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Stainless Steel Welded Pipes
Stainless steel welded pipe is one of the most widely used stainless steel products. Most stainless steel welded pipes are made of cold rolled or hot rolled stainless steel materials. The specifications and grades of stainless steel are divided into 304, 316 and 316L. Welded steel pipes can be used in food processing, pharmaceutical production, for the conveying and processing of liquids, gases and semi-solids in solutions. Of course, the application of stainless steel pipes is not limited to these areas. With the development of technology, stainless steel welded pipes can be used in a wider range of applications.
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Stainless Steel Welded Pipe: The Cost-Effective Choice for Industrial Piping
Stainless Steel Welded Pipe is manufactured by roll-forming a stainless steel plate or coil and then welding the seam longitudinally. It is the most popular type of pipe for general industrial applications due to its efficient production process, which makes it a more cost-effective and readily available option compared to seamless pipe, while still offering the excellent corrosion resistance and strength of stainless steel.
Key Applications of Welded Pipe
- Fluid Transport Systems: Used for water supply, drainage, and fire protection systems in buildings and factories.
- Air Systems: Used in compressed air and ventilation systems.
- Structural Applications: Used for handrails, balustrades, and structural supports where high aesthetic finish is not the primary concern.
- Food & Beverage Industry: Suitable for transporting fluids in low to medium pressure applications.
Specifications
SPEC: ASTM A312 / A358 / A778, ASME B36.19M
Grade: 304, 304L, 316, 316L
Thickness: Schedule 5S - 40S
Outside Diameter: 1/4" (13.7mm) - 80" (2032mm)
Length: 6 Meters
| Stainless Steel Welded Pipes | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Spec : ASTM A312 /A358 /A778 , ASME B36,19M | ||||||||||
| Nominal Diameter NPS | Outside Diameter (mm) | Nominal Wall Thickness | ||||||||
| Schedule 5S | Schedule 10S | Schedule 40S | ||||||||
| Wall Thickness (mm) | Weight (kg / m) | Wall Thickness (mm) | Weight (kg / m) | Wall Thickness (mm) | Weight (kg / m) | |||||
| Grade | Grade | Grade | ||||||||
| 304 / 304L | 316 / 316L | 304 / 304L | 316 / 316L | 304 / 304L | 316 / 316L | |||||
| 1/4 | 13.72 | - | - | - | 1.65 | 0.50 | 0.50 | 2.24 | 0.64 | 0.64 |
| 3/8 | 17.15 | - | - | - | 1.65 | 0.65 | 0.64 | 2.31 | 0.85 | 0.86 |
| 1/2 | 21.34 | 1.65 | 0.81 | 0.81 | 2.11 | 1.01 | 1.02 | 2.77 | 1.28 | 1.29 |
| 3/4 | 26.67 | 1.65 | 1.03 | 1.03 | 2.11 | 1.29 | 1.30 | 2.87 | 1.70 | 1.71 |
| 1 | 33.40 | 1.65 | 1.30 | 1.31 | 2.77 | 2.11 | 2.13 | 3.38 | 2.53 | 2.54 |
| 1 1/4 | 42.16 | 1.65 | 1.67 | 1.68 | 2.77 | 2.72 | 2.74 | 3.56 | 3.42 | 3.45 |
| 1 1/2 | 48.26 | 1.65 | 1.92 | 1.93 | 2.77 | 3.14 | 3.16 | 3.68 | 4.09 | 4.11 |
| 2 | 60.33 | 1.65 | 2.41 | 2.43 | 2.77 | 3.97 | 4.00 | 3.91 | 5.50 | 5.53 |
| 2 1/2 | 73.03 | 2.11 | 3.73 | 3.75 | 3.05 | 5.32 | 5.35 | 5.16 | 8.72 | 8.78 |
| 3 | 88.90 | 2.11 | 4.56 | 4.59 | 3.05 | 6.52 | 6.56 | 5.49 | 11.40 | 11.50 |
| 3 1/2 | 101.60 | 2.11 | 5.23 | 5.26 | 3.05 | 7.49 | 7.54 | 5.74 | 13.70 | 13.80 |
| 4 | 114.30 | 2.11 | 5.90 | 5.93 | 3.05 | 8.45 | 8.51 | 6.02 | 16.20 | 16.30 |
| 5 | 141.30 | 2.77 | 9.56 | 9.62 | 3.40 | 11.70 | 11.80 | 6.55 | 22.00 | 22.10 |
| 6 | 168.28 | 2.77 | 11.40 | 11.50 | 3.40 | 14.00 | 14.10 | 7.11 | 28.50 | 28.70 |
| 8 | 219.08 | 2.77 | 14.90 | 15.00 | 3.76 | 20.20 | 20.30 | 8.18 | 43.00 | 43.20 |
| 10 | 273.05 | 3.40 | 22.80 | 23.00 | 4.19 | 28.10 | 28.20 | 9.27 | 60.90 | 61.30 |
| 12 | 323.85 | 3.96 | 31.60 | 31.80 | 4.57 | 36.30 | 36.60 | 9.53 | 74.60 | 75.10 |
| 14 | 355.60 | 3.96 | 34.70 | 34.90 | 4.78 | 41.80 | 42.00 | 9.53 | 82.20 | 82.70 |
| 16 | 406.40 | 4.19 | 42.00 | 42.20 | 4.78 | 47.80 | 48.10 | 9.53 | 94.20 | 94.80 |
| 18 | 457.20 | 4.19 | 47.30 | 47.60 | 4.78 | 53.90 | 54.20 | 9.53 | 106.30 | 107.00 |
| 20 | 508.00 | 4.78 | 59.90 | 60.30 | 5.54 | 69.30 | 69.80 | 9.53 | 118.30 | 119.10 |
| 22 | 558.80 | 4.78 | 66.00 | 66.40 | 5.54 | 76.40 | 76.80 | - | - | - |
| 24 | 609.60 | 5.54 | 83.40 | 83.90 | 6.35 | 95.40 | 96.00 | 9.53 | 142.50 | 143.40 |
| 30 | 762.00 | 6.35 | 119.50 | 120.30 | 7.92 | 148.80 | 149.70 | - | - | - |
| 32 | 812.80 | Thickness : 6.35 ~ 30.00 mm Nominal diameter and wall thickness subject to approval of vendor and purchaser |
||||||||
| l | l | |||||||||
| 80 | 2032.00 | |||||||||
Tolerance : Stainless Steel Pipes
Spec : ASTM A312/A358 , JIS G3459, CNS 6331
| Item | Qutside Diameter | Thickness | Length | |||||
| Standard | ||||||||
| CNS 6331 | < 30.00mm | ± 0.3mm | < 2mm | ± 0.20mm | Definite cut lengths | |||
| JIS G3459 | ≥ 30.00 mm | ± 1% | ≥ 2 mm | ± 10% | ||||
| ASTM A312 | ≤ 48.26mm | + 0.40mm | - 0.80mm | + 6.0mm - 0mm |
||||
| > 48.26mm | ≤ 114.30mm | ± 0.80mm | ||||||
| > 114.30mm | ≤ 219.08mm | + 1.60mm | - 0.80mm | Nominal | ||||
| > 219.08mm | ≤ 457.20mm | + 2.40mm | - 0.80mm | Thickness | ||||
| > 457.20mm | ≤ 660.40mm | + 3.20mm | - 0.80mm | ± 12.5% | ||||
| > 660.40mm | ≤ 863.60mm | + 4.00mm | - 0.80mm | |||||
| > 863.60mm | + 4.80mm | - 0.80mm | ||||||
| ASTM A358 | Based on circumferential measurement ±0.50% | -0.30mm | L ≤ 7.3m | + 6.0mm | ||||
| Difference between major and minor outsude diameters 1% | - 0mm | |||||||
| Stainless Steel Welded Pipes | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Spec : ASTM A312 /A358 /A778 , ASME B36,19M | ||||||||||
| Nominal Diameter NPS | Outside Diameter (mm) | Nominal Wall Thickness | ||||||||
| Schedule 5S | Schedule 10S | Schedule 40S | ||||||||
| Wall Thickness (mm) | Weight (kg / m) | Wall Thickness (mm) | Weight (kg / m) | Wall Thickness (mm) | Weight (kg / m) | |||||
| Grade | Grade | Grade | ||||||||
| 304 / 304L | 316 / 316L | 304 / 304L | 316 / 316L | 304 / 304L | 316 / 316L | |||||
| 1/4 | 13.72 | - | - | - | 1.65 | 0.50 | 0.50 | 2.24 | 0.64 | 0.64 |
| 3/8 | 17.15 | - | - | - | 1.65 | 0.65 | 0.64 | 2.31 | 0.85 | 0.86 |
| 1/2 | 21.34 | 1.65 | 0.81 | 0.81 | 2.11 | 1.01 | 1.02 | 2.77 | 1.28 | 1.29 |
| 3/4 | 26.67 | 1.65 | 1.03 | 1.03 | 2.11 | 1.29 | 1.30 | 2.87 | 1.70 | 1.71 |
| 1 | 33.40 | 1.65 | 1.30 | 1.31 | 2.77 | 2.11 | 2.13 | 3.38 | 2.53 | 2.54 |
| 1 1/4 | 42.16 | 1.65 | 1.67 | 1.68 | 2.77 | 2.72 | 2.74 | 3.56 | 3.42 | 3.45 |
| 1 1/2 | 48.26 | 1.65 | 1.92 | 1.93 | 2.77 | 3.14 | 3.16 | 3.68 | 4.09 | 4.11 |
| 2 | 60.33 | 1.65 | 2.41 | 2.43 | 2.77 | 3.97 | 4.00 | 3.91 | 5.50 | 5.53 |
| 2 1/2 | 73.03 | 2.11 | 3.73 | 3.75 | 3.05 | 5.32 | 5.35 | 5.16 | 8.72 | 8.78 |
| 3 | 88.90 | 2.11 | 4.56 | 4.59 | 3.05 | 6.52 | 6.56 | 5.49 | 11.40 | 11.50 |
| 3 1/2 | 101.60 | 2.11 | 5.23 | 5.26 | 3.05 | 7.49 | 7.54 | 5.74 | 13.70 | 13.80 |
| 4 | 114.30 | 2.11 | 5.90 | 5.93 | 3.05 | 8.45 | 8.51 | 6.02 | 16.20 | 16.30 |
| 5 | 141.30 | 2.77 | 9.56 | 9.62 | 3.40 | 11.70 | 11.80 | 6.55 | 22.00 | 22.10 |
| 6 | 168.28 | 2.77 | 11.40 | 11.50 | 3.40 | 14.00 | 14.10 | 7.11 | 28.50 | 28.70 |
| 8 | 219.08 | 2.77 | 14.90 | 15.00 | 3.76 | 20.20 | 20.30 | 8.18 | 43.00 | 43.20 |
| 10 | 273.05 | 3.40 | 22.80 | 23.00 | 4.19 | 28.10 | 28.20 | 9.27 | 60.90 | 61.30 |
| 12 | 323.85 | 3.96 | 31.60 | 31.80 | 4.57 | 36.30 | 36.60 | 9.53 | 74.60 | 75.10 |
| 14 | 355.60 | 3.96 | 34.70 | 34.90 | 4.78 | 41.80 | 42.00 | 9.53 | 82.20 | 82.70 |
| 16 | 406.40 | 4.19 | 42.00 | 42.20 | 4.78 | 47.80 | 48.10 | 9.53 | 94.20 | 94.80 |
| 18 | 457.20 | 4.19 | 47.30 | 47.60 | 4.78 | 53.90 | 54.20 | 9.53 | 106.30 | 107.00 |
| 20 | 508.00 | 4.78 | 59.90 | 60.30 | 5.54 | 69.30 | 69.80 | 9.53 | 118.30 | 119.10 |
| 22 | 558.80 | 4.78 | 66.00 | 66.40 | 5.54 | 76.40 | 76.80 | - | - | - |
| 24 | 609.60 | 5.54 | 83.40 | 83.90 | 6.35 | 95.40 | 96.00 | 9.53 | 142.50 | 143.40 |
| 30 | 762.00 | 6.35 | 119.50 | 120.30 | 7.92 | 148.80 | 149.70 | - | - | - |
| 32 | 812.80 | Thickness : 6.35 ~ 30.00 mm Nominal diameter and wall thickness subject to approval of vendor and purchaser |
||||||||
| l | l | |||||||||
| 80 | 2032.00 | |||||||||
Tolerance : Stainless Steel Pipes
Spec : ASTM A312/A358 , JIS G3459, CNS 6331
| Item | Qutside Diameter | Thickness | Length | |||||
| Standard | ||||||||
| CNS 6331 | < 30.00mm | ± 0.3mm | < 2mm | ± 0.20mm | Definite cut lengths | |||
| JIS G3459 | ≥ 30.00 mm | ± 1% | ≥ 2 mm | ± 10% | ||||
| ASTM A312 | ≤ 48.26mm | + 0.40mm | - 0.80mm | + 6.0mm - 0mm |
||||
| > 48.26mm | ≤ 114.30mm | ± 0.80mm | ||||||
| > 114.30mm | ≤ 219.08mm | + 1.60mm | - 0.80mm | Nominal | ||||
| > 219.08mm | ≤ 457.20mm | + 2.40mm | - 0.80mm | Thickness | ||||
| > 457.20mm | ≤ 660.40mm | + 3.20mm | - 0.80mm | ± 12.5% | ||||
| > 660.40mm | ≤ 863.60mm | + 4.00mm | - 0.80mm | |||||
| > 863.60mm | + 4.80mm | - 0.80mm | ||||||
| ASTM A358 | Based on circumferential measurement ±0.50% | -0.30mm | L ≤ 7.3m | + 6.0mm | ||||
| Difference between major and minor outsude diameters 1% | - 0mm | |||||||