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Structural Steel Pipe

Explore our range of high-quality Structural Steel Pipes, designed for industrial, construction, and infrastructure projects.

Our Structural Steel Pipe products are manufactured according to international standards, with various materials, shapes, and welding options to meet diverse project requirements.

Standard & Material

Our carbon steel pipes are mainly classified into ASTM steel pipes and GB standard steel pipes according to standards:

Category Standard Material Grade Common Name Size Range (OD / WT / Length)
ASTM ASTM A572 Gr.42 / Gr.50 / Gr.55 ASTM A572 steel pipes OD: 21.3–610mm · WT: 2–40mm · Length: 6–12m
ASTM A500 Gr.B / Gr.C / Gr.D ASTM A500 steel pipes OD: 21.3–508mm · WT: 1.8–20mm · Length: 6–12m
ASTM A709 Gr.36 / Gr.50 / Gr.50W ASTM A709 steel pipes OD: 60–800mm · WT: 6–50mm · Length: 6–12m
ASTM A252 Gr.1 / Gr.2 / Gr.3 ASTM A252 steel pipes OD: 219–1420mm · WT: 6–60mm · Length: 6–18m
GB GB/T 8162 / GB/T 8163 Q235B Q235B steel pipes OD: 21.3–630mm · WT: 2–30mm · Length: 6–12m
GB/T 8162 / GB/T 8163 Q355B Q355B steel pipes OD: 21.3–720mm · WT: 3–40mm · Length: 6–12m

We offer a full range of steel products, from pipes to plates, coils to profiles, to meet the needs of your diverse projects.

Chemical Composition

Category Standard C (%) Mn (%) P (%) S (%)
ASTM    ASTM A572 0.18–0.23 ≤1.35 ≤0.035 ≤0.035
ASTM A500 ≤0.26 ≤1.60 ≤0.035 ≤0.035
ASTM A709 ≤0.23 ≤1.35 ≤0.035 ≤0.035
ASTM A252 ≤0.25 ≤1.20 ≤0.035 ≤0.035
GB  GB/T 8162 / GB/T 8163 Q235B ≤0.20 0.50–1.20 ≤0.045 ≤0.045
GB/T 8162 / GB/T 8163 Q355B ≤0.20 1.0–1.6 ≤0.045 ≤0.045

Mechanical Properties

Category Standard Yield Strength (MPa) Tensile Strength (MPa) Elongation (%)
ASTM ASTM A572 290 400–550 20
ASTM A500 250 340–430 23
ASTM A709 345 450–620 18
ASTM A252 295 410–550 20
GB GB/T 8162 / GB/T 8163 Q235B 235 375–500 26
GB/T 8162 / GB/T 8163 Q355B 355 470–630 20

Shape

Shape Type Description Typical Use
Round Pipe Most common tubular shape Water, gas, structural columns, oil & gas pipelines
HSS Tube Customized industrial and architectural projects Specialized industrial and architectural applications
RHS Tube Rectangular Hollow Section with precise dimensions Structural frameworks, construction, bridges, and general fabrication

Round Tube

HSS Tube

RHS Tube

Welding Type

Welding Type Description Typical Use
Seamless Steel Pipes Made without welding, offering uniform strength High-pressure pipelines, critical industrial applications
ERW (Electric Resistance Welded) Steel Pipe High-frequency welded longitudinally Medium-pressure water, gas, and oil pipelines
LSAW (Longitudinal Submerged Arc Welded) Steel Pipe High-quality longitudinal weld for large diameter pipes Oil, gas transmission, and structural pipelines
SSAW / HSAW (Spiral Welded Pipes) Steel Pipe Spiral welded for large diameters and long lengths Water transmission, structural engineering
seamless and weled pipe - ROYAL GROUP

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Surface Finish

Black Painting: Black painting is a thin layer of paint over the surface of the steel, which is applied to prevent rusting.

FBE: Epoxy layer for anti-corrosion, is good for underground or underwater pipelines.

3PE: 3PE coating can provide excellent effect on anti-corrosion, used in the underground pipeline.

3PP: Three layer polypropylene coating for high temperature and long time stability.

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Our Ordinary Steel Pipe

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Application

Oil and gas pipelines: Require high strength and corrosion resistance to transport oil and natural gas.

Water and sewage transport: Water supply, waste water and sewage need corrosion- and leak-proof pipes.

Industrial fluid transportation: Convey industrial fluids in chemical, pharmaceutical, and processing facilities, need pressure- and corrosion-resistant piping.

Construction and Infrastructure Steel: Support Columns, Beams and Frames – Our products are used as building and infrastructure steel in support columns, beams, and frames.

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Oil and gas pipelines

Water and sewage transport

Industrial fluid transportation

Construction and Infrastructure Steel

We offer a full range of  steel products, from pipes to plates, coils to profiles, to meet the needs of your diverse projects.

Advantages of Our Ordinary Carbon Steel Pipes

  • Manufactured to international standards (ASTM, GB): All pipes are produced following globally recognized standards to ensure consistent quality and compatibility with international projects.

  • High-quality raw materials and advanced production processes: Made from premium carbon steel or alloy steel, using hot-rolled, cold-rolled, and seamless/welded manufacturing methods for strength, durability, and uniform performance.

  • Multiple shapes and welding options for flexibility: Available as round, square, rectangular, and HSS tubes; welding types include ERW, SAW, and seamless options to meet diverse engineering needs.

  • Corrosion protection available via painting, galvanizing, or coating: Surface treatments include black painting, hot-dip galvanizing, FBE, 3PE, and 3PP to extend pipe lifespan in industrial, water, and oil & gas applications.

  • Global shipping and customized lengths available: Pipes can be cut to specific lengths, packaged for safe long-distance transport, and shipped worldwide to meet project requirements.

ROYAL GROUP

Address

Kangsheng development industry zone,
Wuqing district, Tianjin city, China.

Hours

Monday-Sunday: 24-hour Service