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Products

Boiler and Heat Exchanger tubing

Stainless Steel Welded Tube for Boilers, Heat Exchanger and Condensers

Specification:according to ASTM A249，DIN 17457，EN 10217-7

Welding methods: T.I.G.

Execution: bright annealed and inner bead removed

Available steel grades:AISI 304/L, AISI316/L, EN 1.4301,EN 1.4306, EN 1.04401, EN 1.4404, etc.

Surface condition:tube surface will be free of scale by pickling or bright annealing

End finish: plain end, burr free, cap protection both ends

Length: tubes can be supplied in standard length of 6m, other lengths can be supplied on request

Application:tubes use as boiler, superheater, heat exchanger,condenser or hygeinic tubes

Outside Diameter Thickness(mm)
(Inch) mm 0,9 1,0 1,2 1,5 2,0 2,5 3,0 4,0
5/8 15,9

 

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 ● ●        
3/4 19,1

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 ● ● ● ●      
7/8 22,2 ● ● ● ● ●      
1 25,4 ● ● ● ● ●      
1 1/8 28,6 ● ● ● ● ● ●    
1 1/4 31,8 ● ● ● ● ● ● ●  
1 3/8 35,0 ● ● ● ● ● ● ●  
1 1/2 38,1 ● ● ● ● ● ● ●  
1 3/4 44,5 ● ● ● ● ● ● ●  
2 50,8 ● ● ● ● ● ● ●  
2 1/4 57,0 ● ● ● ● ● ● ●  
2 3/8 60,3 ● ● ● ● ● ● ●  
2 1/2 63,5 ● ● ● ● ● ● ●  
3 76,2 ● ● ● ● ● ● ●  
3 1/2 88,9   ● ● ● ● ● ●  
4 101,6     ● ● ● ● ●  
4 1/4 108,0       ● ● ● ● ●
4 1/2 114,3       ● ● ● ● ●
5 127,0         ● ● ● ●
6 152,4         ● ● ● ●

 

The tolerance of A249 for boiler, superheater, heat exchanger and condenser tubing

Outside Diameter Thickness Length
＜25.4mm ± 0.10mm ± 10% OD＜50.8mm +3mm/-0mm
≥25.4mm - 38.1mm ± 0.15mm ±10% or ±0.2mm
whichever is greater
≥38.1mm - 50.8mm ± 0.20mm
≥50.8mm -63.5mm ± 0.25mm
≥63.5mm - 76.2mm ± 0.30mm
≥76.2mm -101.6mm ± 0.38mm
≥101.6mm - 152.4mm (+0.38mm)
(-0.64mm)

 

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