ASTM A249 Welded Stainless Steel Tubing

We are a manufacturer & supplier in ASTM A249 welded stainless steel tubing many years, 304/304L, 316/316L stainless steel grade conforming to ASTM A249 specification, mainly applied for heat exchanger, boiler, condenser, super heater.

A249 stainless steel welded tube is made from strip & coil, auto welding by TIG method to protect tube surface, cold drawn process should be carried out after welding, and welding bead removed, annealing pickling or bright annealing finishing can be offered.

ASTM A249 Welded Stainless Steel Tubing tolerance

OD WTH L
<25.40mm ±0.10mm ±10.00% OD<50.8mm +3.0mm -0mm OD≥50.8mm +5.0 -0mm
≥25.4mm~38.1mm ±0.15mm
≥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~190.5mm +0.38mm -0.64mm
≥190.5mm~228.6mm +0.38mm -1.14mm
astm a249 304-304l welded stainless steel tubeastm a249 welded stainless steel tubing
ASTM A249 Welded Stainless Steel Tubing finished in annealing solution, uniform grain structure and maximum corrosion resistance, if used for stainless steel heat exchanger tube, tubes shall be suitable for expanding in to fixed tube plates, both ends should be plain square cut, and smooth ends, different tube forms for specific application, like stainless stainless steel U bending tube for heat exchanger and stainless steel coiled tube, size range as following, A269 specification and A270 specification following too.

O.D. MM WALL THICKNESS MM LENGTHS Grades Type SPECIFICATIONS
1/2” 12.70 0.065” 1.65 10′ – 20′ 304/304L Welded A249 / A269 / A270
3/4” 19.05 0.065” 1.65 10′ – 20′ 304/304L Welded A249 / A269 / A270
1” 25.4 0.049” 1.24 10′ – 20′ 304/304L Welded A249 / A269 / A270
1” 25.4 0.065” 1.65 10′ – 20′ 304/304L Welded A249 / A269 / A270
11/2” 38.10 0.049” 1.24 10′ – 20′ 304/304L Welded A249 / A269 / A270
11/2” 38.10 0.065” 1.65 10′ – 20′ 304/304L Welded A249 / A269 / A270
2” 50.80 0.049” 1.24 10′ – 20′ 304/304L Welded A249 / A269 / A270
2” 50.80 0.065” 1.65 10′ – 20′ 304/304L Welded A249 / A269 / A270
21/2” 63.50 0.065” 1.65 10′ – 20′ 304/304L Welded A249 / A269 / A270
3” 76.20 0.065” 1.65 10′ – 20′ 304/304L Welded A249 / A269 / A270
4” 101.60 0.065” 1.65 10′ – 20′ 304/304L Welded A249 / A269 / A270
4” 101.60 0.083” 2.11 10′ – 20′ 304/304L Welded A249 / A269 / A270
6” 152.40 0.083” 2.11 10′ – 20′ 304/304L Welded A249 / A269 / A270
6” 152.40 0.109” 2.77 10′ – 20′ 304/304L Welded A249 / A269 / A270
8” 203.20 0.109” 2.77 10′ – 20′ 304/304L Welded A249 / A269 / A270
10” 254.00 0.134” 3.40 10′ – 20′ 304/304L Welded A249 / A269 / A270
12” 304.80 0.134” 3.40 10′ – 20′ 304/304L Welded A249 / A269 / A270
14” 355.60 0.134” 3.40 10′ – 20′ 304/304L Welded A249 / A269 / A270

Destructive and Non destructive test

Destructive test

stainless steel welded tube testing

air underwater test

air underwater test A249 welded tubing

Eddy current test

A249 stainless steel tube eddy current test