ASTM A500 is a standard specification for cold-formed welded and seamless carbon steel structural tubing in square, and rectangular shapes. This specification covers various grades of carbon steel tubing for structural applications, including square and rectangular shapes.
| Product | Square and Rectangular Steel Pipe |
| Material | Carbon Steel |
| Grade | Q195 = A53 Grade A Q235 = A500 Grade A Q355 = A500 Grade B Grade C |
| Standard | GB/T 6728
ASTM A53, A500, A36 |
| Surface | Bare/Natural Black
Painted Oiled with or without wrapped |
| Ends | Plain ends |
| Specification | OD: 20*20-500*500mm ; 20*40-300*500mm
Thickness: 1.0-30.0mm Length: 2-12m |
| ASTM A500 Chemical Composition | |||||
| Steel grade | C (max.)% | Mn (max.)% | P (max.)% | S (max.)% | Copper (min.)% |
| Grade A | 0.3 | 1.4 | 0.045 | 0.045 | 0.18 |
| Grade B | 0.3 | 1.4 | 0.045 | 0.045 | 0.18 |
| Grade C | 0.27 | 1.4 | 0.045 | 0.045 | 0.18 |
| For each reduction of 0.01 percentage point below the specified maximum for carbon, an increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50 % by heat analysis and 1.60 % by product analysis. | |||||
| Shaped Structural Tubing Mechanical Properties | |||||
| Steel grade | Yield strength min. MPa |
Tensile strength min. MPa |
Elongation min. % |
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| Grade A | 270 | 310 | 25 wall thicknesses (T) equal to or greater than 3.05mm |
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| Grade B | 315 | 400 | 23 wall thicknesses (T) equal to or greater than 4.57mm |
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| Grade C | 345 | 425 | 21 wall thicknesses (T) equal to or greater than 3.05mm |
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Strict Quality Control:
1) During and after production, 4 QC staffs with more than 5 years experience inspect products in random.
2) National accredited laboratory with CNAS certificates
3) Acceptable inspection from third party appointed/paid by buyer, such as SGS, BV.
4) Approved by Malaysia, Indonesia, Singapore, Philippines, Australia, Peru and UK. We own UL /FM, ISO9001/18001, FPC certificates
