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info@mokshtubes.com

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High Quality Welded Pipes for Industrial Applications

Welded Pipes & Tubes (ERW & EFW)

Welded Pipes & Tubes

Welded tubes are a vital component in today’s industrial landscape, offering a combination of strength, durability, and cost-efficiency. These tubes are formed by rolling metal into shape and welding the seam, resulting in consistent dimensions and reliable performance across a wide range of applications.

With strong technical insight and a focus on project-specific demands, Moksh Tubes & Fittings LLP ensures that the right welded tube solutions are aligned with diverse operational environments and industry standards.

Specifications

Category Details
Material Stainless Steel, Duplex & Super Duplex Steel, Nickel Alloys, Inconel, Monel, Titanium, Zirconium, Tantalum, Aluminum, Cupro-Nickel, Copper & Brass, Carbon Steel, Alloy Steel
Grades As per ASTM/ASME standards – available in all mentioned alloys
Outer Diameter (OD) 3 mm to 610 mm / ¼” to 24” NB
Wall Thickness Available in all standard and custom schedules
Lengths Up to 6 meters or customized as per project requirements
Finishes Mill Finish, Electro Polished, Mechanical Polished, Matt Finish, Pickled & Passivated
Type ERW, EFW, LSAW, DSAW, SSAW, HSAW
Form Round, Rectangular, Square, Hydraulic, Hollow Section, Oval

Charts

Weight Chart

Nominal Bore Chart Outside Diameter (O.D)
(mm)		 Schedule 5S Schedule 10S Schedule 40S Schedule 80S Schedule 160S Schedule XXS
mm inches Wt Weight Wt Weight Wt Weight Wt Weight Wt Weight Wt Weight
3 1/8 10.3 1.24 0.276 1.24 0.28 1.73 0.37 2.41 0.47 — — — —
6 1/4 13.7 1.24 0.390 1.65 0.49 2.24 0.631 3.02 0.80 — — — —
10 3/8 17.1 1.24 00.490 1.63 0.49 2.31 00.845 3.02 1.10 — — — —
15 1/2 21.3 1.65 00.800 2.11 1.00 2.77 1.27 3.75 1.62 4.75 1.94 7.47 2.55
20 3/4 26.7 1.65 1.03 2.11 1.28 2.87 1.68 3.91 2.20 5.54 2.89 7.82 3.63
25 1 33.4 1.65 1.30 2.77 2.09 3.38 2.50 4.55 3.24 6.35 4.24 9.09 5.45
32 11.4 42.2 1.65 1.65 2.77 2.70 3.56 3.38 4.85 4.47 6.35 5.61 9.70 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 10.16 9.54
50 2 60.3 1.65 2.40 2.77 3.93 3.91 5.44 5.54 7.48 8.74 11.1 11.07 13.44
65 2 1/2 73.00 2.11 3.69 3.05 5.26 5.16 8.63 7.01 11.4 9.53 14.9 14.2 20.39
80 3 88.9 2.11 4.51 3.05 6.45 5.49 11.30 7.62 15.2 11.1 21.3 15.24 27.65
100 4 114.3 2.11 5.84 3.05 8.36 6.02 16.07 8.56 22.3 13.49 33.54 17.12 41.03
125 5 141.3 2.77 9.47 3.40 11.57 6.55 21.8 9.53 31.97 15.88 49.11 19.05 57.43
150 6 168.3 2.77 11.32 3.40 13.84 7.11 28.3 10.97 42.7 18.2 67.56 21.95 79.22
200 8 219.1 2.77 14.79 3.76 19.96 8.18 42.6 12.7 64.6 23.0 111.2 22.23 107.8
250 10 273.1 3.40 22.63 4.19 27.78 9.27 60.5 12.7 96.0 28.6 172.4 25.40 155.15
300 12 323.9 3.96 31.25 4.57 36.00 9.52 73.88 12.7 132.0 33.32 238.76 25.40 186.97
350 14 355.6 3.96 34.36 4.78 41.3 11.13 94.59 19.05 158.08 35.71 281.70 — —
400 16 406.4 4.19 41.56 4.78 47.29 12.7 123.30 21.41 203.33 40.46 365.11 — —
450 18 457.2 4.19 46.80 4.78 53.42 14.27 155.80 23.8 254.36 45.71 466.40 — —
500 20 508.0 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 — —

Size Charts

Schedule 5S – Size Chart (ASME B36.19)

NPS (inches) NB (mm) OD (mm) Wall Thickness (mm) Internal Diameter (mm) Weight (kg/m)
1/8 3 10.3 1.24 7.8 0.276
1/4 6 13.7 1.24 11.2 0.39
3/8 10 17.1 1.24 14.6 0.49
1/2 15 21.3 1.65 18.0 0.84
3/4 20 26.7 1.65 23.4 1.03
1 25 33.4 1.65 30.1 1.3
1 1/4 32 42.2 1.65 38.9 1.65
1 1/2 40 48.3 1.65 44.9 1.91
2 50 60.3 1.65 56.0 2.4
2 1/2 65 73.0 2.11 68.8 3.69
3 80 88.9 2.11 84.7 4.51
3 1/2 90 101.6 2.11 97.4 5.17
4 100 114.3 2.11 110.1 5.84
5 125 141.3 2.77 135.8 9.47
6 150 168.3 2.77 162.8 11.32
8 200 219.1 2.77 213.6 14.79
10 250 273.1 3.4 266.3 22.63
12 300 323.9 3.56 317.0 31.25
14 350 355.6 3.96 347.7 36.96
16 400 406.4 4.19 398.0 41.56
18 450 457.2 4.57 448.1 49.42
20 500 508.0 5.54 496.9 59.25
22 550 558.8 5.54 547.7 65.97
24 600 609.6 5.54 598.5 82.47

Schedule 10S – Size Chart (ASME B36.19)

NPS (inches) NB (mm) OD (mm) Wall Thickness (mm) Internal Diameter (mm) Weight (kg/m)
1/8 3 10.3 1.24 7.8 0.28
1/4 6 13.7 1.24 11.2 0.39
3/8 10 17.1 1.24 14.6 0.49
1/2 15 21.3 1.65 18.0 0.81
3/4 20 26.7 1.65 23.4 1.04
1 25 33.4 1.65 30.1 1.32
1 1/4 32 42.2 1.65 38.9 1.68
1 1/2 40 48.3 1.65 45.0 1.93
2 50 60.3 1.65 57.0 2.43
2 1/2 65 73.0 1.65 69.7 2.96
3 80 88.9 1.65 85.6 3.62
3 1/2 90 101.6 1.65 98.3 4.14
4 100 114.3 1.65 111.0 4.67
5 125 141.3 1.65 138.0 5.79
6 150 168.3 1.65 165.0 6.91
8 200 219.1 2.11 214.9 11.51
10 250 273.0 2.77 267.5 18.81
12 300 323.8 3.05 317.7 24.59
14 350 355.6 3.40 348.8 30.10
16 400 406.4 3.40 399.6 34.44
18 450 457.0 3.80 449.4 43.28
20 500 508.0 3.80 500.4 48.15
22 550 559.0 4.00 551.0 55.79
24 600 610.0 4.00 602.0 60.92

Schedule 40S – Size Chart (ASME B36.19)

NPS (inches) NB (mm) OD (mm) Wall Thickness (mm) Internal Diameter (mm) Weight (kg/m)
1/8 3 10.3 1.73 6.84 0.37
1/4 6 13.7 2.24 9.22 0.64
3/8 10 17.1 2.31 12.48 0.86
1/2 15 21.3 2.77 15.76 1.27
3/4 20 26.7 2.87 20.96 1.70
1 25 33.4 3.38 26.64 2.46
1 1/4 32 42.2 3.56 35.08 3.61
1 1/2 40 48.3 3.68 40.94 4.18
2 50 60.3 3.91 52.48 5.44
2 1/2 65 73.0 5.16 62.68 8.63
3 80 88.9 5.49 77.92 11.29
3 1/2 90 101.6 5.74 90.12 14.02
4 100 114.3 6.02 102.26 17.15
5 125 141.3 6.55 128.20 23.85
6 150 168.3 7.11 154.08 30.70
8 200 219.1 8.18 202.74 49.56
10 250 273.0 9.27 254.46 73.50
12 300 323.8 10.31 303.18 95.54
14 350 355.6 11.13 333.34 112.63
16 400 406.4 12.70 380.99 144.27
18 450 457.0 14.27 428.46 179.28
20 500 508.0 15.09 477.82 213.93
22 550 559.0 15.09 528.82 235.40
24 600 610.0 15.88 578.24 274.06

Schedule 80S – Size Chart (ASME B36.19)

NPS (inches) NB (mm) OD (mm) Wall Thickness (mm) Internal Diameter (mm) Weight (kg/m)
1/8 3 10.3 1.73 6.84 0.37
1/4 6 13.7 3.02 7.66 0.83
3/8 10 17.1 3.20 10.70 1.13
1/2 15 21.3 3.73 13.84 1.63
3/4 20 26.7 3.91 18.88 2.30
1 25 33.4 4.55 24.30 3.38
1 1/4 32 42.2 4.85 32.50 4.84
1 1/2 40 48.3 5.08 38.14 5.61
2 50 60.3 5.54 49.22 7.48
2 1/2 65 73.0 7.01 58.98 11.76
3 80 88.9 7.62 73.66 15.74
3 1/2 90 101.6 8.08 85.44 20.20
4 100 114.3 8.56 97.18 25.10
5 125 141.3 9.53 122.24 36.46
6 150 168.3 10.97 146.36 49.56
8 200 219.1 12.70 193.70 77.10
10 250 273.0 15.09 242.82 114.00
12 300 323.8 17.48 288.84 153.00
14 350 355.6 19.05 317.50 180.00
16 400 406.4 21.44 363.52 227.50
18 450 457.0 23.83 409.34 282.50
20 500 508.0 26.18 455.64 342.00
22 550 559.0 28.58 501.84 408.00
24 600 610.0 30.96 548.08 480.00

Schedule 160S – Size Chart (ASME B36.19)

NPS (inches) NB (mm) OD (mm) Wall Thickness (mm) Internal Diameter (mm) Weight (kg/m)
1/8 3 10.3 2.41 5.48 0.49
1/4 6 13.7 3.02 7.66 0.83
3/8 10 17.1 3.20 10.70 1.13
1/2 15 21.3 4.09 13.12 1.75
3/4 20 26.7 4.55 17.60 2.63
1 25 33.4 6.35 20.70 4.51
1 1/4 32 42.2 6.35 29.50 6.12
1 1/2 40 48.3 7.14 34.02 7.92
2 50 60.3 8.71 42.88 11.06
2 1/2 65 73.0 9.53 53.94 14.90
3 80 88.9 11.13 66.64 21.31
3 1/2 90 101.6 12.70 76.20 29.00
4 100 114.3 13.49 87.32 34.35
5 125 141.3 15.88 109.54 53.30
6 150 168.3 18.26 131.78 75.53
8 200 219.1 23.01 173.08 123.90
10 250 273.0 28.58 215.84 190.50
12 300 323.8 33.32 257.16 268.00
14 350 355.6 35.71 284.18 327.00
16 400 406.4 40.49 325.42 429.50
18 450 457.0 45.24 366.52 544.00
20 500 508.0 50.01 407.98 677.50
22 550 559.0 53.98 451.04 823.00
24 600 610.0 59.54 490.92 997.00

Schedule XXS – Size Chart (ASME B36.19)

NPS (inches) NB (mm) OD (mm) Wall Thickness (mm) Internal Diameter (mm) Weight (kg/m)
1/8 3 10.3 2.41 5.48 0.49
1/4 6 13.7 3.02 7.66 0.83
3/8 10 17.1 3.20 10.70 1.13
1/2 15 21.3 4.78 11.74 1.98
3/4 20 26.7 6.02 14.66 3.32
1 25 33.4 7.47 18.46 5.25
1 1/4 32 42.2 9.09 24.02 8.26
1 1/2 40 48.3 10.15 28.00 10.68
2 50 60.3 11.07 38.16 14.82
2 1/2 65 73.0 13.49 46.02 21.56
3 80 88.9 15.24 58.42 29.83
3 1/2 90 101.6 17.12 67.36 39.00
4 100 114.3 18.26 77.78 47.17
5 125 141.3 21.95 97.40 70.65
6 150 168.3 25.40 117.50 99.57
8 200 219.1 28.58 161.94 144.45
10 250 273.0 31.75 209.50 202.00
12 300 323.8 36.53 250.74 281.25
14 350 355.6 38.89 277.82 338.00
16 400 406.4 44.45 317.50 442.50
18 450 457.0 50.01 356.98 562.00
20 500 508.0 55.56 396.88 697.00
22 550 559.0 58.96 441.08 826.00
24 600 610.0 63.50 483.00 984.00

Grades Available

Welded pipes & tubes are available in a wide range of grades:

Material Grades
Nickel Alloys Hastelloy C276, C22, C4, B2, B3, C2000, G3, G30, Hastelloy X
Inconel 600, 601, 625, 690, 718, X750
Incoloy 800, 825, 925
Monel 400, K500, R405
Nickel 200, 201, A286 660
Titanium Alloys Grade 1, 2, 4, 4 ELI, 5, 5 ELI, 23, 7, 7NB, 9, 12
Duplex / Super Duplex 2507, S32760, S31803, 2205
Austenitic Stainless Steel 304, 310, 316, 316Ti, 317, 321, 347, 309, Nitronic 50, Nitronic 60
High Strength Stainless Steel 17-4PH, 15-5PH, 14-4PH, 410, 420, 420HC, 430F, 416, 431, 440A, 440B, 440C, 422, 403, 405
Super Austenitic Stainless Steel 904L, SMO 254, SMO 654, AL-6XN, Alloy 926, 253-MA
Zirconium 702, 704, 705
Tantalum R05200, R05252, R05255
Engineering Steels EN8, EN9, EN19, EN24, EN31, EN36, EN47, D2, 1045, 1055, 4140, 4130, 4340, P1, P11, P12, P22
Carbon Steel ASTM A106, A105, A36, A234 WPB, EN10210, IS2062
Aluminium Alloys HE30, 6082-T6, 6061-T6, 5083, 7075, 2014-T6, 6063, 1100, 1200, 6012
Copper Alloys CU-NI 70/30, 90/10, C44300, C46400, Aluminium Bronze, NAB, C71520, C71500
C63000, Brass, Naval Brass, Beryllium Copper
Special Alloys Tungsten, Carbide, Nitinol, Nimonic, Stellite, Tantalum
Haynes Superalloys Haynes 188, 230, 160, 242
NICKLE ALLOYS
NICKLE ALLOYS
STAINLESS STEEL
STAINLESS STEEL
DUPLEX & SUPER
DUPLEX & SUPER
TITANIUM ALLOYS
TITANIUM ALLOYS
Haynes Superalloys
Haynes Superalloys
Inconel
Inconel

Applications

Welded pipes and tubes are indispensable components in numerous industries due to their exceptional strength, precise dimensional accuracy, and cost-effectiveness. These versatile products are widely utilized for structural purposes and fluid transport systems, particularly in demanding environments.

Oil and Gas Industry
Welded pipes and tubes find extensive use in the energy sector, including:
  • Onshore and offshore pipeline networks
  • Crude oil and natural gas transmission systems
Power Generation
Power plants rely on welded pipes and tubes to ensure operational efficiency in areas such as:
  • Boiler tubes, superheaters, and economizers
  • Condensers and feedwater systems
  • Heat recovery steam generators (HRSG)
Chemical and Petrochemical Industry
For handling corrosive substances and high-pressure environments, welded pipes and tubes are essential in:
  • Transporting corrosive fluids and gases
  • Process piping within chemical reactors
  • Distillation and separation systems
Construction and Infrastructure
Welded pipes and tubes are critical in the construction sector for:
  • Building structures and architectural frameworks
  • Bridges, tunnels, and industrial sheds
  • Water distribution and sewage systems
Automotive and Transport
The automotive and heavy transport industries heavily utilize welded pipes and tubes for:
  • Exhaust systems and fuel lines
  • Hydraulic systems and structural components
  • Roll cages and chassis frameworks
Food, Beverage, and Dairy Processing
Hygienic-grade welded pipes and tubes ensure safe and sanitary applications in:
  • Sanitary fluid transfer systems
  • Process lines for dairy and beverage production
  • Clean-in-place (CIP) and sterilization systems
Marine and Shipbuilding
Welded pipes and tubes also serve an integral role in:
  • Seawater piping systems
  • Ballast and bilge systems
  • Structural frameworks for ships and offshore platforms
HVAC and Plumbing
Welded pipes and tubes provide reliable solutions for the HVAC and plumbing sectors, including:
  • Hot and cold water distribution
  • Heating, ventilation, and air conditioning systems

HASTELLOY C-276's unique combination of corrosion resistance, weldability, and mechanical durability makes it a reliable material for mission-critical applications where long-term performance is non-negotiable.

Uses of Welded Pipes and Tubes

Welded tubes are used extensively across multiple industries, including:

Construction and Infrastructure

structural supports, frameworks, scaffolding, and fencing

Oil & Gas

pipelines, processing systems, and offshore platforms

Petrochemical and Chemical Industries

equipment, transfer lines, and high-performance systems

Automotive and Transport

chassis components, axles, and exhaust systems

Plumbing and Water Supply

pipelines for water distribution and drainage

Thermal Equipment

boiler tubes, heat exchangers, and condensers

Advantages of Welded Pipes & Tubes

Cost-Effective Production

Typically more economical than seamless alternatives

Dimensional Accuracy

Ensures uniformity in thickness and shape

Availability in Custom Lengths & Sizes

Easily fabricated to meet specific requirements

Efficient Manufacturing

Supports high-volume production and timely availability

Strong Weld Joints

Modern techniques provide reliable and durable seams

Welded tubes continue to be a preferred choice in sectors where precision, efficiency, and long-term performance are critical. With a commitment to quality and deep industry knowledge, Moksh Tubes & Fittings LLP delivers solutions that support modern engineering and infrastructure needs.

WHY CHOOSE US?

Global Reach: Sourcing rare sizes and materials worldwide
Certified Assurance: ISO 9001:2015 and compliance with ASTM, ASME, API
Competitive Pricing: Quality products at practical costs
Timely Dispatch: Delivery aligned with your project timeline
Technical Expertise: Responsive assistance from inquiry to execution
Extensive Stock of Welded Pipes and Tubes: Immediate availability with 200+ tons in inventory

FAQ's

What are welded pipes and tubes?

Welded pipes and tubes are manufactured by rolling a metal plate or strip into a cylindrical shape and welding the seam. They are widely used in industrial piping systems, structural applications, and fluid transportation due to their strength, precision, and cost-effectiveness.

Which materials are used for manufacturing welded pipes and tubes?

Welded pipes and tubes are available in various materials such as Stainless Steel (304, 316, 310), Carbon Steel, Alloy Steel, Duplex & Super Duplex, Copper Alloys, Titanium, and Nickel Alloys. The choice depends on the required corrosion resistance, temperature, and pressure conditions.

What are the advantages of welded pipes compared to seamless pipes?

Welded pipes offer several advantages including uniform wall thickness, larger size availability, and lower production costs. They are ideal for applications with moderate pressure and temperature requirements. Additionally, welded pipes provide excellent surface finish and dimensional accuracy.

What industries commonly use welded pipes and tubes?

Welded pipes and tubes are used across multiple industries including oil & gas, petrochemical, power generation, water treatment, marine, construction, and food & pharmaceutical sectors. Their versatility makes them suitable for both fluid transport and structural applications.

What types of welded pipes and tubes are supplied by Moksh Tubes & Fittings LLP?

Moksh Tubes & Fittings LLP offers a comprehensive range of welded pipes and tubes such as:

  • ERW (Electric Resistance Welded) Pipes & Tubes
  • EFW (Electric Fusion Welded) Pipes
  • LSAW (Longitudinal Submerged Arc Welded) Pipes
  • Spiral Welded Pipes
  • Heat Exchanger & Condenser Tubes
  • Custom Fabricated Welded Tubing

All products are manufactured and tested according to ASTM, ASME, DIN, and EN standards.

Contact Us

For further information, quotes, or customized welded-pipes products, Moksh Tubes & Fittings LLP your dependable partner in aluminum alloys.

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