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Ho Chi Minh City, Vietnam
Structural steel · Pipe
Steel pipe – seamless and welded, for structures and piping
Steel pipe carries fluids in process plants, forms piles and columns, and makes handrails, trusses and supports. World Steel sources seamless and welded pipe to American, European, Japanese, Chinese and Australian standards – for pipe spools, structures and site works.
- Seamless · ERW · SAW
- Manufacturing routes by size and service
- NPS · schedule
- Pipe sizing ASME B36.10 / B36.19
- CS · LTCS · SS
- Materials carbon, low-temp, stainless
- 3.1
- Mill certificates EN 10204, heat-traceable
Pipe or structural tube?
Pipe is made to carry pressure: it is sized by nominal pipe size and wall schedule, tested for pressure and certified for its service temperature. Structural tube is sized by outside diameter and wall and specified by yield strength. Both appear in steel structures – pipe in piles, columns and handrails, structural CHS in trusses and frames – but they are bought to different standards.
Seamless pipe is pierced and rolled from solid billet – the choice for high pressure and temperature. Welded pipe (ERW or submerged-arc welded) is formed from strip or plate – economical and available in large diameters.
Fabricated with the steel
Pipe spools, piles and pipe structures
World Steel fabricates pipe into pressure spools, pipe racks and supports, piles and structural members in the same shop as the steel structure. See pressure piping fabrication, pipe racks and structural hollow sections.
By standard
Common pipe standards and grades
Typical grades – the piping class or the structural design decides.
| Standard | Grades | Use |
|---|---|---|
| ASTM A53 | Gr B (240 MPa), Type E / S | General pipe – utilities, structures, handrails |
| ASTM A106 | Gr B / C | Seamless pipe for high-temperature service |
| API 5L / ISO 3183 | Gr B · X42 · X52 · X65 | Line pipe; also piles and heavy structures |
| ASTM A333 · A312 | Gr 6 · TP304/316L | Low-temperature carbon steel; stainless pipe |
| ASTM A252 | Gr 2 · Gr 3 | Welded and seamless pipe piles |
| EN 10216-2 · EN 10217-2 | P235GH · P265GH | Seamless / welded pressure pipe |
| EN 10255 · EN 10219 | S195T · S355J2H | Threadable pipe; structural CHS |
| JIS G3452 · G3454 · G3459 | SGP · STPG370/410 · SUS-TP | Ordinary piping; pressure service; stainless |
| GB/T 3091 · GB/T 8163 | Q235 · Q355 / 20 · Q355 | Welded low-pressure pipe; seamless pipe for fluids |
| AS/NZS 1163 · AS 1074 | C350L0 CHS · ordinary service | Structural CHS; steel tubes and fittings |
FAQ
常见问题
What is the difference between A53 and A106 pipe?
A53 is a general pipe in welded or seamless form; A106 is seamless pipe for high-temperature service. Many mills certify pipe to both.
What does schedule mean?
The wall-thickness series of a pipe size (for example Sch 40, Sch 80) under ASME B36.10 for carbon steel and B36.19 for stainless steel.
Can pipe be used as a structural member?
Yes, when the design uses the pipe grade's properties – common for piles, columns and handrails. For main structural members, structural CHS grades are usually specified.
Send us your pipe list
Sizes, schedules, grades and quantities – supplied or fabricated into spools and structures.