Carbon Steel LSAW Pipes Manufacturer in India
Carbon Steel LSAW Pipes Manufacturer in India
Sachiya Steel International is a trusted Carbon Steel LSAW Pipes Manufacturer in India, established in 2005 and based in Mumbai. With 20+ years of industry experience, we manufacture, supply, and export industrial pipes and tubes to customers in more than 85 countries. Our product range covers carbon steel, stainless steel, duplex, super duplex, alloy steel, and nickel alloy pipes for demanding industrial applications.
We serve EPC contractors, manufacturers, fabricators, distributors, and engineering companies across oil & gas, petrochemical, chemical, power, marine, construction, and other industries. Our pipes are supplied in line with relevant ASTM, ASME, ANSI, DIN, and ISO standards, with inspection and material documentation available as required. Backed by certified quality systems and reliable manufacturing and sourcing capabilities, we support standard, bulk, and project requirements with consistent quality and timely delivery.
What Are Carbon Steel LSAW Pipes?
Carbon steel LSAW pipes are large-diameter welded pipes made from carbon steel plates. LSAW stands for Longitudinal Submerged Arc Welded, while DSAW (Double Submerged Arc Welded) is another common name used for this type of pipe. Each pipe has a straight longitudinal weld running along its full length.
The manufacturing process starts with careful inspection of the steel plate, followed by edge preparation and forming. The plate is shaped into a round pipe using methods such as JCO or UO forming. The seam is then welded from both the inside and outside using submerged arc welding. After welding, the pipe undergoes ultrasonic and radiographic testing to check weld quality. Mechanical expansion helps achieve accurate dimensions and reduce forming stress. The final stages may include hydrostatic testing, end beveling, and coating.
Since LSAW pipes use thick steel plates, they can handle high pressure and demanding service conditions. They are widely used for oil and gas pipelines, offshore applications, water transmission, and heavy-duty piling projects.
Carbon Steel LSAW Pipe
High-quality Carbon Steel LSAW Pipes manufactured for demanding applications across oil & gas, petrochemical, power generation, construction and engineering industries. Available in multiple grades, sizes, wall thicknesses and manufacturing specifications.
Types of Carbon Steel LSAW Pipes
As a Carbon Steel LSAW Pipes Manufacturer, we offer pipes in different types based on their forming method, application, and surface finish. The main types include:
- JCOE LSAW Pipes: The JCOE process forms the steel plate step by step into J, C, and O shapes. This method works well for producing different pipe diameters and wall thicknesses.
- UOE LSAW Pipes: The UOE process first forms the plate into U and O shapes before welding. It is suitable for producing longer runs of pipes in standard sizes.
- API 5L LSAW Pipes: These pipes are commonly used for transporting oil, gas, and water. They are available in different grades to meet pipeline requirements.
- ASTM A252 LSAW Pipes: Designed mainly for piling applications, these pipes provide the strength required for foundations and heavy construction projects.
- ASTM A671 and A672 LSAW Pipes: These pipes are used in pressure piping systems, including applications in power plants, refineries, and industrial facilities.
- Coated LSAW Pipes: We supply bare, varnished, and coated pipes. Options include 3LPE, 3LPP, FBE, liquid epoxy, cement mortar lining, and internal epoxy lining, depending on the application.
API 5L Carbon Steel LSAW Pipes, ASTM A252 Piling Pipes, ASTM A671 and A672 LSAW Pipes, ASTM A139 LSAW Pipes, Coated Carbon Steel LSAW Pipes, Carbon Steel LSAW Pipes Manufacturers and Suppliers in India
We are one of the carbon steel LSAW pipes manufacturers in India that projects call when the pipe is large and the schedule is tight. We buy plate from approved mills, form and weld it, and ship bare or coated pipe.
For transmission lines, our API 5L LSAW pipes run in PSL1 and PSL2, from Gr. B to X80. For foundations, bridges, and jetties, our ASTM A252 piling pipes come in Gr. 1, 2, and 3. For refinery and power plant piping, our ASTM A671 and A672 LSAW pipes come in CC60, CC65, and CC70 classes, heat treated when the class requires it. For general water and fluid lines, our ASTM A139 pipes cover Gr. A to E.
As a carbon steel LSAW pipes supplier, we treat the coating and the paperwork as part of the pipe. 3LPE, 3LPP, FBE, epoxy, and cement mortar lining are all available, and each order carries plate certificates, weld test reports, and hydrostatic test records.
Types of Pipes & Tubes
Explore our range of industrial pipes and tubes, manufactured for different applications, materials, specifications and engineering requirements.
Pipes and Tubes
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Seamless Pipes
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ERW Pipes
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LSAW Pipes
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SSAW Pipes
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Seamless Tubes
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Welded Pipes
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Welded Tubes
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Box Pipes
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Box Tubes
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Brass Pipes
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Heat Exchanger Tubes
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Boiler Tubes
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Aluminium Pipes
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Carbon Steel Seamless Pipes
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Carbon Steel Pipe
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Stainless Steel Pipe
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Alloy Steel Pipe
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Duplex Steel Pipe
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Super Duplex Steel Pipe
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Nickel Alloy Pipe
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Copper Nickel Alloy Pipe
→Get Certified Carbon Steel LSAW Pipes at Competitive Factory Prices
Carbon Steel LSAW Pipes Specification
| Parameter | Details |
|---|---|
| Size Range | 16" to 48" OD (406.4 mm to 1219.2 mm) |
| Wall Thickness | 6 mm to 40 mm |
| Forming Method | JCOE or UOE |
| Welding | Inside and outside submerged arc welding, one longitudinal seam |
| Expansion | Mechanical cold expansion of about 1% |
| Grades | API 5L Gr. B to X80, ASTM A252 Gr. 1 to 3, ASTM A671 / A672 CC60 to CC70, ASTM A139 Gr. A to E |
| Product Levels | PSL1, PSL2 |
| Length | 6 m to 12.2 m, custom lengths on request |
| End Finish | Plain end, bevelled end (30° to 35° with 1.6 mm root face) |
| Coating and Lining | Bare, mill varnish, 3LPE, 3LPP, FBE, liquid epoxy, cement mortar lining |
| Testing | Plate UT, weld UT and radiography, hydrostatic, tensile, guided bend, Charpy, DWTT (PSL2), HIC and SSC (sour service) |
| Certificate | EN 10204 3.1 (3.2 on request) |
Carbon Steel LSAW Pipe Standards and Specifications
| Duty | Standard |
|---|---|
| Line Pipe | API 5L / ISO 3183, PSL1 and PSL2 |
| Piling | ASTM A252 Gr. 1, 2, 3 |
| Pressure Pipe from Plate | ASTM A671, ASTM A672 |
| General Submerged Arc Pipe | ASTM A139 Gr. A to E |
| Indian Standard | IS 3589 |
| Structural Hollow Sections | EN 10219 (S355J2H), IS 4923 |
| Pipeline Design Codes | ASME B31.4, B31.8, B31.3 |
| Dimensions | ASME B36.10M, API 5L |
| Sour Service | NACE MR0175 / ISO 15156, NACE TM0284 (HIC), NACE TM0177 (SSC) |
| External Coating | ISO 21809-1 (3LPE, 3LPP), ISO 21809-2 (FBE) |
| Internal Lining | AWWA C205 (cement mortar) |
| Certificate | EN 10204 3.1 and 3.2 |
Carbon Steel LSAW Pipes Material and Grades
| Duty | Pipe Grades | Typical Plate | Standard |
|---|---|---|---|
| Line Pipe | Gr. B, X42, X46, X52, X56 | Carbon-manganese, normalized | API 5L PSL1 / PSL2 |
| High-Strength Line Pipe | X60, X65, X70, X80 | TMCP, microalloyed | API 5L PSL2 |
| Piling Pipe | Gr. 1, 2, 3 | ASTM A36 or equivalent | ASTM A252 |
| Pressure Pipe | CC60, CC65, CC70 | ASTM A516 Gr. 60, 65, 70 | ASTM A671 |
| Pressure Pipe | C60, C65, C70 | ASTM A516 Gr. 60, 65, 70 | ASTM A672 |
| General Pipe | Gr. A, B, C, D, E | Structural plate | ASTM A139 |
| Structural Pipe | Gr. 50 | ASTM A572 Gr. 50 | ASTM A572 |
| Structural Pipe | S355J2H | EN 10025 S355J2 | EN 10219 |
| Indian Structural Pipe | E250, E350 | IS 2062 | IS 3589, IS 4923 |
What Is the Difference Between Carbon Steel LSAW Pipes and Carbon Steel Seamless Pipes?
The difference comes down to size, seam, and cost. Seamless pipes start as solid billets, and mills cannot pierce billets beyond a certain diameter, so seamless pipe stops near 24 inches. Carbon steel LSAW pipes start as plate, so they reach 48 inches and more, with thick walls. LSAW pipes cost less at large diameters, but they carry one welded seam that the mill must test and the design code must account for.
Choose seamless below 24 inches when steam, high temperature, or the highest pressure sets the design. Choose LSAW when the pipe is large, the wall is thick, and the line runs long.
| Point | Carbon Steel LSAW Pipes | Carbon Steel Seamless Pipes |
|---|---|---|
| Raw Material | Steel plate | Solid billet |
| Seam | One straight seam, 100% tested | None |
| Typical Size | 16" to 48" and larger | 1/8" to 24" |
| Wall Thickness | Up to 40 mm and more | Up to XXS in small sizes |
| Dimensional Control | Set by expansion, very round | Set by rolling |
| Cost at Large Diameter | Lower | Much higher |
| Lead Time | Shorter for large sizes | Longer for large sizes |
| Pressure and Temperature | High, within the weld joint factor | Highest |
| Best For | Long distance pipelines, offshore lines, piling, water mains | Refineries, power plants, high-temperature lines |
Carbon Steel LSAW Pipes Chemical Composition
Chemistry sets strength, toughness, and weldability. Values are weight percent, maximum unless a range shows.
API 5L LSAW Pipes
| Grade | PSL1 C | PSL1 Mn | PSL2 C | PSL2 Si | PSL2 Mn |
|---|---|---|---|---|---|
| B | 0.26 | 1.20 | 0.22 | 0.45 | 1.20 |
| X42 | 0.26 | 1.30 | 0.22 | 0.45 | 1.30 |
| X46 | 0.26 | 1.40 | 0.22 | 0.45 | 1.40 |
| X52 | 0.26 | 1.40 | 0.22 | 0.45 | 1.40 |
| X56 | 0.26 | 1.40 | 0.22 | 0.45 | 1.40 |
| X60 | 0.26 | 1.40 | 0.12 | 0.45 | 1.60 |
| X65 | 0.26 | 1.45 | 0.12 | 0.45 | 1.60 |
| X70 | 0.26 | 1.65 | 0.12 | 0.45 | 1.70 |
| X80 | – | – | 0.12 | 0.45 | 1.85 |
For welded pipe, PSL1 limits P and S at 0.030 each. PSL2 limits P at 0.025 and S at 0.015, caps Nb + V + Ti at 0.15%, and sets carbon equivalent limits of CE(Pcm) 0.25 max when carbon is 0.12% or lower and CE(IIW) 0.43 max when it is higher.
ASTM A252, A139 and Structural Grade LSAW Pipes
| Grade | C | Mn | Si | P | S |
|---|---|---|---|---|---|
| ASTM A252 Gr. 1 / 2 / 3 | – | – | – | 0.050 | – |
| ASTM A139 Gr. A to E | – | – | – | 0.035 | 0.035 |
| ASTM A572 Gr. 50 | 0.23 | 1.35 | 0.40 | 0.040 | 0.050 |
| EN 10219 S355J2H | 0.22 | 1.60 | 0.55 | 0.030 | 0.030 |
ASTM A671 and A672 pipes take their chemistry from the ASTM A516 plate named in the order, so the mill test certificate lists the exact values for each heat.
Carbon Steel LSAW Pipes Mechanical Properties
Mechanical properties show how much load the pipe carries before it stretches (yield) or breaks (tensile). Values are minimum unless a range shows.
| Grade | Tensile Strength ksi (MPa) | Yield Strength ksi (MPa) | Elongation % |
|---|---|---|---|
| API 5L Gr. B | 60.2 (415) | 35.5 (245) | Per API 5L formula |
| API 5L X42 | 60.3 (415) | 42.1 (290) | Per API 5L formula |
| API 5L X46 | 63.1 (435) | 46.4 (320) | Per API 5L formula |
| API 5L X52 | 66.7 (460) | 52.2 (360) | Per API 5L formula |
| API 5L X56 | 71.1 (490) | 56.6 (390) | Per API 5L formula |
| API 5L X60 | 75.4 (520) | 60.2 (415) | Per API 5L formula |
| API 5L X65 | 77.6 (535) | 65.3 (450) | Per API 5L formula |
| API 5L X70 | 82.7 (570) | 70.3 (485) | Per API 5L formula |
| API 5L X80 | 90.6 (625) | 80.5 (555) | Per API 5L formula |
| ASTM A252 Gr. 1 | 50 (345) | 30 (205) | Per ASTM formula |
| ASTM A252 Gr. 2 | 60 (415) | 35 (240) | Per ASTM formula |
| ASTM A252 Gr. 3 | 66 (455) | 45 (310) | Per ASTM formula |
| ASTM A139 Gr. B | 60 (415) | 35 (240) | Per ASTM formula |
| ASTM A139 Gr. E | 66 (455) | 52 (359) | Per ASTM formula |
| ASTM A671 / A672 CC60 | 60–80 (415–550) | 32 (220) | Per plate standard |
| ASTM A671 / A672 CC65 | 65–85 (450–585) | 35 (240) | Per plate standard |
| ASTM A671 / A672 CC70 | 70–90 (485–620) | 38 (260) | Per plate standard |
| ASTM A572 Gr. 50 | 65 (450) | 50 (345) | 21 |
| EN 10219 S355J2H | 68–91 (470–630) | 51.5 (355) | 22 |
Every LSAW pipe also faces a hydrostatic test. The test pressure follows P = 2 × S × t ÷ D, where S is a set fraction of the specified minimum yield strength, t is the wall thickness, and D is the outside diameter. API 5L fixes the fraction for each size and grade.
Carbon Steel LSAW Pipe Size and Weight Chart
Each figure shows weight in kg per metre for a plain steel pipe. LSAW pipes use outside diameter and wall thickness in mm, not schedule numbers.
| NPS | OD mm | 8 mm | 10 mm | 12 mm | 14 mm | 16 mm | 20 mm | 25 mm |
|---|---|---|---|---|---|---|---|---|
| 16" | 406.4 | 78.60 | 97.75 | 116.71 | 135.47 | 154.04 | 190.57 | 235.13 |
| 20" | 508.0 | 98.64 | 122.81 | 146.78 | 170.55 | 194.12 | 240.68 | 297.77 |
| 24" | 609.6 | 118.68 | 147.86 | 176.84 | 205.62 | 234.21 | 290.79 | 360.41 |
| 30" | 762.0 | 148.75 | 185.44 | 221.94 | 258.24 | 294.34 | 365.95 | 454.36 |
| 36" | 914.4 | 178.81 | 223.03 | 267.04 | 310.85 | 354.47 | 441.12 | 548.32 |
| 42" | 1066.8 | 208.88 | 260.61 | 312.14 | 363.47 | 414.60 | 516.28 | 642.27 |
| 48" | 1219.2 | 238.94 | 298.19 | 357.24 | 416.08 | 474.73 | 591.45 | 736.22 |
To work out the weight of any size, use Weight (kg/m) = (OD − Wall) × Wall × 0.02466, with both values in mm. Coating and lining add to the weight, so ask us for the finished weight when you plan shipping.
Available Sizes, Dimensions and Schedules
We make carbon steel LSAW pipes from 16" to 48" OD, in walls from 6 mm to 40 mm. Large pipes are ordered by outside diameter and wall thickness in mm. No schedule numbers apply, and the API 5L table sets the allowed tolerances on diameter, wall, and out-of-roundness. Standard lengths run from 6 m to 12.2 m, and we supply other lengths on request.
As a carbon steel LSAW pipes supplier in India, we hold stock of popular sizes and grades, subject to availability, and we can roll other diameters and walls to order.
| Product | Available Sizes | Wall Thickness | Standard Lengths |
|---|---|---|---|
| API 5L LSAW Pipes | 16" to 48" OD | 6 mm to 40 mm | 6 m to 12.2 m / custom |
| ASTM A252 LSAW Piling Pipes | 16" to 48" OD | 6 mm to 40 mm | 6 m to 12.2 m / custom |
| ASTM A671 / A672 LSAW Pipes | 16" to 48" OD | 6 mm to 40 mm | 6 m to 12.2 m / custom |
| Coated and Lined LSAW Pipes | 16" to 48" OD | 6 mm to 40 mm | 6 m to 12.2 m / custom |
Common Materials Used in Carbon Steel LSAW Pipes
Carbon steel LSAW pipes can be made from different grades of steel, depending on where the pipe will be used. As experienced Carbon Steel LSAW Pipes Suppliers, we help customers select suitable material grades based on pressure, strength, temperature, and service conditions.
API 5L Grades: Pipeline applications commonly use grades from Gr. B to X80. These steels offer the strength and toughness needed for oil, gas, and water transmission.
ASTM A252 Grades: Grades 1, 2, and 3 are widely used for piling and foundation projects where the pipe must withstand heavy loads.
ASTM A516 Grades: Gr. 60, 65, and 70 are commonly selected for pressure piping and industrial applications.
Structural Steel Grades: Materials such as ASTM A36, ASTM A572 Gr. 50, EN 10025 S355J2, and IS 2062 E250/E350 suit structural and engineering projects.
When ordering, specify both the pipe standard and material grade to ensure the mill produces the required specification.
Carbon Steel LSAW Pipes We Manufacture and Supply
We manufacture and supply carbon steel LSAW pipes for pipeline, piling, pressure, structural, and industrial applications. Our range includes API 5L LSAW pipes in PSL1 and PSL2, with grades from B to X80 for different pipeline requirements. We also offer ASTM A252 piling pipes, ASTM A671 and A672 pressure pipes, ASTM A139 pipes, and structural LSAW pipes to EN 10219 and IS 4923 standards. With years of industry experience, we serve customers looking for a reliable Carbon Steel LSAW Pipes Supplier in India.
We also provide pipes with 3LPE, 3LPP, FBE, and epoxy coatings, along with cement mortar lining for specific service conditions. Sour service requirements can include HIC and SSC testing. Depending on the project, we provide test certificates, coating records, pipe markings, and other required inspection documents with each shipment.
Applications of Carbon Steel LSAW Pipes
- Oil and Gas Transmission: Carry crude oil and natural gas over long distances, on land and offshore.
- Water Mains and Penstocks: Move large volumes of water for cities, dams, and hydropower plants.
- Piling and Foundations: Support bridges, jetties, ports, and tall buildings.
- Offshore and Marine Structures: Form jackets, risers, and piles in salt water.
- Power Plants: Serve cooling water and large steam-adjacent lines.
- Refineries and Petrochemical Plants: Handle large process headers and pressure piping.
- Dredging and Slurry Lines: Carry sand, mining tailings, and slurry.
- Heavy Structures: Build columns, tower legs, and large frames.
Why Choose Us as Your Carbon Steel LSAW Pipes Supplier in India?
With 20+ years of experience, we know how to handle different carbon steel LSAW pipe requirements, from standard orders to large project supplies. We can manufacture and supply up to 100 tons per month and offer grades including API 5L Gr. B to X80, ASTM A252, ASTM A671, ASTM A672, and ASTM A139. Pipes can be supplied to relevant ASTM, ASME, API, ANSI, DIN, and ISO standards, with sizes, wall thicknesses, coatings, and testing arranged according to your requirements.
Quality documentation is an important part of every project we handle. We can provide material test certificates, inspection reports, test results, coating records, and other required documents. With experience serving customers in 85+ countries, we understand international specifications, export requirements, and project documentation. This makes us a practical choice for buyers looking for a dependable Carbon Steel LSAW Pipes Supplier in India for regular, bulk, and project-based requirements.
Countries We Export Carbon Steel LSAW Pipes To
We supply carbon steel LSAW pipes to customers across 85+ countries, supporting contractors, distributors, fabricators, and industrial buyers with export packing, shipping protection, inspection, and required documentation. Our experience as Carbon Steel LSAW Pipes Suppliers helps us manage international orders and different project requirements smoothly.
North America: United States, Canada, Mexico
Middle East: UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain
Europe: UK, Germany, France, Italy, Netherlands, Spain
Asia Pacific: Australia, Singapore, Malaysia, Indonesia, Thailand, Vietnam
Africa: South Africa, Egypt, Nigeria, Kenya, Algeria
South America: Brazil, Argentina, Chile, Peru, Colombia
Carbon Steel LSAW Pipes FAQs
Common questions about carbon steel LSAW pipe sizes, grades, testing, coatings, and supply.
Are LSAW and DSAW pipes the same?
Yes. DSAW means double submerged arc welded, and it describes the inside and outside weld passes of an LSAW pipe.
What is the difference between JCOE and UOE?
Both start from plate. JCOE bends the plate in steps and suits many sizes in small batches. UOE forms the plate through U and O presses and suits long runs of one size.
What does cold expansion do?
The mill stretches the welded pipe by about 1% on the inside. This fixes the exact diameter, improves roundness, and relieves stress from forming and welding.
Why choose LSAW instead of seamless pipe for large sizes?
Seamless pipe becomes very costly and hard to source above about 24 inches. LSAW pipe reaches 48 inches and beyond with thick walls at a lower cost.
Which grade should I choose for a gas pipeline?
Pipeline designers commonly choose API 5L PSL2 in X60, X65, or X70, because these grades give high strength with tested toughness. Your design code and operator specification set the final grade.
What is the difference between PSL1 and PSL2?
PSL2 has tighter chemistry, tested toughness, and limits on maximum strength. PSL1 is the standard quality level.
Which coatings can you apply to LSAW pipes?
We apply 3LPE, 3LPP, FBE, and liquid epoxy on the outside and cement mortar or epoxy inside, or supply the pipe bare or varnished.
What sizes do your LSAW pipes come in?
We make carbon steel LSAW pipes from 16" to 48" OD, in walls from 6 mm to 40 mm. Larger sizes and heavier walls are available on request.
What decides the price of carbon steel LSAW pipes?
Plate price, grade, diameter, wall thickness, PSL level, coating, testing scope, quantity, and delivery port all shape the