Heat Exchanger Tubes
SEJIN TUBE TECH has grown to be one of the leading manufacturer and supplier for the welded Stainless Tubes such as ASTM A249, ASME SA249, Stainless Steel Pipes, Heat Exchanger Tubes, Light Gauge Stainless Steel Pipes, Stainless Steel Sanitary Tubing and Stainless Steel Seamless Tube
Dimension
- Specification : KS D 3577, JIS G 3463, ASTM A 249
- Usage : Boiler parts, heat exchanger tubes used in chemical and petroleum industry.
(Unit : mm)
Tolerance
| Division ＼ Specification | KS D3577 (JIS G 3463) | ASTM A 249 | ||||
| Tolerance | Out Diameter |
D < 60 | ±0.25 | D < 25.4 | ±0.10 | |
| 60 ≤ D < 80 | ±0.30 | 25.4 ≤ D ≤ 38.1 | ±0.15 | |||
| 80 ≤ D < 100 | ±0.40 | 38.1 ＜ D < 50.8 | ±0.20 | |||
| 100 ≤ D < 120 | +0.40 -0.60 |
50.8 ≤ D < 63.5 63.5 ≤ D <76.2 |
±0.25 ±0.30 |
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| 120 ≤ D 160 | +0.40 -0.80 |
76.2 ≤ D ≤ 101.6 101.6 < D ≤ 190.5 |
±0.38 +0.38, -0.64 |
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| Wall Thickness |
D < 40 | t < 2 | +0.4 -0 |
All Sizes | ±10% or +18% -0 |
|
| t ≥ 2 | +20% -0 |
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| D ≥ 40 | All Thickness | +22% -0 |
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| Length | D ≤ 50 | L ≤ 7000 | +7.0 | D < 5.08 D ≥ 50.8 |
+3.17 -0 +4.76 -0 |
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| L > 7000 | +10.0 | |||||
| D > 50 | L ≤ 7000 | +10.0 | ||||
| L > 7000 | +13.0 | |||||
| Straightness | Shall be reasonably straight | Under 0.8 / 9.14 | ||||
| Inside Removing | No Removing | Inside Bead Removing | ||||
