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ASTM A269 TP321/321H Heat Exchanger U Bend Welded Tube
SSHEWT02
Material: 321,321H, 1.4541; 347/347H,1.4550,1.4961; 317,317L,1.4449,1.4438;
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ASTM A269 TP321 / 321H Stainless Steel Heat Exchanger U Bend Welded Tube For Boiler
MTSCO heat exchanger tube with pickling and annealing surface is very popular in boilers and heat exchangers industry , water heater industry , air-conditioning industry etc . This kind of seamless tubes are have a very important position in our all products .
| Process : |
| 1 . We use Cold Drawn techonology to produce U bend tube |
| 2 . U bend tubes produce will accordance to customer's drawings |
| 3 . To avoid oxidation , inert gas (Argon) is passed through tubes ID at the required flow rate |
| 4 . The radius is checked for its OD and wall thinning with the recommended specification |
| 5 . We'll choose three different position or as customer's require to make sure tubes quality . We'll do physical properties and micro-structure test |
| 6 . Visual inspection for waviness and cracks is done with Dye Penetrant Test |
| 7 . Each tube is then hydro tested at the recommended pressure to check for leakage |
Chemical Composition
| C(max) | Si(max) | P(max) | S(max) | Cr | Ni | Mo | Ti | |
| TP304/1.4301 | 0.080 | 1.00 | 0.045 | 0.030 | 18.0-20.0 | 8.0-10.5 | ||
| TP304L/1.4307 | 0.035 | 1.00 | 0.045 | 0.030 | 18.0-20.0 | 8.0-12.0 | ||
| TP304H/1.4948 | 0.04-0.10 | 1.00 | 0.045 | 0.030 | 18.0-20.0 | 8.0-12.0 | ||
| TP316/1.4401 | 0.080 | 1.00 | 0.045 | 0.030 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 | |
| TP316L/1.4404 | 0.035 | 1.00 | 0.045 | 0.030 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | |
| TP316Ti/1.4571 | 0.080 | 1.00 | 0.045 | 0.030 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 0.7>5x(C+N) |
| TP321/1.4541 | 0.080 | 1.00 | 0.045 | 0.030 | 17.0-19.0 | 9.0-12.0 | 0.7>5x(C+N) | |
| TP317L/1.4449 | 0.080 | 1.00 | 0.045 | 0.030 | 18.0-20.0 | 11.0-14.0 | 3.0-4.0 | |
| TP347H/1.4912 | 0.04-0.10 | 1.00 | 0.045 | 0.030 | 17.0-19.0 | 9.0-13.0 | ||
| TP309S/1.4833 | 0.080 | 1.00 | 0.045 | 0.030 | 22.0-24.0 | 12.0-15.0 | 0.75 | |
| TP310S/1.4845 | 0.080 | 1.00 | 0.045 | 0.030 | 24.0-26.0 | 19.0-22.0 | 0.75 |
Grade | TP 304 ; TP304H ; TP304L ; TP316 ; TP316L ; TP 321 ; TP321H ; TP317L ; TP310S ; TP347H |
Standard
| ASTM A213 , ASTM A 269 , ASTM A 270 , EN10216-5 ; ASTM B 622 ; ASTM B516 ; ASTM A789 , etc |
Size | OD : 25.4mm |
WT : 2.11 | |
Length : 12192mm | |
Advantage | Superior surface finish , better mechanical property ; more precise dimension ; perfect inspection method and inspection equipment |
Application | Boiler tube applies to petroleum , chemical industry , electric power , boiler , high temperature resistant , low temperature resistant , corrosion resistant . The size can be made according to the customers requirements . High pressure boiler pipe applies to container , petrochemical and so on . Note : Generally , high pressure boiler pipe’s working pressure above 9.88Mpa and working temperature between 450 to 650 . |
Package | Plywood case |
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