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Astm A249 tube tp316 304 stainless steel welded round tube/pipe
Our heat exchanger tube in stainless steels are suitable for all types of heat exchangers for conveying all types of gases and liquid with extreme low and high temperature requirements, such as sea water coolers, condensers, evaporators, heaters and reheaters.
They are used for heating, re-heating or cooling of gases, air or fluids in an extensive range of industries like chemical processing, aerospace and nuclear power generation, hydro carbon processing and oil refining.
Our heat exchanger tubes are appreciated for the feature such as dimensional accuracy, corrosion resistance, easy installation and smooth finishing.
| A789 / A789M Permissible Variations in Dimensions | ||||||||
| Group | Size, Outside Diameter, in. [mm] | Permissible Variations in Outside Diameter, in. [mm] | Average Wall Permissible Variations in Wall Thickness, % | Minimum Wall Permissible Variations in Wall Thickness, % | Permissible Variations in Cut Length,in. [mm] | Thin Walled Tubes | ||
| Over | Under | Over | Under | |||||
| 1 | up to 1/2 [12.7], excl | ± 0.005 [0.13] | ± 15 | 30 | 0 | 1/8 [3] | 0 | ... |
| 2 | 1/2 to 1 1/2 [12.7 to 38.1], excl | ± 0.005 [0.13] | ± 10 | 20 | 0 | 1/8 [3] | 0 | less than 0.065 in. [1.6 mm] specified |
| 3 | 1 1/2 to 3 1/2 [38.1 to 88.9], excl | ± 0.010 [0.25] | ± 10 | 20 | 0 | 3/16 [5] | 0 | less than 0.095 in. [2.4 mm] specified |
| 4 | 3 1/2 to 5 1/2 [88.9 to 139.7], excl | ± 0.015 [0.38] | ± 10 | 20 | 0 | 3/16 [5] | 0 | less than 0.150 in. [3.8 mm] specified |
| 5 | 5 1/2 to 8 [139.7 to 203.2], incl | ± 0.030 [0.76] | ± 10 | 20 | 0 | 3/16 [5] | 0 | less than 0.150 in. [3.8 mm] specified |
| HG 20537.2 | ASTM A249 (A1016) | GB / T 24593 | ||||||
| Outside Diameter (mm) | Ⅰ | Ⅱ | < 25.4 | ± 0.10 | ≤ 25 | ± 0.10 | ||
| <25 | ± 0.10 | >10~30 | ± 0.20 | ≥25.4~<38.1 | ± 0.15 | >25~40 | ± 0.15 | |
| ≥25~38 | ± 0.15 | >30~50 | ± 0.30 | ≥38.1~<50.8 | ± 0.20 | >40~50 | ± 0.20 | |
| >35~51 | ± 0.20 | >50 | ± 0.8% | ≥50.8~<63.5 | ± 0.25 | >50~65 | ± 0.25 | |
| >51~63 | ± 0.25 | >63.5~<76.2 | ± 0.31 | >65~75 | ± 0.30 | |||
| >63~76 | ± 0.30 | >75~100 | ± 0.38 | |||||
| Thickness (mm) | ± 10%S | ± 10%S | ± 10%S | |||||
| Length (mm) | +5 -0 | D<50.8 | +3 -0 | +5 -0 | ||||
| D ≥ 50.8 | +5 -0 | |||||||
| Stainless Steel Mechanical Properties | ||||||||
| Grade | Tensile Strength | Yide Strength | Elogation | Hardness | Soluction Annealing | |||
| kgf/mm²(N/mm²) | kgf/mm²(N/mm²) | % | HRB(HV) | ℃ | ||||
| ASTM | TP 304 | ≥53 (515) | ≥21 (205) | ≥35 | ≤90 (200) | 1040℃-1150℃ Water Quenching | ||
| TP 304L | ≥50 (485) | ≥17 (170) | ||||||
| TP 316 | ≥53 (515) | ≥21 (205) | ||||||
| TP 316l | ≥50 (485) | ≥17 (170) | ||||||
| JIS | SUS 304 | ≥53 (520) | ≥21 (205) | 1010℃-1150℃ Water Quenching | ||||
| SUS 304L | ≥49 (480) | ≥18 (175) | ||||||
| SUS 316 | ≥53 (520) | ≥21 (205) | ||||||
| SUS 316L | ≥49 (480) | ≥18 (175) | ||||||
| GB | 06Cr19Ni10 | ≥53 (520) | ≥21 (205) | 1010℃-1150℃ Water Quenching | ||||
| 022Cr19Ni10 | ≥49 (480) | ≥18 (180) | ||||||
| 06Cr17Ni12Mo2 | ≥53 (520) | ≥21 (205) | ||||||
| 022Cr17Ni12Mo2 | ≥49 (480) | ≥18 (180) | ||||||
| EN | 1.4301 | (500-700) | ≥20 (195) | ≥40 | 1000℃-1100℃ Water Quenching | |||
| 1.4307 | (470-670) | ≥18 (180) | ||||||
| 1.4401 | (510-710) | ≥21 (205) | 1020℃-1120℃ Water Quenching | |||||
| 1.4404 | (490-690) | ≥19 (195) | ||||||
