Stainless steel pipe spools specification
Dimensions
SS metal spool flange standard
Wall thickness
SS 904L tubing spools heat treatment
Stainless steel flanged pipe spool welder test
Fabrication process
Welding standard
Fabrication parts
Key steps for SS pipe spool design
Successfully done SS pipe spool work in Malaysia, Maldives, Saudi Arabia and New Zealand
SS spool fabrication tolerances
| SS metal Bends | Shall not exceed 8% of nominal dia of the pipe |
| Stainless steel mitred joints | 3 deg or less |
| SS flanges | From square position : 2.5mm/m or ±1/32" or ±0.8 mm |
| Stainless steel alloy pipe spools | A plain end, 100-150 mm, 4-6" |
Stainles steel metal pipeline spool equivalent properties
| SS Grades | W.Nr. | UNS | EN |
|---|---|---|---|
| 304 | 1.4301 | S30400 | X5CrNi18.10 |
| 304L | 1.4306 | S30403 | X2CrNi19.11 |
| 310S | 1.4845 | S31008 | X12CrNi25.21 |
| 321 | 1.4541 | S32100 | X6CrNiTi18.10 |
| 316 | 1.4401 | S31600 | X5CrNiMo17.12.2 |
| 316L | 1.4404 | S31603 | X2CrNiMo17.12.2 |
| AISI 904L | 1.4539 | N08904 | X1NiCrMoCu25.20.5 |
SS alloy pipe spools
Stainless steel flanged pipe spool
SS metal tubing spools
Stainless steel alloy pipe spool fabrication
SS pipe spooling with both end flange
Stainless pipe spool with weld neck flange
Stainless steel alloy flanged pipe spool size chart
| Consturction | Seamless Fabricated | Welded Fabricated | Seamless Fabricated | Welded Fabricated | Welded Fabricated | |
|---|---|---|---|---|---|---|
| Size Range | 0.5″ to 30″ | 0.5″ to 48″ | 0.5″ to 24″ | 0.5″ to 74″ | 0.5″ to 96″ | |
| Schedule / Thickness | Min Thk (mm) | 10s/3 mm | 10s/8 mm | 10s/3 mm | 10s/6 mm | 10s/8 mm |
| Max Thk (mm) | XXS/85 mm | XXS/85 mm | XXS/70 mm | XXS/70 mm | XXS/85 mm | |
SS tubing spools chemical compositions
| Element | S | C | P | Si | Ni | Mn | Cr |
|---|---|---|---|---|---|---|---|
| SS 304 | 0.03 max | 0.08 | 0.045 max | 1.0 max | 8.0 – 11.0 | 2.0 max | 18.0 – 20.0 |
| SS 304L | 0.03 max | 0.35 | 0.045 max | 1.0 max | 8.0 – 13.0 | 2.0 max | 18.0 – 20.0 |
Stainless steel pipe spools mechanical properties
| Element | Density | Tensile Strength | Melting Point | Elongation | Yield Strength (0.2%Offset) |
|---|---|---|---|---|---|
| SS 304 | 8.0 g/cm3 | Psi – 75000 , MPa – 515 | 1400 °C (2550 °F) | 35 % | Psi – 30000 , MPa – 205 |
| SS 304L | 8.0 g/cm3 | Psi – 75000 , MPa – 515 | 1400 °C (2550 °F) | 35 % | Psi – 30000 , MPa – 205 |
SS pipe spool fabrication parts
Stainless steel pipe spools advantages