Welded Stainless Steel Pipe

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welded stainless steel pipe,stainless steel welded pipe,ASTM A312 welded pipe,304 welded pipe,316L welded pipe

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Welded Stainless Steel Pipe

SS welded pipe
Tubería soldada de acero inoxidable TP316L de gran diámetro para desalinización
100% X-ray tested welded SS pipe 316L for high-pressure fluid transportation
Large diameter welded stainless steel pipe ASTM A358 for industrial projects
ASTM A312 TP304 welded stainless steel pipe with longitudinal weld bead removal

Product Name: Welded Stainless Steel Pipe, Stainless Steel Welded Pipe
Outside Diameter: 6 mm - 2032 mm
Wall Thickness: 0.5 mm - 50 mm, SCH 5S - SCH 160
Length: 5.8 m, 6 m, 11.8 m, 12 m or custom length up to 18 m
Surface: Pickled, bright annealed (BA), polished
Process: ERW, EFW, welded
Standards: ASTM A312, ASTM A554, ASTM A269, ASTM A789, ASTM A790
Grades: 304, 304L, 316, 316L, 310S, 321, 347H, S31803, S32205, S32750, S32760
Applications: Boilers, heat exchangers, petrochemical, refineries, chemical processing, water treatment, food and beverage, sanitary systems




  • Overview
  • Specification
  • Standard
  • Process
  • Packing

Welded Stainless Steel Pipes (ERW, EFW, LSAW)

High-integrity welded piping solutions manufactured through precision forming and automated welding (TIG, Plasma, or Submerged Arc). Our pipes offer high dimensional accuracy and superior surface quality for structural and fluid transport applications.


1.Quick Specifications

Outside Diameter (OD): 6 mm – 2032 mm

Wall Thickness (WT): 0.5 mm – 50 mm (SCH 5S to SCH 160)

Length: 5.8m, 6m, 11.8m, 12m, or Customized (up to 18m)


2. Standards & Material Grades

Category

Standards

Common Grades

Austenitic

ASTM A312, A358, A249, A269

304/304L, 316/316L, 310S, 321

Duplex

ASTM A789, A790, A928

S31803, S32205, S32750, S32760

Specialty

ASTM B673, B675, B676

904L, 254SMO, Monel, Inconel


3. Key Application Areas

Industrial Infrastructure: Water treatment, desalination, and sewage systems.

Energy & Chemical: Low-pressure petrochemical piping, heat exchangers, and pulp/paper industry.

Construction & Decoration: Architectural structures, handrails, and ornamental tubing.

Food & Sanitary: Beverage production, pharmaceutical lines, and HVAC systems.


4. Finish & Protection

Surface: Pickled, Polished

Ends: Plain, Beveled, or Threaded; protected by plastic caps.

Packing: Sea-worthy hexagonal bundles or wooden cases with waterproof wrapping.

Different Standard for tolerance requests

Specification Application OD Tolerance (mm) WT Tolerance (%) Length Tol (mm) Key Testing Requirements
ASTM-A213 Seamless Boiler/Heat Exchanger ±0.1016 to ±0.381 +20% / -0 +3.175 / -0 Flattening, Flare, Hardness, 100% Hydrostatic
ASTM-A249 Welded Boiler/Heat Exchanger ±0.1016 to ±0.381 ±10% +3.175 to +4.762 Tension, Flattening, Flange, Reverse Bend, Hydro
ASTM-A269 Seamless/Welded General Service ±0.13 to ±0.76 ±10% to ±15% +3.2 to +4.8 Flare (SMLS), Flange (WLD), Hardness, Hydro
ASTM-A270 Sanitary Tubing (Food/Pharma) ±0.05 to ±0.08 ±10% +3.2 Reverse Flattening, 100% Hydro, Surface Polish
ASTM-A312 Seamless/Welded Pipe +0.4/-0.79 to +1.59/-0.79 -12.50% +6.4 / -0 Tension, Flattening, 100% Hydrostatic


Stainless Steel Pipe Size Table Dimension

Nominal Bore Outside         (mm) Sch-5S Sch-10S Sch-40S Sch-80S Sch-160S Sch-XXS
mm INCH Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight
(Kg/mt) (Kg/mt) (Kg/mt) (Kg/mt) (Kg/mt) (Kg/mt)
6 1/8" 10.3 - - 1.24 0.28 1.73 0.37 2.41 0.47 - - - -
8 1/4" 13.7 - - 1.65 0.49 2.24 0.63 3.02 0.8 - - - -
10 3/8" 17.1 - - 1.65 0.63 2.31 0.84 3.2 1.1 - - - -
15 1/2" 21.3 1.65 0.8 2.11 1 2.77 1.27 3.73 1.62 4.78 1.95 7.47 2.55
20 3/4" 26.7 1.65 1.03 2.11 1.28 2.87 1.69 3.91 2.2 5.56 2.9 7.82 3.64
25 1" 33.4 1.65 1.31 2.77 2.09 3.38 2.5 4.55 3.24 6.35 4.24 9.09 5.45
32 1.1/4" 42.2 1.65 1.66 2.77 2.69 3.56 3.39 4.85 4.47 6.35 5.61 9.7 7.77
40 1.1/2" 48.3 1.65 1.91 2.77 3.11 3.68 4.05 5.08 5.41 7.14 7.25 10.15 9.56
50 2" 60.3 1.65 2.4 2.77 3.93 3.91 5.44 5.54 7.48 8.74 11.11 11.07 13.44
65 2.1/2" 73 2.11 3.71 3.05 5.26 5.16 8.63 7.01 11.41 9.53 14.92 14.02 20.39
80 3" 88.9 2.11 4.54 3.05 6.46 5.49 11.29 7.62 15.27 11.13 21.35 15.24 27.68
90 3.1/2" 101.6 2.11 5.2 3.05 7.42 5.74 13.57 8.08 18.63 - - - -
100 4" 114.3 2.11 5.87 3.05 8.38 6.02 16.07 8.56 22.32 13.49 33.54 17.12 41.03
125 5" 141.3 2.77 9.52 3.4 11.59 6.55 21.77 9.53 30.97 15.88 49.11 19.05 57.43
150 6" 168.3 2.77 11.38 3.4 13.86 7.11 28.26 10.97 42.56 18.26 67.56 21.95 79.22
200 8" 219.1 2.77 14.88 3.76 20.08 8.18 42.55 12.7 64.64 23.01 111.27 22.23 107.92
250 10" 273 3.4 22.75 4.19 27.95 9.27 60.31 15.09 96.01 28.58 172.26 25.4 155.15
300 12" 323.8 3.96 31.43 4.57 36.21 9.53 73.88 17.48 132.04 33.32 238.76 25.4 186.91
350 14 355.6 3.96 34.36 4.78 41.3 11.13 94.59 19.05 158.08 35.71 281.7 - -
400 16 406.4 4.19 41.56 4.78 47.29 12.7 123.3 21.41 203.33 40.46 365.11 - -
450 18 457.2 4.19 46.8 4.78 53.42 14.27 155.8 23.8 254.36 45.71 466.4 - -
500 20 508 4.78 59.25 5.54 68.71 15.09 183.42 26.19 311.2 49.99 564.68 - -
600 24 609.6 5.54 82.47 6.35 94.45 17.48 255.41 30.96 442.08 59.54 808.22 - -
Application Category International Standard Common Steel Grades
General Industrial Service ASTM A312 TP304, TP304L, TP316, TP316L, TP321, TP347, TP904L
EN 10217-7 1.4301 (304), 1.4307 (304L), 1.4401 (316), 1.4404 (316L)
Large Diameter / Low Pressure ASTM A358 Class 1 to 5: Grades 304, 304L, 316, 316L, 321
Boiler & Heat Exchanger ASTM A249 TP304, TP304L, TP316, TP316L, TP317L, TP321
Sanitary / Food Industry ASTM A270 TP304, TP304L, TP316L
DIN 11850 1.4301, 1.4307, 1.4404
Duplex Stainless Steel ASTM A928 S31803 (2205), S32205, S32750 (Super Duplex)
Mechanical & Structural ASTM A554 MT304, MT304L, MT316, MT316L (Ornamental/Structural)

Stainless Steel Welded Pipe Production Process

Different Standard for tolerance requests

Specification Application OD Tolerance (mm) WT Tolerance (%) Length Tol (mm) Key Testing Requirements
ASTM-A213 Seamless Boiler/Heat Exchanger ±0.1016 to ±0.381 +20% / -0 +3.175 / -0 Flattening, Flare, Hardness, 100% Hydrostatic
ASTM-A249 Welded Boiler/Heat Exchanger ±0.1016 to ±0.381 ±10% +3.175 to +4.762 Tension, Flattening, Flange, Reverse Bend, Hydro
ASTM-A269 Seamless/Welded General Service ±0.13 to ±0.76 ±10% to ±15% +3.2 to +4.8 Flare (SMLS), Flange (WLD), Hardness, Hydro
ASTM-A270 Sanitary Tubing (Food/Pharma) ±0.05 to ±0.08 ±10% +3.2 Reverse Flattening, 100% Hydro, Surface Polish
ASTM-A312 Seamless/Welded Pipe +0.4/-0.79 to +1.59/-0.79 -12.50% +6.4 / -0 Tension, Flattening, 100% Hydrostatic


Stainless Steel Pipe Size Table Dimension

Nominal Bore Outside         (mm) Sch-5S Sch-10S Sch-40S Sch-80S Sch-160S Sch-XXS
mm INCH Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight Wt (mm) Weight
(Kg/mt) (Kg/mt) (Kg/mt) (Kg/mt) (Kg/mt) (Kg/mt)
6 1/8" 10.3 - - 1.24 0.28 1.73 0.37 2.41 0.47 - - - -
8 1/4" 13.7 - - 1.65 0.49 2.24 0.63 3.02 0.8 - - - -
10 3/8" 17.1 - - 1.65 0.63 2.31 0.84 3.2 1.1 - - - -
15 1/2" 21.3 1.65 0.8 2.11 1 2.77 1.27 3.73 1.62 4.78 1.95 7.47 2.55
20 3/4" 26.7 1.65 1.03 2.11 1.28 2.87 1.69 3.91 2.2 5.56 2.9 7.82 3.64
25 1" 33.4 1.65 1.31 2.77 2.09 3.38 2.5 4.55 3.24 6.35 4.24 9.09 5.45
32 1.1/4" 42.2 1.65 1.66 2.77 2.69 3.56 3.39 4.85 4.47 6.35 5.61 9.7 7.77
40 1.1/2" 48.3 1.65 1.91 2.77 3.11 3.68 4.05 5.08 5.41 7.14 7.25 10.15 9.56
50 2" 60.3 1.65 2.4 2.77 3.93 3.91 5.44 5.54 7.48 8.74 11.11 11.07 13.44
65 2.1/2" 73 2.11 3.71 3.05 5.26 5.16 8.63 7.01 11.41 9.53 14.92 14.02 20.39
80 3" 88.9 2.11 4.54 3.05 6.46 5.49 11.29 7.62 15.27 11.13 21.35 15.24 27.68
90 3.1/2" 101.6 2.11 5.2 3.05 7.42 5.74 13.57 8.08 18.63 - - - -
100 4" 114.3 2.11 5.87 3.05 8.38 6.02 16.07 8.56 22.32 13.49 33.54 17.12 41.03
125 5" 141.3 2.77 9.52 3.4 11.59 6.55 21.77 9.53 30.97 15.88 49.11 19.05 57.43
150 6" 168.3 2.77 11.38 3.4 13.86 7.11 28.26 10.97 42.56 18.26 67.56 21.95 79.22
200 8" 219.1 2.77 14.88 3.76 20.08 8.18 42.55 12.7 64.64 23.01 111.27 22.23 107.92
250 10" 273 3.4 22.75 4.19 27.95 9.27 60.31 15.09 96.01 28.58 172.26 25.4 155.15
300 12" 323.8 3.96 31.43 4.57 36.21 9.53 73.88 17.48 132.04 33.32 238.76 25.4 186.91
350 14 355.6 3.96 34.36 4.78 41.3 11.13 94.59 19.05 158.08 35.71 281.7 - -
400 16 406.4 4.19 41.56 4.78 47.29 12.7 123.3 21.41 203.33 40.46 365.11 - -
450 18 457.2 4.19 46.8 4.78 53.42 14.27 155.8 23.8 254.36 45.71 466.4 - -
500 20 508 4.78 59.25 5.54 68.71 15.09 183.42 26.19 311.2 49.99 564.68 - -
600 24 609.6 5.54 82.47 6.35 94.45 17.48 255.41 30.96 442.08 59.54 808.22 - -
Application Category International Standard Common Steel Grades
General Industrial Service ASTM A312 TP304, TP304L, TP316, TP316L, TP321, TP347, TP904L
EN 10217-7 1.4301 (304), 1.4307 (304L), 1.4401 (316), 1.4404 (316L)
Large Diameter / Low Pressure ASTM A358 Class 1 to 5: Grades 304, 304L, 316, 316L, 321
Boiler & Heat Exchanger ASTM A249 TP304, TP304L, TP316, TP316L, TP317L, TP321
Sanitary / Food Industry ASTM A270 TP304, TP304L, TP316L
DIN 11850 1.4301, 1.4307, 1.4404
Duplex Stainless Steel ASTM A928 S31803 (2205), S32205, S32750 (Super Duplex)
Mechanical & Structural ASTM A554 MT304, MT304L, MT316, MT316L (Ornamental/Structural)

Stainless Steel Welded Pipe Production Process

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