When the stainless steel pipe fittings or forged steel flange products are manufactured in our pipe fitting factory,we should keep attention to the intergranular corrosion of such piping products.The ...

Septermber 29th,inspector from SGS carried out the third party inspection to our stainless steel butt welding pipe fittings in Haihao Pipe Fitting Factory before shipment.
SGS Inspector Tested Our A40...

Engineers from Hebei Haihao communicated with inspectors of JOINTECH about the new oil & gas project in Iraq.The meeting is focus in how to inspect the flange facing of RF(Raised Face) flanges,inc...

After 20days hard working,Haihao Pipe Fitting Factory finished the steel pipe fittings order from Indian boiler group.Those products get the IBR certification.(How the steel pipe fittings get approved...

In order to get the Indian Boiler Regulations(IBR) Certification(How the steel pipe fittings get approved IBR Certificate),Haihao pipe fittings team did a lot of work for the documents,and worked toge...

For prepare Indian Boiler Regulations (IBR) inspection,Haihao Group quality control department do a lot of work for the documents.
After that factory should work together with third party inspection,a...

Hebei Haihao Flange Factory received the high pressure flanges order and finished the products on time.But before the packing and shipment,NDT inspection is important too.(NDT Test Methods used for pi...

Non-Destructive Test(what’s NDT) is a important method in quality control of the piping products.There are many NDT methods used in our steel pipings production.They have different characters fo...

To improve manufacturing quality and product reliability,components and structures are regularly inspected for defects or faults which may reduce their structural integrity leading to failure.Among th...

Nondestructive testing (NDT) is used in inspecting,testing,or evaluating materials,components or assemblies for discontinuities,or differences in characteristics without destroying the steel pipes,but...

In our new flanges order of Oil Gas pipeline project of Africa,the flanges sizes are from 10″ to 36″.Haihao Flange Factory produced all the weld neck flanges,blind flanges and spectacle fl...

Hebei Haihao Flange Factory received this new steel flanges order,it’s the supplement of our last  flanges order of petro pipeline project of Exxon Mobil in Africa.Because of the excellent perfo...

The spectacle blind flange could cut from a plate directly,or produced by forging method.There are the techinical specification of spectacle blind flange in Haihao Group(Types of spectacle flanges):
S...

There are three types of spectacle flange:spacer,spade(paddle flange),spectacle blind flange.A spectacle blind flange is a combination of a spade and a spacer.
All these three types of spectacle flang...

The spectacle blind flange is a safety device used to isolate a section of pipeline or equipment when they need to be inspected or removed from piping system.
The spectacle flanges have three types:
S...

Hebei Haihao Group grooved pipe fittings contain:grooved coupling,grooved tee,gooved elbow,grooved flange and so on.The grooved pipes and fittings means the steel pipes or fittings have a groove on th...

Bevel end is one of the most common pipe ends for the steel pipe and pipe fittings.The bevel end has a lean angle with the pipe surface and suitable for butt welding joints.The bevel end also could be...

A butt welding pipe fitting means a pipe fitting which has the connecting end for butt welding(bw).Hebei Haihao Group have more than 30 years production experience about the butt welding pipe fittings...