Company News

2025-10-17

Difference Between C Channel and I Beam

In steel structure construction, choosing between C-shaped steel (C Channel) and I-shaped steel (I Beam) is a critical decision, as it directly impacts both structural safety and cost.While both types of steel are commonly used load-bearing components, they differ significantly in cross-sectional shape, load-bearing capacity, stiffness, and applicable range.

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2025-10-16

What’s the difference between HFW and LSAW pipes?

In the modern steel pipe industry, two of the most commonly used types of welded pipes are HFW (High-Frequency Welded) pipes and LSAW steel pipes. Both play critical roles in the oil and gas, construction, and infrastructure sectors, but their manufacturing processes, performance characteristics, and applications differ significantly.

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2025-10-15

ASTM A53 pipe bend and flattening test

When purchasing ASTM A53 welded or seamless steel pipe, customers are always most concerned about: Is the pipe reliable? Can it withstand the pressure and deformation under actual service conditions? The ASTM A53/A53M standard not only specifies chemical composition and mechanical properties but also clearly defines two key physical tests: the bend test and the flattening test. These two tests directly verify the ductility, toughness, and weld quality of the steel pipe, preventing serious accidents such as breakage and leakage during use.

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2025-10-14

Flange Connections and Production Standards

A flange connection involves securing two pipes, fittings, or equipment to a flange. A flange gasket is placed between the two flanges and bolted together to complete the connection. Some pipe fittings and equipment already have built-in flanges, which also constitute a flange connection. Flange connections are a key connection method in pipeline construction.

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2025-10-14

What is Circular Hollow Section (CHS)?

In modern engineering construction and machinery manufacturing, a seemingly simple yet crucial material—circular hollow section (CHS)—plays an indispensable role. Whether it's the skeleton of a skyscraper, the support of a cross-sea bridge, or the structure of an automobile chassis, CHS, with its unique circular hollow section design, perfectly balances the two core requirements of lightweighting and high strength.

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2025-10-13

Hot Pressed Elbow VS Stamped Elbow

Elbows are pipe fittings used at pipe bends. Common processes for forming seamless elbows include hot pressing, stamping, and extrusion. Do you know the difference between hot-pressed and stamped elbows? Let's take a look!

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2025-10-11

How to Extend the Service Life of Seamless Steel Pipes

With the rapid development of the construction industry, the demand for seamless steel pipes is increasing. When using these products, people hope to fully utilize their capabilities, increase their utilization rate, and extend their service life. How to effectively extend the service life of seamless steel pipes is a question that many people are concerned about.

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2025-10-10

What is the difference between HSS and SHS?

Hollow structural sections (HSS) have become an indispensable material in modern construction and engineering. HSS is a broad term encompassing structural steel tubes of various cross-sectional shapes, including square, rectangular, circular, and oval shapes. These hollow sections are manufactured through cold-formed forming and welding processes, resulting in structural members with a hollow cross-section that combine lightweighting with high strength. In contrast, square hollow sections (SHS) are a specific subcategory of HSS, specifically those with a square cross-section.

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2025-10-10

Daily maintenance and care of valves

For operating valves, all internal components must be complete and intact. Bolts on flanges and brackets are essential, and threads must be intact and free of looseness. If the handwheel fastening nut is found to be loose, it must be tightened promptly to prevent wear on the joints or loss of the handwheel and nameplate. If a handwheel is lost, an adjustable wrench must not be used as a replacement; it must be promptly replaced. The packing gland must not be skewed or lack preload clearance. For valves exposed to rain, snow, dust, wind, and other contaminants, a protective cover must be installed on the valve stem. The scale on the valve must be intact, accurate, and legible. Valve seals, caps, and pneumatic accessories must be complete and intact. The insulation jacket must be free of dents and cracks.

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2025-10-09

Hollow Structural Section (HSS) Advantages in Construction

HSS beams stand out for their exceptional strength-to-weight ratio, making them well-suited for a variety of architectural applications. Available in round, square, and rectangular shapes, these beams are ideal for a wide range of applications due to their high turning radius around both axes.The closed HSS design improves torsional resistance and is available in wall thicknesses ranging from 3 to 16 mm. Architects and engineers often choose HSS for trusses, columns, and exposed structures. Its smooth surface and rounded corners enhance visual appeal and require less coating.

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2025-09-30

LSAW Steel Pipe Manufacturers

LSAW steel pipe is a steel pipe product made from a small steel plate, double-sided submerged arc welded and expanded using pressure from a die or forming machine. This type of pipe offers a wide range of specifications, excellent weld toughness, superior ductility and uniformity, and high density. It exhibits significant advantages in large diameters, thick walls, high-pressure resistance, and low-temperature corrosion resistance.

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2025-09-29

ASTM A252 Grade 2 vs Grade 1 piling pipe

Behind skyscrapers soaring and sea-crossing bridges spanning chasms, hidden and unseen, the foundation piles silently bear the brunt of the effort. Among them, welded steel pipe piles conforming to the ASTM A252 standard have become a workhorse in modern foundation engineering due to their excellent mechanical properties and relative cost-effectiveness. Within this standard, the choice between Grade 1 and Grade 2 is the first and most crucial technical and economic decision engineers face. An inappropriate choice can either lead to wasteful performance or create safety risks.