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20 / 22 / 24SWG ASTM A269 TP321H Stainless Steel Welded Tube With Bright Annealed Surface
SSWBAT03
Material: 321,321H, 1.4541; 347/347H,1.4550,1.4961; 317,317L,1.4449,1.4438;
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20 / 22 / 24SWG ASTM A269 TP321H welding stainless steel , cold drawn welded tubes
Stainless steel seamless bright annealed tube's final surface is polished and bright annealed. And the polished grade is includes 180 # , 320 # , 400 # , 600 # , 800 # . According to standard very strictly , tubes which produced by us always have correct OD and WT tolerance. And they are very suitable for chromatography industry.
Where can be used ?
1 . General service industries ( petroleum , food , chemical , paper , fertilizer , fabric , aviation and nuclear
2 . Fluid , gas and oil transport
3 . Pressure and heat transmission
4 . Construction and ornament
5 . Boiler heat exchangers
6 . Decorative usage ( road lamp facilities , bridge handrail , expressway railing , bus stop , airport and gymnasium ) boiler , auto parts , medical equipment , building materials , food industry
Chemical Composition :
| Material | ASTM A269 Chemical Composition % Max | ||||||||||
| C | Mn | P | S | Si | Cr | Ni | Mo | N B | Nb | Ti | |
| TP304 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-11.0 | ^ | ^ | ^. | ^ |
| TP304L | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 8.0-12.0 | ^ | ^ | ^ | ^ |
| TP316 | 0.08 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 | ^ | ^ | ^ |
| TP316L | 0.035 D | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 10.0-15.0 | 2.00-3.00 | ^ | ^ | ^ |
| TP321 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-12.0 | ^ | ^ | ^ | 5C -0.70 |
| TP347 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | 9.0-12.0 | 10C -1.10 | ^ |
MTSCO has been dedicated to producing bright annealed tubes since 2014 , owning complete producing technology and abundant managing experience . And the raw material such as mother tube , round bar we use is from Chinese biggest and well-known steel mill : Walsin , Yongxing etc . Also we have advanced NDT equipments for the tests such as Eddy Current test , Ultrasonic test , Hydraulic test and so on . Welcome you contact us in free !
| Corrosion Test | If clients need will be conducted |
| Chemical Analysis | Will be tested as per required quality standards |
| Destructive / Mechanical Testing | Tensile / Hardness / Flattening |
| Eddy Current Testing | Using digital flaw-mark testing System to do test and mark in surface homogeneities |
| Hydrostatic Testing | 100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s . |
| Air Under Pressure Test | To check any evidence of air leakage |
| Visual Inspection | After passivation, every single length of tubes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections |
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