• Corporate vision to become the pipeline industry Toyota
  • Corporate mission to enhance the quality level of Chinese manufacturing
  • Business goals domestic industry first

Stock control

In haihao,we keep a lot of stocks of steel pipes, fittings and flanges in high quality from 1/2 to 24 inches in our warehouse and our factories . All dimensions and materials are as per the China standard or international standard like ANSI , ASTM , ASME , JIS , DIN , EN , GOST etc.The main materials are carbon steel and stainless steel .

We prepare our stocks according to request of the distributor and the clients. If our clients told us their needs of next months. we can prepare the products in stock in advance. then we will provide the piping products to our clients or to the project site in time.

Test and inspection

In haihao, we carry out the regular testing and inspection for our steel pipes,fittings and flanges. we also can provide supplemented testing as per the request of our clients:







Tensile strength test.

Yield test.

Impact test.

Bending test.

Hardness test.

Moreover Special testing is never a problem. with our labs and inspectors ,our company can supply test and inspection services for your ordered products or other products. We also accpet any third party inspection ,like BV, ABS, SGS, LR etc.