Hebei Haihao Group

  • Precision tubes order for GPC are inspected

    Precision tubes order for GPC are inspected

    Hebei Haihao steel pipes department provide the precision tubes to GPC Canada as mechanical parts.The inspector from GPC visited our factory to do the trial order inspection. GPC inspector check the dimensions of the precision tube in HAIHAO GPC (Genuine P ...
  • Haihao group is replacing Natural Gas furnace

    Haihao group is replacing Natural Gas furnace

    Because of the heavy fog and haze in north of China,government is controlling the industry production of Hebei province,China.Many piping products factories are limited and temporary shutdown by government.(The effect of haze on the steel industry in north ...
  • The effect of haze on the steel industry  in northern China

    The effect of haze on the steel industry in northern China

    If you live in northern China,you have to put mask on,because it’s smoggy.The haze not only brings harm to the human body,but effect the steel industry in this area. Air pollution from steel pipe manufacture First,many steel companies and steel pipe ...
  • New Tube sheets for heat exchangers are going to finished in Haihao Group

    New Tube sheets for heat exchangers are going to finished in Haihao Group

    Hebei Haihao Group is busy producing in the 20 pieces tube sheets.This’s the second phase of the tube sheets order used in heat exchangers,these products will be installed in Australia.(Client Inspect Tube Sheets Quality and Production In Haihao Grou ...
  • What is the difference between working,burst and proof test pressure

    What is the difference between working,burst and proof test pressure

    For a piping component,it will have a working pressure,proof test pressure and burst pressure.What is the difference between these pressure specifications for pipe fittings products? Forged steel flange hydro pressure test The working pressure is the worki ...
  • The EU imposed anti-dumping duties for stainless steel pipes and fittings from China

    The EU imposed anti-dumping duties for stainless steel pipes and fittings from China

    January,27th,the European Union(EU) decided to impose definitive anti-dumping duties on imports of the steel products from China and Taiwan to protect struggling steel manufacturers in Europe. Stainless steel tubes and butt welding pipe fittings manufactur ...
  • Haihao Group finished the customized flange collar order used in Europe

    Haihao Group finished the customized flange collar order used in Europe

    Flange Collar is a kind of fittings,people also called it stub end.Flange collar products are working together with lap joint flange(Loose Flange),which are according to EN standard and DIN standard. Flange Collars For Lap Joint Flange There are different ...
  • Haihao Factory is producing 180 degree bends for Pakistan Petro Pipeline

    Haihao Factory is producing 180 degree bends for Pakistan Petro Pipeline

    Hebei Haihao Pipe Fitting Factory succeeded in experimenting and manufacturing the 5D heat induction pipe bends,the products’ size from DN400 to DN500 and the radius in 180 degree.To get this tender from Pakistan and meet the tolerance requirements o ...
  • Haihao Flange Factory Finished High Pressue and Large Size Flanges On Time

    Haihao Flange Factory Finished High Pressue and Large Size Flanges On Time

    Haihao Flange Factory finished high pressure and large size flanges on time,the products are used for TOTAL(Total S.A.) projects in Africe,and which are ready for shipment. Forged Weld Neck Flanges Finished In Haihao Flange Factory We received the flange o ...
  • Haihao Group finished the 50D radius pipe bends used for steel structure

    Haihao Group finished the 50D radius pipe bends used for steel structure

    Hebei Haihao Group manufactures steel piping products,like the pipes,fittings and flanges which are used not only in the fluid system,pipelines,vessels,but also the mechanism,structure. 50D Radius Pipe Bend Used For Steel Structure In Haihao Group For exam ...
  • Hebei Haihao Group is working hard to finish orders before Chinese New Year

    Hebei Haihao Group is working hard to finish orders before Chinese New Year

    The Chinese New Year is coming,Haihao factory and staffs are working hard to finish all the goods on time.All clients also want their steel pipes,fittings and flanges products to despatch before the long time new year holidays. Forged Weld Neck Flanges In ...
  • Client Inspect Tube Sheets Quality and Production In Haihao Group

    Client Inspect Tube Sheets Quality and Production In Haihao Group

    Hebei Haihao Group received the order request of large size tubes sheets products,and we are producing the tube sheets now.Our clients are leading engineering company,the tubes sheets diameters are around 4 meters,will be used for high capacity heat exchan ...
  • The information about JIS B2220 flange products tolerance

    The information about JIS B2220 flange products tolerance

    JIS B2220 flange products,JIS B2220 flange products tolerance-Hebei Haihao Group After more than 30 years development,Hebei Haihao Group obtained the recognition from the clients and end users of domestic markets and all over the world.We have world-famous ...
  • The introduce about JIS B2220 flanges products

    The introduce about JIS B2220 flanges products

    JIS B2220 Products | JIS B2220 flanges products | JIS B2220 flange products manufacturer-Hebei Haihao Group Haihao Group established in 1982,is one of the biggest flange and pipe fittings manufacturers in China.We manufacture the pipe fittings and flanges ...
  • What are JIS B2220 Standard Products?

    What are JIS B2220 Standard Products?

    JIS B2220 is Japanese Industrial Standard,it’s one of the international standards.The JIS B2220 Standard Products contain pipe fittings and flanges products.This standard specifies steel pipe flanges of normal size 10A to 1500A for normal pressure 5K ...
  • Certain Pup Joints for Oil & Gas Pipeline Expiry Review Decision

    Certain Pup Joints for Oil & Gas Pipeline Expiry Review Decision

    November 30, 2016,Canada Border Services Agency (CBSA) determine the Oil country tubular goods pup joints made in China will keep the anti-dumping tax,to project the steel pipeline industry of Canada. OCTG Coupling Joints For Oil & Gas Pipeline Manufac ...
  • How to reduce the risk of intergranular corrosion and test it

    How to reduce the risk of intergranular corrosion and test it

    The intergranular corrosion(intergranular attack) usually progresses along a narrow path along the grain boundary and in a severe case of grain-boundary corrosion,entire grains may be dislodged due to complete deterioration of their boundaries.In any case ...
  • The standards and methods for intergranular corrosion test

    The standards and methods for intergranular corrosion test

    This part of ISO 3651 specifies methods for the determination of the resistance to intergranular corrosion of ferritic,austenitic and ferritic-austenitic (duplex) stainless steels in media containing sulfuric acid.It also specifies the purposes which may b ...
  • What is intergranular corrosion in metal material?

    What is intergranular corrosion in metal material?

    When the stainless steel pipe fittings or forged steel flange products are manufactured in our factory,we should keep attention to the intergranular corrosion of such piping products.The microstructure of metals and alloys are made up of grains,and they ar ...
  • SGS carried out Intergranular Corrosion Test to stainless steel elbows of Haihao Factory

    SGS carried out Intergranular Corrosion Test to stainless steel elbows of Haihao Factory

    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 Inspectoe Tested Our A403 WP321 Elbows These pipe fittings will be used in high ...