• Steel Flanges

    A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system, provides easy access for cleaning, inspection or modification. read more

  • Pipe Fittings

    The ends of all buttweld fittings are bevelled.The shape of the bevel depending upon the actual wall thickness.This bevelled ends are needed to be able to make a "Butt weld". read more

  • Steel Pipes

    Pipe is a hollow tube with round cross section for the conveyance of products. The products include fluids, gas, pellets, powders and more. read more


Today ,it is the Lantern Festival in China, the Moon in the sky is full , families also should be full . So workers have a duty off from our pipe fittings factory to get together with their family members and celebrate the festival.


Within this period, all workers left the workshop , it is the best time for our inspectors to do quality inspection for pipe fittings products, especially the X-ray test (RT) inspection for the welded pipe fittings.The RT inspection is to check the quality of the welded seam .


Haihao pipe fittings factory manufactures lots of large sizes steel pipe fittings,especially the pipe fittings more than 28″ . Commonly the large sizes pipe fittings are made from the steel plates , not from the seamless pipes directly,Cutting the plate accordingly and welding it to the fittings as per standard . As we know , when the X-ray testing is working to check the steel weld seam, it has a risk to the people around , so our X-ray testing is usually arranged in the night when the workers leave the workshop.  Last days are new year holidays in China, most of our workers stay off from factory ,but our quality inspectors are busy, they finished a lot of inspection work for our pipe fittings, which can make sure our fittings quality are perfect .

Haihao group always try our best to produce and supply the high quality piping products. Our professional quality checkers and quality assurance system support us a lot .


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haihao has been a professional supplier of pipes,fittings and flanges, serving the world industry piping since 1982.
oil and gas industry

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.
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Serving the world flowing! Aiming to be the best in the field! Improving level of “Made in China”!”

Tom , Haihao Group

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