ASTM A213 (ASME SA213): Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
ASTM A789 (ASME SA789): Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service
ASTM A268(ASME SA268): Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
The specifications of JIS G3463, EN 10216-5 are available.
Inspection And Test
Raw Material Inspection:
1. Check the material supplier's mill test certificates
2. Check the material's quantity, size, surface condition
3. Conduct chemical analysis and mechanical property test
![Stainless Seamless Steel Pipe ASME/ASTM SA312 304 316L SA789 /SA790 Uns S31803 S32750](//image.made-in-china.com/226f3j00oESTVmrBZWRA/Stainless-Seamless-Steel-Pipe-ASME-ASTM-SA312-304-316L-SA789-SA790-Uns-S31803-S32750.webp)
Process Inspection:
1. Inspect single work-piece's dimension, levelness, bend
degree, hole size, hole location, etc.
2. Inspect the work-piece's welding result
![Stainless Seamless Steel Pipe ASME/ASTM SA312 304 316L SA789 /SA790 Uns S31803 S32750](//image.made-in-china.com/226f3j00eQZaVErSaWRm/Stainless-Seamless-Steel-Pipe-ASME-ASTM-SA312-304-316L-SA789-SA790-Uns-S31803-S32750.webp)
Cleaning Result Inspection:
After the work piece pass the process inspection, then go to cleaning to wipe out its oil&grease, dust, and other contaminants. Inspection method:
1. Visual inspection
2. Wipe test
3. Black light test
4. Mirror test (if need)
![Stainless Seamless Steel Pipe ASME/ASTM SA312 304 316L SA789 /SA790 Uns S31803 S32750](//image.made-in-china.com/226f3j00CTStVRrlOhYJ/Stainless-Seamless-Steel-Pipe-ASME-ASTM-SA312-304-316L-SA789-SA790-Uns-S31803-S32750.webp)
Assembly Inspection:
After cleaning inspection is good, then assemble on set to inspect its overall levelness, dimension, etc.Water Test:
Water test is a good way to check the distributor's working performance. The test items includes:
1. Liquid height in trough
2. Used time of one hole to fill the container
3. Calculate the coefficient variance(CV)
![Stainless Seamless Steel Pipe ASME/ASTM SA312 304 316L SA789 /SA790 Uns S31803 S32750](//image.made-in-china.com/226f3j00BTZaWzphJlYd/Stainless-Seamless-Steel-Pipe-ASME-ASTM-SA312-304-316L-SA789-SA790-Uns-S31803-S32750.webp)
Package Inspection:
1. Check the small parts quantity according to packing list
2. Check the protect method of the internals