Stainless Steel Tubing A269 Welded & Seamless

DONGSHANG stainless produces welded and seamless stainless steel tubing as ASTM A269 specification, in 304/340L, 316/316L, 321 and duplex steels grades, outside diameter range from 1/8″ to 24” with various wall thickness, tubes include rpund tube, square tube, rectangular tube, U type tubes and coil tubes, finishing as annealing pickling, bright annealing and polishing.

304/304L stainless steel tubing

Grade C Mn P S Si Ni Cr
TP304 0.08 2.00 0.045 0.030 1.0 8-11 18-20
TP304L 0.035 2.00 0.045 0.030 1.0 8-13 18-20

316/316L stainless steel tubing

Grade C Mn P S Si Ni Cr Mo
316 0.08 2.00 0.045 0.030 1.0 11-14 16-18 2-3
316L 0.035 2.00 0.045 0.030 1.0 10-14 16-18 2-3

stainless steel coiled tubing

stainless steel coli tubing used for bear, food, beverage processing or cooling and heater system, annealing pickling or bright annealing finishing.

  • Outside diameter: 3 mm – 25.4 mm
  • Wall thickness: 0.3 mm – 2 mm
  • Length: max 1000 meters

stainless steel U bending tubing

stainless steel U bending tube used for heat exchanger, boiler and condenser, beside A269 specification, and A213, A249, A688 specification.

  • Outside diameter: 12.7 mm – 38.1
  • Wall thickness: 0.5 mm – 3 mm
  • Straight length: 30000 mm
  • Leg length: max 12000 mm
  • Radius: max 1500 mm
  • A269 304 stainless steel tubing
  • 316L stainless steel tubing
  • welded stainless steel coil tube
  • welded seamless stainless steel U bending tube

Permissible Variations in Dimensions of ASTM A269 stainless steel tubing

OD Wall L
<38.1mm ±0.13mm OD<12.7mm ±15% OD≥12.7mm ±10% OD<38.1mm +3.20mm -0mm OD≥38.1mm +4.80 -0mm
≥38.1mm~88.9mm ±0.25mm
≥88.9mm~139.7mm ±0.38mm
≥139.7mm~203.7mm ±0.76mm
≥203.7mm~304.8mm ±1.01mm
≥304.8mm~355.6mm ±1.26mm

Testing and inspection