ASTM A249 304 304L 316L Welded Stainless Steel Heat Exchanger Tube
Quick Detail:
Size Random: 6mm to 219mm
Thickness Random: 0.5mm to 8.0 mm
Thicnness Tolerance: +/- 002mm
Length Random: 1000mm, 2000mm, 6000mm or as required
Surface Finish: 2B Finish, BA Finish, No.1 Finish etc.
Tube Standard: ASTM A249
304 Nickel Content: Above 8%
316L Nickel Content: Above 10%
321 Nickel Content: Above 9%
Specifications
Grade | 200Series And 300 Series |
Thickness | 0.5mm-8mm or according to customer's required |
Length | Nomal is 6/5.8m,or according to customer's demand |
Size | Insider Diamter: Mini 3.2mm |
Surface | No. 1 | 2B | BA | Bright | Mirror | HL etc. |
Packing | Every tube is sleeved in plastic bag individually,and then several tube are packed by weaving bag,which is seaworthy.Or 50kg/bundle,500kg/bundle.We can pack as clients' requirement. |
Thickness tolerance | ±0.02mm |
Test | Squash test,extended test,water pressure test,heat treatment,NDT |
Technique | Welded |
Certification | ISO,SGS,CQC,etc. |
Sample | Available |
Surface Finish
Steel is first rolled to the wanted size and thickness and then annealed to change the properties of the final material. Any oxidation that forms on the surface is removed by pickling, and a passivisaion layer is created on the surface. A final finish can then be applied to achieve the desired aesthetic.
The surface of our round welded stainless steel heat exchanger tube includes:
mirror polishing/stain/customized
Surface Finish | Definition | Application |
2B | Those finished, after cold rolling, by heat treatment, pickling or other equivalent treatment and lastly by cold rolling to given appropriate luster. | Medical equipment, Food industry, Construction material, Kitchen utensils. |
BA | Those processed with bright heat treatment after cold rolling. | Kitchen utensils, Electric equipment, Building construction. |
NO.3 | Those finished by polishing with No.100 to No.120 abrasives specified in JIS R6001. | Kitchen utensils, Building construction. |
NO.4 | Those finished by polishing with No.150 to No.180 abrasives specified in JIS R6001. | Kitchen utensils, Building construction, Medical equipment. |
HL | Those finished polishing so as to give continuous polishing streaks by using abrasive of suitable grain size. | Building Construction. |
NO.1 | The surface finished by heat treatment and pickling or processes corresponding there to after hot rolling. | Chemical tank, pipe. |
Applications:
We,this type seamless and welded food steel tube be widely used in kinds of industries:
- Petrochemical industry,Electricity,
- Nuclear energy,
- Chemical fertilizer,Boiler,Light textile,
- Spinning and weaving industry,
- Power industry,
- Pharmacy and biology etc.
Our advantage
- 100% Tube Hydro-static Test or Nondestructive Electric Test
- 100% Eddy Current Test
- 100% Ultrasonic Detector Test if customer requested
- Tensile and Hardness Test for each Heat No.’s material
- 100% Annealing&Solution and Pickling
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