Company News

2025-11-25

304 Square Tube Strength (Yield & Tensile Guide)

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.

More Details

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.

More Details

2025-11-21

ASME B16.5 Class 150 Weld Neck Flange Dimensions Chart (Size & Bolt Hole Table)

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.

More Details

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.

More Details

2025-11-19

Sch 80 Pipe Dimensions Chart

Schedule 80 steel pipe, often called Sch 80 pipe, is widely known for its thicker walls and higher strength compared to standard pipes. In industrial settings where pressure, temperature, and structural load are major concerns, Sch 80 becomes the preferred option. Understanding its dimensions—including wall thickness, outer diameter (OD), and inside diameter (ID)—is essential when selecting the right pipe for engineering design or procurement.

More Details

2025-11-18

SMLS Pipe OD and Wall Thickness Chart

Seamless steel pipes (SMLS pipes) are widely used in oil & gas, mechanical engineering, power generation, boiler systems, and structural applications. When engineers select a seamless pipe for a project, two parameters are always checked first: outer diameter (OD) and wall thickness. These two dimensions directly determine the pipe’s pressure rating, compatibility with fittings, and suitability for high-temperature or high-stress environments.This guide provides a practical explanation of SMLS pipe sizing and includes a clear OD and wall thickness chart to help buyers, engineers, and procurement teams make faster decisions.

More Details

2025-11-17

ERW Steel Pipe for Oil Pipelines

In the crisscrossing network of oil pipelines stretching for thousands of kilometers, a key material forms the main body of these "energy arteries"—ERW steel pipe. ERW, or resistance welding, is an efficient and economical steel pipe manufacturing process, making it one of the most widely used pipe types in the construction of onshore and offshore oil pipelines.

More Details

2025-11-14

Advantages of ERW Stainless Steel Pipes

Welded pipes are essentially circular pipes made by welding various metal or alloy strips together. Stainless steel welded pipes are such pipes, made of stainless steel. Environmental factors, water, and corrosion are considered major threats to pipe efficiency and service life. Stainless steel welded pipes are believed to eliminate these threats due to their corrosion resistance. ERW (Electric Resistance Welded) refers to a welding process where steel strips are rolled into pipes using resistance welding and then welded together. Stainless steel ERW pipes are produced from stainless steel coils (usually 304, 316, etc.) using the ERW process. ERW pipes are generally used for small to medium diameter pipes (typically ≤ 12 inches), while large diameter stainless steel pipes are mostly welded or seamless. Today, we'll introduce you to ERW stainless steel pipes.

More Details

2025-11-13

ASTM A252 Grade 3 Piling Pipe

ASTM A252 Grade 3 is the most widely used of the three grades of A252. grade 3 piling pipe has a higher load-carrying capacity and is capable of withstanding extreme loads and complex geologic conditions. It is suitable for heavy loads and demanding geological conditions. Such as large commercial buildings, large structures, offshore platforms, and large bridges.

More Details

2025-11-11

How to remedy defects in SSAW pipes?

In the installation and construction of SSAW steel pipes, if weld cracks are encountered and not detected and repaired in time, serious hidden dangers exist, especially for pipelines transporting flammable, explosive, and toxic media, where the hazards are extremely severe. What are the common welding defects in SSAW steel pipe welds? How are they formed? Common weld defects include porosity, slag inclusions, incomplete penetration, lack of fusion, and cracks.

More Details

2025-11-10

ASTM A252 vs ASTM A500 Structural Pipe

ASTM is the abbreviation for the American Society for Testing & Materials which is the governing body that publishes specifications that cover the ordering of steel, types of testing required and types of tubing produced among others. The ASTM website has a complete listing of specifications that you can search for more information.When selecting steel pipes for construction or foundation work, two common standards appear: ASTM A252 and ASTM A500.Although both define carbon steel pipes, their applications and properties are very different.

More Details

2025-11-07

CS Hollow Pipe Welding Cracks: Causes and Prevention

Cracks in carbon steel welded structural pipes primarily refer to cracks that appear during the welding process. Welding is a crucial process in metal industry production, producing industrial products with advantages such as superior craftsmanship, lower costs, and higher productivity. For example, welding is indispensable for many important metal components, including ship hulls, boilers, high-pressure vessels, and carriages.