ASTM A53/A53M Type E/F
Welded carbon steel pipe
Steel Grades: Type E(ERW) Gr.A, Gr.B; Type F(炉焊) Gr.A, Gr.B
Commonly used in building and municipal water supply and drainage pipelines, gas pipelines, low-pressure steam and air pipelines, fire protection pipelines, as well as structural pipes such as supports and railings; Grade B has slightly higher strength and wider applications. With its excellent forming and connection properties, and support for threaded, flanged, or welded assemblies, welded steel pipes are suitable for medium to low pressure fluid transportation and lightweight structural appli
ASTM A135/A135M
Resistance welded steel pipe
Steel Grades: Gr.A, Gr.B
Commonly used in fire sprinkler and water supply and drainage pipelines, compressed air and low-pressure fluid transportation pipelines, as well as structural supports, railings and cable protection sleeves, etc.; Grade B has slightly higher strength. With the good dimensional consistency and economy of resistance welded pipes, and supporting threaded, grooved or welded connections, they are suitable for fluid transportation and general structural pipe applications with low pressure, bulk supply
ASTM A500/A500M
Cold-formed welded structural pipe
Steel Grades: Gr.A, Gr.B, Gr.C, Gr.D (圆形/方形/矩形)
Widely used in load-bearing and supporting components such as columns and trusses in building steel structures, curtain walls and window frames, bridge railings, equipment supports, and billboard frames; square and rectangular tubes are especially common. With their excellent compressive and torsional resistance, regular shape, and high strength, hollow cross-sections are both aesthetically pleasing and efficient, making them suitable for exposed steel structures, lightweight frames, and various
ASTM A501/A501M
Thermoformed welded structural pipe
Steel Grades: Gr.A, Gr.B
Hollow structures commonly used in heavy steel structures such as columns and main beams, bridge components, large equipment supports and platforms, and offshore platforms, are designed to withstand significant loads. Larger sizes and thicker-walled tubes are particularly suitable. Thanks to the uniform properties and good weldability resulting from thermoforming, they can meet high load-bearing and safety requirements, making them suitable for load-bearing structures primarily composed of hollo
ASTM A252
Welded and seamless steel pipe piles
Steel Grades: Gr.1, Gr.2, Gr.3
Widely used in deep foundation engineering such as bridge and building pile foundations, wharf and trestle pile foundations, foundation pit support, and offshore platform piles, steel pipe piles can be used as end-bearing piles or friction piles, and are often filled with concrete to form composite piles. With their excellent bearing capacity, bending resistance, and ease of driving and extending, steel pipe piles are suitable for foundation engineering with large loads, complex geology, or cons
EN 10217-1
Pressure welded steel pipe - non-alloy steel
Steel Grades: P195TR1, P195TR2, P235TR1, P235TR2, P265TR1, P265TR2
Commonly used in water supply and drainage pipelines, compressed air pipelines, general industrial piping, and fire protection pipelines in normal temperature and pressure applications; TR2, due to additional testing, is suitable for applications with higher requirements. Grades are classified by strength, allowing selection based on pressure and medium. With the good economy and forming and connection properties of welded steel pipes, they are suitable for general pressure piping projects where
EN 10219-1/2
Cold-formed welded structural steel pipe
Steel Grades: S235JR, S235J0, S235J2, S275JR, S275J0, S275J2, S355JR, S355J0, S355J2, S355K2, S420MH, S460MH
Widely used in load-bearing and supporting components such as steel structure columns and trusses, curtain walls and ceiling joists, bridge railings, equipment supports, and exhibition structures; square and rectangular tubes are particularly common. Grades are classified according to strength and impact toughness, and can be selected based on stress and temperature. With its excellent compressive and torsional resistance and regular shape, it is suitable for exposed steel structures, lightweigh
JIS G3452
Carbon steel pipes for piping
Steel Grades: SGP
Widely used in building and municipal water supply and drainage pipelines, gas pipelines, fire protection pipelines, cable protection conduits, and general indoor and outdoor piping, SGP pipes can be connected by threads or flanges, and galvanized pipes are more corrosion resistant. With its excellent economy, ease of processing and connection, SGP pipes are suitable for general fluid transportation and piping projects with low pressure, various diameters, and a focus on cost and construction ef
JIS G3444
Carbon steel pipes for general structures
Steel Grades: STK290, STK400, STK490, STK500, STK540
Widely used in load-bearing and supporting components such as building and civil structures, bridge railings, machinery and equipment frames, supports and scaffolding, STK400 is the most common, while high-strength grades are used for larger loads. With its excellent compressive and torsional resistance due to its circular hollow cross-section and ease of connection, it is suitable for scaffolding, railings, space frames, and various light to medium-sized structures and temporary projects primar
JIS G3466
Angle steel pipes for general structures
Steel Grades: STKR400, STKR490, STKR500, STKR540
Widely used in load-bearing and supporting components such as steel structure columns and frames, curtain walls and window frames, billboards and signage frames, equipment supports and railings. With its regular square and rectangular hollow cross-section, easy splicing and installation, and excellent compressive and torsional resistance, it is both aesthetically pleasing and efficient, making it suitable for exposed steel structures, lightweight frames, and various building and structural proje
