STRUCTURAL PIPE
STRUCTURAL STEEL PIPE
Outside Diameter：Φ21.3mm – 2000mm (1″ – 78″ )
Wall Thickness：1.0 – 50mm (SCH10 – SCH160)
Quality Standards：ASTM、EN、ISO、JIS、GB、AS/NZS
Length：3 – 18m (10″ – 60″)
Shapes：Round, Square, Rectangular, Custom Sections
description
Structural steel pipe is a hollow tubular section used in construction and engineering load applications. Manufactured by seamless or welded processes (ERW/SAW) with a high strength-to-light ratio and excellent torsional resistance. Due to its durability and design flexibility, it is widely used in building frames, bridges, industrial supports, and infrastructure. With proper corrosion protection, a service life of more than 30 years can be achieved.
Product Name: Structural Pipe, Hollow Structural Section (HSS), Construction Steel Tube
Specifications:
Outer Diameter: 21.3mm – 2000mm (Round)
Section Sizes：20×20mm – 500×500mm (Square/Rectangular)
Wall Thickness：1.0 – 50mm
Length：6m / 12m / 18m (Customizable)
Standard and Steel Grade:
ASTM A500: Gr.A, B, C, D (Cold-formed welded)
ASTM A53: Gr.A, B (ERW/seamless)
ASTM A1085: High-strength structural
EN 10219: S235JRH, S355J0H, S460NH
JIS G3466: STKR400, STK500
GB/T 6728: Q235B, Q355B
AS/NZS 1163: C250, C350, C450
Ends: Plain ends, Beveled ends, Threaded ends, Cap protected
Surface Treatment:
- Hot-Dip Galvanized (EN ISO 1461)
- Red/Oxide Primer Coating
- Pre-painted RAL colors
- Sandblasted (Sa 2.5)
Specification
STRUCTURAL STEEL PIPE Specification Range Reference Table
| Parameters | Typical range | Extreme range | Standard basis | Engineering constraints |
| Outside diameter | ⌀114.3mm~⌀508mm (4″~20″) | ⌀21.3mm~⌀1626mm (1/2″~64″) | ASTM A500, EN 10219 | >1200mm often requires SAW process; >18m length transport limited |
| Wall thickness | 4.78mm~12.7mm (SCH40-STD) | 1.65mm (SCH10)~25mm (XXS) | ASTM A53, GB/T 3094 | Thin wall (<3mm) limited to low-load applications; Thick wall requires specific welding procedures |
| Length | 12m (standard) | 5m (special) ~ 18m | Project Specs | >12m pipes require specialized handling/transport; Site splicing common for longer spans |
STRUCTURAL STEEL PIPE Standards and Applications Comparison Table
| Classification | Standard | Positioning | Applicability |
| General Structural | ASTM A500 | US standard for structural tubing | Primary standard for building frames, trusses, supports |
| Cold Formed SHS | EN 10219 | European cold-formed hollow sections | Widely used in architectural and structural applications across EU/UK |
| Hot Formed SHS | EN 10210 | European hot-finished hollow sections | Higher strength/stress applications, better weldability |
| Piling | ASTM A252, EN 10248 | Foundation piles & retaining walls | Driven piles, micropiles, soldier piles |
| Regional Standard | GB/T 3094, GB 50981 | China structural & seismic design | Mandatory for building structures in China, seismic zones |
| High Strength/Lines | API 5L, ASTM A106 | Line pipe used structurally | Offshore platforms, heavy industrial structures, pipe racks |
application
Urban landmark buildings: the core skeleton of super high-rise buildings, the dome grid of large stadiums, and the seismic steel structure residential frame.
Transportation network: arched main structure of sea-crossing bridge, pier columns of high-speed railway viaduct, subway tunnel support system, port crane track foundation piles.
Energy engineering: the main structure of wind power towers, boiler support frames for thermal power plants, and protective frames for transmission and transformation station equipment.
Industrial facilities: mine conveyor corridor supports, corrosion-resistant pipe galleries for chemical plants, load-bearing columns for assembly lines in automobile manufacturing plants.
People’s livelihood projects: the main rod of smart street lamps, the skeleton of modular bus shelters, the arc roof of agricultural greenhouses, and the flood control and drainage pipeline system.
advantages
Strong and reliable
Building skeleton-level load-bearing capacity, easily supporting super high-rise buildings and large venues
No deformation under extreme weather conditions (verified in projects in severe cold polar regions and high-temperature deserts)
Flexible and versatile
Provides a full range of round, square, and rectangular tubes, which can be freely combined into creative shapes such as arches and grids
Convenient on-site cutting and hole opening, perfectly suited to complex nodes
Durable
Galvanized pipes offer exceptional corrosion resistance, requiring no maintenance for 30 years in coastal facilities
Special coated pipes withstand acid fog corrosion in chemical plants
Energy-efficient
Hollow design reduces weight by 40% compared to solid steel columns, lowering foundation costs
Factory-prefabricated production reduces construction site duration by over 50%
Environmentally friendly
100% recyclable steel reduces mining pollution
Zero dust during construction protects urban air quality
Safety assurance
Flexible deformation absorbs energy during earthquakes, ensuring building stability
Fire-resistant coatings expand when exposed to fire, providing critical escape time
packing
STRUCTURAL PIPE needs to pay attention to anti-deformation and anti-corrosion protection during transportation. It is fixed with a special bracket to ensure the stability of the pipeline during transportation. The main modes of sea freight include container transportation (suitable for short-distance and small batches), bulk carrier transportation (economical but complex handling and handling), and dedicated pipeline carriers (safe and efficient but costly). Choose the right mode of transportation according to the actual needs to ensure that the quality of the pipeline is maximized. In terms of packaging, wooden boxes, iron frames or other special packaging materials can be used to ensure the safety of the pipeline during transportation and storage.
STRUCTURAL STEEL PIPE Specification Range Reference Table
| Parameters | Typical range | Extreme range | Standard basis | Engineering constraints |
| Outside diameter | ⌀114.3mm~⌀508mm (4″~20″) | ⌀21.3mm~⌀1626mm (1/2″~64″) | ASTM A500, EN 10219 | >1200mm often requires SAW process; >18m length transport limited |
| Wall thickness | 4.78mm~12.7mm (SCH40-STD) | 1.65mm (SCH10)~25mm (XXS) | ASTM A53, GB/T 3094 | Thin wall (<3mm) limited to low-load applications; Thick wall requires specific welding procedures |
| Length | 12m (standard) | 5m (special) ~ 18m | Project Specs | >12m pipes require specialized handling/transport; Site splicing common for longer spans |
STRUCTURAL STEEL PIPE Standards and Applications Comparison Table
| Classification | Standard | Positioning | Applicability |
| General Structural | ASTM A500 | US standard for structural tubing | Primary standard for building frames, trusses, supports |
| Cold Formed SHS | EN 10219 | European cold-formed hollow sections | Widely used in architectural and structural applications across EU/UK |
| Hot Formed SHS | EN 10210 | European hot-finished hollow sections | Higher strength/stress applications, better weldability |
| Piling | ASTM A252, EN 10248 | Foundation piles & retaining walls | Driven piles, micropiles, soldier piles |
| Regional Standard | GB/T 3094, GB 50981 | China structural & seismic design | Mandatory for building structures in China, seismic zones |
| High Strength/Lines | API 5L, ASTM A106 | Line pipe used structurally | Offshore platforms, heavy industrial structures, pipe racks |
Urban landmark buildings: the core skeleton of super high-rise buildings, the dome grid of large stadiums, and the seismic steel structure residential frame.
Transportation network: arched main structure of sea-crossing bridge, pier columns of high-speed railway viaduct, subway tunnel support system, port crane track foundation piles.
Energy engineering: the main structure of wind power towers, boiler support frames for thermal power plants, and protective frames for transmission and transformation station equipment.
Industrial facilities: mine conveyor corridor supports, corrosion-resistant pipe galleries for chemical plants, load-bearing columns for assembly lines in automobile manufacturing plants.
People’s livelihood projects: the main rod of smart street lamps, the skeleton of modular bus shelters, the arc roof of agricultural greenhouses, and the flood control and drainage pipeline system.
Strong and reliable
Building skeleton-level load-bearing capacity, easily supporting super high-rise buildings and large venues
No deformation under extreme weather conditions (verified in projects in severe cold polar regions and high-temperature deserts)
Flexible and versatile
Provides a full range of round, square, and rectangular tubes, which can be freely combined into creative shapes such as arches and grids
Convenient on-site cutting and hole opening, perfectly suited to complex nodes
Durable
Galvanized pipes offer exceptional corrosion resistance, requiring no maintenance for 30 years in coastal facilities
Special coated pipes withstand acid fog corrosion in chemical plants
Energy-efficient
Hollow design reduces weight by 40% compared to solid steel columns, lowering foundation costs
Factory-prefabricated production reduces construction site duration by over 50%
Environmentally friendly
100% recyclable steel reduces mining pollution
Zero dust during construction protects urban air quality
Safety assurance
Flexible deformation absorbs energy during earthquakes, ensuring building stability
Fire-resistant coatings expand when exposed to fire, providing critical escape time
STRUCTURAL PIPE needs to pay attention to anti-deformation and anti-corrosion protection during transportation. It is fixed with a special bracket to ensure the stability of the pipeline during transportation. The main modes of sea freight include container transportation (suitable for short-distance and small batches), bulk carrier transportation (economical but complex handling and handling), and dedicated pipeline carriers (safe and efficient but costly). Choose the right mode of transportation according to the actual needs to ensure that the quality of the pipeline is maximized. In terms of packaging, wooden boxes, iron frames or other special packaging materials can be used to ensure the safety of the pipeline during transportation and storage.
