our clients involved. we provide pipes, fittings, flanges and other oilfield supplier to the production plant. Our piping products are used in the hardest applications in the oil and gas industry, whether you are processing oil sand, sour crude or other petroleum.


Power plant

Our piping products are used in the power plant for piping products, in the new construction, repair, replacement, maintains and operation. Our products are in the application of above and below ground projects including recirculating water lines, risers to cooling towers, water supply pipes, water discharge pipes etc.


Chemical industrial

Haihao can supplies chemical processing plants with a complete inventory of pipes, fittings, and flanges in carbon steel, stainless steel and special alloys as part of our commitment to providing solutions for potentially extreme pressure, temperature and corrosive environments. Also other relevant products which are needed by the projects, we also know how to use them properly.


Shipbuilding & Offshore

Haihao has got the approved certificate of the shipping bureau of different countries. For example, ABS( American Bureau Of Shipping ), BV(Bureau Veritas),CCS(China Classification Society). Those qualification could help us serve better to the ship yard.


Steel constructions

Haihao are offering wide range of quality piping products for the steel construction industry,including the steel pipes, pipe fittings, flanges, relevant connections etc. Our products are widely used in different projects because of our high quality and reputation. From common needs to exact requirements for on site construction or piping fabrications, our experienced engineers and workers will help our clients to meet their needs.


Water treatment

According to the different requirement of our clients, haihao can supply specific and customized products to meet their needs, in different material, different specification, different coating request for potentially extreme pressure, temperature and corrosive environments.