Hebei Haihao Group

  • ASME material standards commonly used in stainless steel pressure vessels

    ASME material standards commonly used in stainless steel pressure vessels

    For stainless steel pressure vessels, when designing according to ASME VIII – Ⅰ, the commonly used material standards for plates, pipes, forgings, bolts, and nuts can be found in ASME II Part A, mainly including the following: stainless steel pressur ...
  • What is pressure vessel heads and sealing devices?

    What is pressure vessel heads and sealing devices?

    Pressure vessels are critical components in various industries, designed to hold gases or liquids at high pressures. One of the most important aspects of their design is the selection and integration of heads and sealing devices. These elements ensure the ...
  • Haihao Group's commitment to monitoring raw material market trends and sharing insights with clients

    Haihao Group’s commitment to monitoring raw material market trends and sharing insights with clients

    At Haihao Group, we understand the critical importance of staying updated with market trends, particularly in the raw materials sector, to better serve our clients and ensure optimal operational decisions. A recent iron ore market report from June 29 to Ju ...
  • What is hydrostatic testing and the key factors to consider in hydrostatic testing?

    What is hydrostatic testing and the key factors to consider in hydrostatic testing?

    Hydrostatic testing is a crucial method used to evaluate the integrity and pressure-holding capacity of pipes, vessels, or components. This process involves filling the test object with water and applying a specific pressure to assess its sealing performan ...
  • Pipeline prefabrication: Haihao Group's secret to improving efficiency and quality

    Pipeline prefabrication: Haihao Group’s secret to improving efficiency and quality

    Pipeline prefabrication is a process in which the various parts of the pipeline system are pre-processed, assembled and welded into modules or sections in a factory environment. These prefabricated modules or sections are then transported to the installati ...
  • Haihao Group focuses on the global steel market trends

    Haihao Group focuses on the global steel market trends

    At Haihao Group, we understand the importance of staying updated with the latest trends and data in the steel raw materials market. By sharing relevant industry information, we aim to keep our clients informed and help them make well-informed decisions. He ...
  • The difference between soft seal and hard seal in butterfly valves

    The difference between soft seal and hard seal in butterfly valves

    Butterfly valves are widely used in various industries for their efficient flow control and compact design. A crucial aspect of their functionality is the sealing mechanism, which ensures the valve’s ability to prevent leakage. There are two primary ...
  • A comprehensive guide to the API 5L GR.B ERW pipes

    A comprehensive guide to the API 5L GR.B ERW pipes

    The API 5L GR.B ERW pipes are widely used material in the oil and gas industry. This pipe specification is designed to meet the stringent requirements for transporting natural gas, oil, and other fluids in both onshore and offshore applications. In this ar ...
  • Understanding the difference between HIC and SSC in material testing

    Understanding the difference between HIC and SSC in material testing

    In the field of material science and engineering, the integrity and durability of materials used in harsh environments are critical. Particularly in industries such as oil and gas, where equipment is constantly exposed to corrosive conditions, understandin ...
  • What are the three types of hardness tests?

    What are the three types of hardness tests?

    Hardness is a measure of a metal material’s resistance to localized deformation, particularly plastic deformation, indentation, and scratching. Higher hardness often implies better wear resistance. The hardness value depends not only on the material& ...
  • Enhancing petrochemical equipment maintenance: The

    Enhancing petrochemical equipment maintenance: The “one removal and four injections” technique

    Effective maintenance of petrochemical equipment is crucial to ensure its longevity and efficiency. One of the key maintenance strategies employed in the industry is the “One Removal and Four Injections” technique, which plays a significant rol ...
  • Analysis of the future market of hot and cold rolled coils

    Analysis of the future market of hot and cold rolled coils

    Since entering June, the domestic cold and hot rolled coil market has not improved significantly. The market transaction is generally sluggish, and the prices of cold and hot rolled coils are fluctuating. Traders are generally cautious and optimistic about ...
  • Haihao Group excellent valve manufacturing and quality control

    Haihao Group excellent valve manufacturing and quality control

    At Haihao Group, we pride ourselves on our meticulous manufacturing processes and stringent quality control measures, particularly in the production of pressure pipeline components such as valves. Our commitment to excellence ensures that every valve we pr ...
  • Analysis of hot and cold rolled coil prices in the coming months

    Analysis of hot and cold rolled coil prices in the coming months

    As we enter June, the domestic market for hot and cold rolled coils remains stagnant, with trading activity showing little improvement. Currently, most traders are adopting a cautious outlook towards the future market trends. Recent Price Trends: In early ...
  • The differences between straight threads and tapered threads

    The differences between straight threads and tapered threads

    In the world of engineering and piping systems, threads play a crucial role in ensuring secure and reliable connections. Among the various types of threads, straight threads and tapered threads are two of the most commonly used. Understanding their differe ...
  • Haihao Group delivers high-quality ASME B16.9 pipe fittings to UK customer

    Haihao Group delivers high-quality ASME B16.9 pipe fittings to UK customer

    Haihao Group is proud to announce the successful delivery of a batch of premium pipe fittings to our valued customer in the United Kingdom. This shipment includes ASME B16.9 90° long radius elbows, ASME B16.9 45° long radius elbows, ASME B16.9 caps, and AS ...
  • Introducing Haihao Group's premium ball valves for Indonesian client

    Introducing Haihao Group’s premium ball valves for Indonesian client

    Haihao Group is delighted to announce the successful production of a custom order for our esteemed Indonesian client. This order includes high-performance ball valves and associated components, crafted to meet stringent specifications and industry standard ...
  • The premier ASME B16.9 products for Singapore's industrial needs

    The premier ASME B16.9 products for Singapore’s industrial needs

    At Haihao Group, we pride ourselves on delivering the highest quality industrial piping components to our esteemed clients worldwide. Today, we are thrilled to announce the successful production of a range of ASME B16.9 products specifically tailored for o ...
  • Haihao Group allows you to keep abreast of changes in raw material prices in the steel market

    Haihao Group allows you to keep abreast of changes in raw material prices in the steel market

    At Haihao Group, we prioritize keeping our clients informed about the latest trends and changes in the raw material market. Understanding these fluctuations helps our clients make informed decisions, optimize their procurement strategies, and manage costs ...
  • Haihao Group ships to Russian customers and collaborates to cast high-quality pipe fittings

    Haihao Group ships to Russian customers and collaborates to cast high-quality pipe fittings

    Haihao Group is proud to announce the successful shipment of a batch of high-quality pipeline products to our esteemed Russian customers. The products shipped this time include: ASME B16.9 45 ° And 90 ° Elbow LR ASTM A420 Grade WPL6 ASME B16.9 Tee ASTM A42 ...