Hebei Haihao Group

  • 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 ...
  • Hebei Haihao technical department communicates with JOINTECH Pakistan

    Hebei Haihao technical department communicates with JOINTECH Pakistan

    JOINTECH is leading inspection ISO Certified organization operating in Karachi,Pakistan offering Services for Non-Destructive Testing (NDT) & Lifting Equipment Inspection Services. RF Flange Raised Facing Requirement Engineers from Hebei Haihao communi ...
  • Hebei Haihao Group finished the IBR certificated steel pipe fittings

    Hebei Haihao Group finished the IBR certificated steel pipe fittings

    After 20days hard working,Haihao Pipe Fitting Factory finished the steel pipe fittings order from Indian boiler group. IBR CERITICATE HIGH PRESSURE PIPE FITTINGS PMI TEST IN HEBEI HAIHAO GROUP These pipe fittings materials are carbon steel and alloy steel ...
  • The IBR certificate approving process in Haihao Pipe Fitting Group

    The IBR certificate approving process in Haihao Pipe Fitting Group

    To prepare the Indian Boiler Regulations(IBR)Inspection,Haihao pipe fittings team did a lot of work for the documents,and worked together with the BV inspector in the following process: Surface Inspection: Checking 10% quantity Randomly.Mainly Checking th ...
  • How the steel pipe fittings get approved IBR certificate?

    How the steel pipe fittings get approved IBR certificate?

    For prepare Indian Boiler Regulations (IBR) inspection,Haihao Group quality inspection department do a lot of work for the documents. After that factory should work together with third party inspection,and the process for the IBR Approval it’s just a ...
  • Haihao Group showed products in Tube China 2016

    Haihao Group showed products in Tube China 2016

    Haihao Group sales department and engineers attended the 7th Tube China from 26th to 29th september.We had taken various product samples and technology data to our booth, including the steel pipes,butt weld pipe fittings,forged pipe fittings and forged fla ...
  • Tube China Fair 2016 was held in Shanghai 25th September

    Tube China Fair 2016 was held in Shanghai 25th September

    Tube China,The All-China International Tube & Pipe Industry Trade Fair, is a 4 day event being held from 26th September to 29th September 2016 at the Shanghai New International Expo Centre(SNIEC) in Shanghai,China. Haihao Group Attended Tube China Fair ...
  • NDT Test Methods used for piping products

    NDT Test Methods used for piping products

    NDT Inspection 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 for various usage. The most regular NDT methods are as follows: Penetrant Testing: ...
  • NDT application in steel pipe fittings manufacturing

    NDT application in steel pipe fittings manufacturing

    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 the material testing methods developed for inspection pur ...
  • The introduce of Tube China

    The introduce of Tube China

    Tube China full name is The All-China International Tube & Pipe Industry Trade Fair,it’s an international trade fair for piping industry and held every two years in Shanghai City.Tube China is one of the world’s largest trade fair for tube ...
  • What is NDT(Non-destructive Testing)?

    What is NDT(Non-destructive Testing)?

    Non-Destructive Testing (NDT) is used in inspecting,testing,or evaluating materials,components or assemblies for discontinuities,or differences in characteristics without destroying the pipes,fittings or flanges.It means the products can still be used when ...
  • Brazil may extend Anti-Dumping Duty on seamless steel line pipes from China

    Brazil may extend Anti-Dumping Duty on seamless steel line pipes from China

    In September 12th, 2016,Brazil is likely to extend the antidumping duty on steel pipes from China.Brazil’s foreign trade board Camex is preparing a study regarding to extend duty over imports of seamless steel line pipes products from Chinese. Brazil ...
  • Carbon steel butt weld pipe fittings from Brazil,China,Japan,Taiwan and Thailand

    Carbon steel butt weld pipe fittings from Brazil,China,Japan,Taiwan and Thailand

    In July 20, 2016,The USA International Trade Commission (USITC) deny that revoking the existing antidumping duty orders on carbon steel butt-weld pipe fittings products from China,Japan,Taiwan,Thailand and Brazil.They believe it would lead to continuation ...
  • Hebei Haihao Group attend Tube China 2016

    Hebei Haihao Group attend Tube China 2016

    The China International Tube&Pipe Industry Trade Fair hold on sept 26-29,2016 in Shanghai New International Expo Center.The Tube China is held every two years.Hebei haihao group bring the sample products and company catalogues to the exhibition.We boot ...
  • Haihao Group finished spectacle blind flange,ring spacers and paddle flanges products

    Haihao Group finished spectacle blind flange,ring spacers and paddle flanges products

    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 flanges products. Haihao Group finished carbon steel spect ...
  • Hebei Haihao Group finished supplement flange order for Exxon Mobil

    Hebei Haihao Group finished supplement flange order for Exxon Mobil

    Hebei Haihao flange factory received this supplement steel flanges order after the last flange oders of petro pipeline project of Exxon Mobil in Africa.Because of the excellent performance of our flanges in the first order,customer keep the cooperation wit ...
  • Technical specification of spectacle blind flange

    Technical specification of spectacle blind flange

    Spectacle blind flange have three types:spectacle blind flange,spade flange,spacer flange.The spectacle blind flange could cut from a plate directly,or produced by forging method. There are the techinical specification of spectacle blind flange(How to use ...
  • How to use a spectacle blind flange?

    How to use a spectacle blind flange?

    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 flanges are used in piping systems or pressure vessels where ...