Company News

• 2025-12-05

  How Long Does HDG Last?

  The service life of（HDG）hot-dip galvanizing is typically 20–50 years or more, and can even exceed 70–100 years in dry, low-corrosion environments. Its actual lifespan depends primarily on the thickness of the galvanized layer, the corrosiveness of the environment (e.g., urban, industrial, coastal, underground), the quality of construction, and whether a subsequent coating is used. Overall, hot-dip galvanizing is a long-term corrosion protection solution that can cover the "full life cycle" of most projects, providing stable rust protection for decades in normal outdoor environments.

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• 2025-12-04

  ASTM A312 Stainless Steel Pipe Pressure Rating (304/316)

  ASTM A312 is a widely used specification for austenitic stainless steel pipes, covering both seamless and welded (ERW) types.The standard applies to grades 304, 304L, 316, and 316L, which are commonly used in high-temperature, high-pressure, and corrosion-resistant applications across industrial, chemical, food processing, and petrochemical sectors.In piping system design, the pressure rating (also known as allowable working pressure) is one of the most critical parameters, as it determines the pressure a pipe can safely withstand under a given temperature and wall thickness.

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• 2025-12-03

  Spiral Welded ASTM A252 Pipe Specifications

  SSAW steel pipe, also known as spiral submerged arc welded steel pipe, is a type of spiral welded steel pipe produced using a double-sided submerged arc welding method. Spiral welded pipe is made from narrower plates or hot-rolled coils, significantly reducing production costs. The spiral welding process allows for the production of large-diameter pipes, suitable for transporting large quantities of oil and natural gas. There are many standards for SSAW steel pipe, such as API 5L, API 5CT, ASTM A252, ASTM 53, EN10217, EN10219, BS, JIS, and IS. Today, we will introduce the specifications of SSAW steel pipe according to ASTM A252.

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• 2025-12-02

  Stainless steel SCH 40S Pipe chart

  Stainless steel pipe is a widely used pipe material in industries such as manufacturing, construction, chemical, and pharmaceuticals. It is highly favored due to its advantages such as corrosion resistance, high temperature resistance, and high strength. Sch40S is a specification of stainless steel pipe, so what is its wall thickness?

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• 2025-12-01

  Choosing the Right Wall Thickness for Galvanized Pipes

  Galvanized steel pipes come in a wide variety of specifications and are suitable for different engineering fields and pressure ratings. Below are some common galvanized steel pipe specifications and their corresponding standard ranges for wall thickness. However, please note that the specific wall thickness standards may vary depending on the country and region standards. The ranges provided here are approximate.Schedule 40 Galvanized Pipe is popular because it provides adequate wall thickness for most plumbing, water supply, and light industrial applications.

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• 2025-11-28

  What is API 5L standard SSAW steel pipe?

  API 5L SSAW steel pipes are designed for long-distance transportation of media such as oil and gas. They are formed through the spiral process and welded using techniques like submerged arc welding (SAW), combining advantages of large diameters, long-distance capabilities, and cost-effectiveness. The standards are categorized into PSL1 and PSL2 based on product specification levels: PSL1 covers general-purpose applications, while PSL2 imposes stricter requirements on chemical composition, toughness, non-destructive testing, and uniformity control, making it suitable for higher-demand operating conditions. The steel grade system ranges from GR.B/L245 to X100, with commonly used grades in engineering including X42, X52, X60, X65, X70, and X80. Notably, designations like L245M indicate thermomechanical controlled processing (TMCP) steel, which offers superior low-temperature toughness and weldability. Engineering specifications often reference both domestic and international standards such as GB/T 9711 and SY/T 5037 to facilitate alignment with international projects

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• 2025-11-27

  What Is ASME SA105 Material?

  ASME SA105 is one of the most widely used standards for forged carbon steel components in pressure-piping, pressure-vessel and valve systems. In essence, SA105 defines the chemical composition, mechanical properties, heat treatment and workmanship criteria for forged carbon steel flanges, fittings, nozzles, valves and other pressure-containing components — typically used in applications with ambient to elevated temperatures and various pressures.

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• 2025-11-26

  Understanding Schedule 40 Seamless Pipe Pressure Capacity

  In industrial piping systems, "Schedule 40" (often simply referred to as Sch 40 or STD) is an extremely common pipe wall thickness grade. When combined with "seamless steel pipe," it forms the backbone material in many critical applications. Understanding the pressure ratings of Schedule 40 seamless steel pipe is essential for ensuring the safe, reliable, and efficient operation of systems.

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• 2025-11-25

  Strength Standards for 304 Stainless Steel Square Tubes

  In practical applications, high strength indicates that the material is less prone to deformation and breakage (cracking) under static loads; it also typically exhibits good hardness and wear resistance. Therefore, materials requiring high hardness and wear resistance are typically made from high-strength materials. This article introduces the strength standards for 304 stainless steel square tubes.

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• 2025-11-24

  SCH 40 vs SCH 80 Steel Pipe Pressure Rating

  First of all, the word schedule stands for the wall thickness of a pipe, sometimes referred to by the acronym sch. It’s a way of categorizing the wall thickness of a pipe that was developed by the American National Standards Institute (ANSI), and the larger the number after the schedule, the thicker the pipe’s walls are and the more pressure it can withstand.

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• 2025-11-21

  What Is an ASME B16.5 Weld Neck Flange?

  ASME B16.5 is an American standard applicable to pipe flanges and flange fittings, and it enjoys high recognition worldwide. ASME B16.5 is also the American standard for the production of stainless steel weld neck flanges, and it belongs to the American Society of Mechanical Engineers (ASME) standards for piping and piping components. This standard specifies the requirements for the dimensions, materials, pressure ratings, and temperature ratings of weld neck flanges used in piping systems.

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• 2025-11-20

  Steel Grades for Well Pipe Casing

  In oil and gas engineering, well pipe casing plays a decisive role in keeping a well stable from drilling to production. Although people often focus on drilling tools or surface equipment, the casing system is the part that quietly supports the entire wellbore. Once a casing string fails, the well may suffer severe production loss — and in extreme cases, be completely abandoned.

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