• 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

Sometimes we are always hesitant on the pipe fitting selection criteria. How to select the pipe fitting in a right way or how to choose the best manufacturer/product become a big problem. Therefor haihao pipe fitting group sum up a sreious of criteria you may used.
Here is the selection criteria for steel pipe fitting buyers:

hebei-haihao-pipe fittings

hebei-haihao-pipe fittings

1 Pipe materials
2 Pressure Ratings
3 Design and operation
4 Safety information
5 Temperature
Buyer’s assistance:
Before purchasing pipe fittings and flanges, certain questions need to be answered for that particular pipe fitting and the manufacturer who is manufacturing that particular fitting. Some of these questions are as follows:
Can it handle pressure?
Can it handle high temperature?
Does it have proven long-term performance?
Are the joints or seals reliable?
Can it be fitted properly?
Does it have confidence of manufacturers?
Can it withstand outdoor storage and ultraviolet rays?
Can it resist punctures and abrasion?
Does it have widespread approval and acceptance from inspectors and engineers?
Does it have quality and value?
The more the number of “YES”, the better your product is. Of course, if you have any question, do not hesitate to contact us. By the way, you’d better email us or call for help if you are impatient.
Our sales manager: sales@haihaogroup.com or call 0086-18132299399 /fax to 0086-317-6838996. we are in chat at 7*24 hrs.


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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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