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ASTM A249 / ASME SA249 ERW Stainless Steel Heat Exchanger Welded Tube

 

Our 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 .
 
ASTM A249 Standard :

Size ODNominal WallOutside DiameterLengthWall
1/2" (12.7)0.065" (1.65)/0.049" (1.25)+/-0.005 (0.13)+1/8" (3.18) - 0+/-10.0%
3/4" (19.1)0.065" (1.65)/0.049" (1.25)+/-0.005 (0.13)+1/8" (3.18) - 0+/-10.0%
1" (25.4)0.065" (1.65)/0.049" (1.25)+/-0.005 (0.13)+1/8" (3.18) - 0+/-10.0%
1-1/2" (38.1)0.065" (1.65)/0.049" (1.25)+/-0.008" (0.20)+1/8" (3.18) - 0+/-10.0%
2" (50.8)0.065" (1.65)/0.049" (1.25)+/-0.008" (0.20)+1/8" (3.18) - 0+/-10.0%
2-1/2" (63.5)0.065" (1.65)+/-0.010" (0.25)+1/8" (3.18) - 0+/-10.0%
3" (76.2)0.065" (1.65)+/-0.010" (0.25)+1/8" (3.18) - 0+/-10.0%
4" (101.6)0.083" (2.11)+/-0.015" (0.38)+1/8" (3.18) - 0+/-10.0%
6" (152.4)0.083" (2.11)+/-0.030" (0.76)+1" (25.4) - 0+/-10.0%
6" (152.4)0.109" (2.77)+/-0.030" (0.76)+1" (25.4) - 0+/-10.0%
8" (203.2)0.109" (2.77)+0.061" (1.55)/-0.031" (0.79)+1" (25.4) - 0+/-10.0%

 

 

Application
a) For fluid & gas transport
b) Structure & machining etc
Advantages
a) Advanced technology of cold draw machine
b) Advanced annealing machine
c) Better mechanical property
d) More precise dimension
e) Perfect inspection method and inspection equipment etc
 

Material Grade :

 

American StandardTP304 , TP304L , TP310S , TP316 , TP316L , TP316Ti , TP321 , TP347 , 904L , S31803 Etc
European Standard1.4301 , 1.4306 , 1.4845 , 1.4401 , 1.4404 , 1.4571 , 1.4541 , 1.4550 , 1.4539 , 1.4462 Etc
German StandardX5CrNi18-10 , X2CrNi19-11 , X12CrNi25-21 , X5CrNi17-12-2 , X5CrNi17-12-3 , X2CrNiMo18-14-3 , X6CrNiTi18-10 , X6CrNiTb18-10 Etc

 

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