3LPE Coating Seamless Pipe Manufacturer in India
3LPE Coating Seamless Pipe Manufacturer in India
Stainless Steel Pipe Manufacturers is a leading 3LPE Coating Seamless Pipe Manufacturer in India, established in 2005, with our facility located near Mumbai and our export office in Mumbai, India. With 20+ years of experience, we manufacture, supply, and export industrial pipes and tubes to customers across 85+ countries. We serve oil & gas, petrochemical, chemical, power, construction, marine, pharmaceutical, and engineering industries.
We supply 3LPE coated seamless pipes in different grades, sizes, wall thicknesses, and specifications based on project requirements. Our products are manufactured and supplied to applicable ASTM, ASME, ANSI, DIN, and ISO standards. Our quality credentials include ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, PED 2014/68/EU, and applicable TÜV approvals. EN 10204 3.1 certification is supplied with every order, while 3.2 certification and third-party inspection can be arranged on request.
What Are 3LPE Coating Seamless Pipes?
3LPE Coating Seamless Pipes are seamless steel pipes protected with a three-layer polyethylene coating system (3LPE) to improve resistance against corrosion, moisture, chemicals, and mechanical damage. The coating is applied to the external surface of the pipe and is commonly used for pipelines installed underground or exposed to demanding environments.
The three layers generally consist of an epoxy primer, an adhesive layer, and an outer polyethylene (PE) layer. The epoxy provides corrosion protection and adhesion, the adhesive bonds the layers together, and the polyethylene outer layer protects the pipe from moisture, impact, abrasion, and handling damage.
3LPE coating can be applied to seamless carbon steel and alloy steel pipes in project-specific grades, sizes, wall thicknesses, and lengths. It is widely used in oil and gas pipelines, water transmission, petrochemical plants, chemical industries, and other infrastructure where long-term external corrosion protection is required.
3LPE Coating Seamless Pipes
High-quality 3LPE Coating Seamless Pipes manufactured for demanding applications across oil & gas, petrochemical, chemical, water transmission, construction and engineering industries. Available in multiple grades, sizes, wall thicknesses and coating specifications.
Types of 3LPE Coating Seamless Pipes
As a 3LPE Coating Seamless Pipes Manufacturer, we supply different types based on the base pipe grade, coating class, size, manufacturing process, and end finish. Common options include:
- API 5L 3LPE Coated Seamless Pipes: Available in Gr B and X42 to X70 grades for oil and gas transmission pipelines.
- ASTM A106 Gr B 3LPE Coated Seamless Pipes: Used for process and plant piping where high-temperature carbon steel pipe is required.
- ASTM A53 Gr B 3LPE Coated Seamless Pipes: Suitable for water, gas, and general-service pipeline applications.
- Normal (N) Coating Pipes: Standard polyethylene coating thickness for regular trench-laid pipelines.
- Strengthened (S) Coating Pipes: Increased PE coating thickness for rocky backfill, road crossings, river crossings, and demanding handling conditions.
- Small-Diameter 3LPE Coated Pipes: Used for gathering, distribution, and other smaller-diameter pipeline systems.
- Medium-Diameter 3LPE Coated Pipes: Commonly used for transmission, process, and infrastructure pipelines.
- Hot-Finished Seamless Base Pipes: Seamless steel pipes used as the base material for external 3LPE coating.
- Bare Cutback Pipes: Coated pipes supplied with uncoated ends to allow field welding and joint preparation.
- Bevelled-End 3LPE Coated Pipes: Pipes supplied with bevelled ends for butt-welding applications.
- Single Random Length Pipes: Supplied in specified random lengths according to project requirements.
- Double Random Length Pipes: Longer random-length sections used where the project specification permits.
API 5L, ASTM A106 and ASTM A53 3LPE Coating Seamless Pipes Manufacturers and Suppliers in India
We manufacture and supply 3LPE Coating Seamless Pipes using different carbon steel base pipe grades selected according to design pressure, service fluid, operating conditions, and the applicable project standard.
- API 5L Gr B, X42, X46, X52, X56, X60, X65 and X70: Line pipe grades for cross-country oil, gas and water transmission pipelines.
- ASTM A106 Gr B: Seamless carbon steel pipe for higher-temperature process, refinery and industrial piping.
- ASTM A53 Gr B: Seamless pipe for water, gas and general-service pipeline applications.
- API 5L PSL1 and PSL2: Product specification levels, with PSL2 having tighter chemical, mechanical and toughness requirements.
- Normal and Strengthened 3LPE Coating: Coating systems selected according to pipe size, service conditions and specified coating class.
- Cutback and Bevelled Ends: Supplied with the required cutback length and bevel preparation for field welding.
These pipes are available in different outside diameters, wall thicknesses, lengths, grades and coating classes according to the required specification and project requirements.
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 3LPE Coating Seamless Pipes at Competitive Factory Prices
3LPE Coating Seamless Pipes Specification
The table sets out the working specification.
| Item | Detail |
|---|---|
| Product | 3LPE Coating Seamless Pipes |
| Base pipe | Seamless carbon steel, hot finished |
| Base pipe standards | API 5L PSL1 and PSL2, ASTM A106 Gr B, ASTM A53 Gr B |
| Coating system | Three layers: epoxy primer, copolymer adhesive, polyethylene topcoat |
| Coating standards | DIN 30670, ISO 21809-1, CSA Z245.21, NFA 49-710 |
| Surface preparation | Abrasive blast cleaning to Sa 2½ (ISO 8501-1) |
| PE thickness | Minimum per DIN 30670 Normal (N) or Strengthened (S), as in the table below |
| Size reference | NPS 2 to 12 in the tables, other sizes on request |
| Length | Single random, double random or cut length |
| Ends | Bare cutback, bevelled to API 5L (30°, +5°/−0°, root face 1.6 ± 0.8 mm) |
| Coating tests | Holiday test, thickness, peel strength, impact, indentation and cathodic disbondment as the standard requires |
| Pipe tests | Chemical analysis, tensile, flattening, hydrostatic test |
| Certificate | EN 10204 3.1 with every order, 3.2 on request |
| Inspection | Third-party inspection on request |
3LPE Coating Seamless Pipes Standards and Specifications
A 3LPE coated pipe is bought to two sets of standards: one for the steel pipe and one for the coating. The table links each one to its job.
| Standard | Scope | Where it applies |
|---|---|---|
| API 5L / ISO 3183 | Line pipe for pipeline transportation systems | Base pipe, grades B to X70 |
| ASTM A106 / ASME SA106 | Seamless carbon steel pipe for high-temperature service | Base pipe, process piping |
| ASTM A53 / ASME SA53 | Pipe, steel, black and hot-dipped, seamless and welded | Base pipe, general lines |
| DIN 30670 | Polyethylene coatings for steel pipes and fittings | Coating thickness and tests |
| ISO 21809-1 | External coatings for buried or submerged pipelines, polyolefin coatings | Coating requirements, 3LPE and 3LPP |
| CSA Z245.21 | External polyethylene coating for pipe | Coating requirements |
| NFA 49-710 | External three-layer polyethylene coating of steel pipes | Coating requirements |
| ISO 21809-3 | Field joint coatings | Coating of weld joints on site |
| ISO 8501-1 | Visual assessment of surface cleanliness | Blast cleaning grade Sa 2½ |
| ISO 15589-1, NACE SP0169 | Cathodic protection and external corrosion control | Works with the coating |
| ASME B31.4, B31.8 | Liquid and gas pipeline design codes | Pipeline design |
| ASME B36.10M | Pipe dimensions and weights | OD and wall reference |
| EN 10204 | Types of inspection documents | 3.1 and 3.2 certificates |
3LPE Coating Seamless Pipes Material and Grades
Pick the base pipe grade by design pressure, wall and project code. The table lists the common grades with their designations and minimum yield strength.
| Grade | Designation | EN 10208-2 equivalent | Minimum yield | Typical use |
|---|---|---|---|---|
| ASTM A53 Gr B | UNS K03005 | — | 240 MPa | Water and general lines |
| ASTM A106 Gr B | UNS K03006 | — | 240 MPa | Process and refinery piping |
| API 5L Gr B | L245 | L245 | 241 MPa | Low-pressure oil, gas and water lines |
| API 5L X42 | L290 | L290 | 290 MPa | Gas and water transmission |
| API 5L X52 | L360 | L360 | 359 MPa | Oil and gas transmission |
| API 5L X60 | L415 | L415 | 414 MPa | High-pressure gas transmission |
| API 5L X65 | L450 | L450 | 448 MPa | High-pressure cross-country lines |
| API 5L X70 | L485 | L485 | 483 MPa | High-pressure, large-scale transmission |
What Is the Difference Between 3LPE Coating Seamless Pipes and FBE Coating Seamless Pipes?
The short answer: FBE is a single thin epoxy layer, while 3LPE adds an adhesive and a thick polyethylene shell on top of an epoxy primer. FBE suits lines that run warmer or sit in soft soil. 3LPE suits buried lines that face rocks, rough handling, wet ground and long design lives.
| Point | 3LPE Coating Seamless Pipes | FBE Coating Seamless Pipes |
|---|---|---|
| Layers | Three: epoxy, adhesive, polyethylene | One: epoxy |
| Coating thickness | About 2 to 3.7 mm or more | About 0.4 to 0.5 mm |
| Impact and abrasion resistance | High | Moderate |
| Moisture barrier | Excellent | Good |
| Soil stress and rocky backfill | Strong performance | Needs care |
| Service temperature | Typically up to about 80 °C, depending on PE grade | Higher, around 100 °C or more |
| Cost | Higher | Lower |
| Common standards | DIN 30670, ISO 21809-1, CSA Z245.21 | ISO 21809-2, CSA Z245.20 |
| Typical use | Buried and HDD pipelines, road and river crossings | Hot lines, pipelines in soft soil, internal and external coating |
3LPE Coating Seamless Pipes Chemical Composition
The steel base pipe fixes the strength and weldability. The table gives the limits for seamless pipe, with one element per row. Values are percentage by weight, maximum unless marked "min". API 5L values are for PSL1; PSL2 limits are tighter, and your EN 10204 3.1 certificate shows the actual heat analysis.
| Element | ASTM A106 Gr B | ASTM A53 Gr B | API 5L Gr B | API 5L X42 | API 5L X52 | API 5L X60, X65, X70 |
|---|---|---|---|---|---|---|
| Carbon (C) | 0.30 | 0.30 | 0.28 | 0.28 | 0.28 | 0.28 |
| Manganese (Mn) | 0.29–1.06 | 1.20 | 1.20 | 1.30 | 1.40 | 1.40 |
| Phosphorus (P) | 0.035 | 0.05 | 0.030 | 0.030 | 0.030 | 0.030 |
| Sulphur (S) | 0.035 | 0.045 | 0.030 | 0.030 | 0.030 | 0.030 |
| Silicon (Si) | 0.10 min | — | — | — | — | — |
| Chromium (Cr) | 0.40 | 0.40 | — | — | — | — |
| Copper (Cu) | 0.40 | 0.40 | — | — | — | — |
| Molybdenum (Mo) | 0.15 | 0.15 | — | — | — | — |
| Nickel (Ni) | 0.40 | 0.40 | — | — | — | — |
| Vanadium (V) | 0.08 | 0.08 | — | — | — | — |
3LPE Coating Seamless Pipes Mechanical Properties
Mechanical properties come from the base steel pipe, and the coating does not change them. The table gives minimum values, with one property per row.
| Property | A106 Gr B | A53 Gr B | API 5L Gr B | API 5L X42 | API 5L X52 | API 5L X60 | API 5L X65 | API 5L X70 |
|---|---|---|---|---|---|---|---|---|
| Yield strength, MPa (ksi) | 240 (35) | 240 (35) | 241 (35) | 290 (42) | 359 (52) | 414 (60) | 448 (65) | 483 (70) |
| Tensile strength, MPa (ksi) | 415 (60) | 415 (60) | 414 (60) | 414 (60) | 455 (66) | 517 (75) | 531 (77) | 565 (82) |
3LPE Coating Seamless Pipes Size and Weight Chart
Weight depends on OD and wall thickness. Carbon steel has a density of about 7.85 g/cm³, so we use this formula for the bare steel pipe:
OD and wall are in mm. Example: NPS 6 STD is (168.3 − 7.11) × 7.11 × 0.02466 = 28.26 kg/m. Multiply by length for total weight. The coating adds a small extra that depends on the PE thickness.
| NPS | OD (mm) | STD wall (mm) | STD weight (kg/m) | XS wall (mm) | XS weight (kg/m) |
|---|---|---|---|---|---|
| 2" | 60.3 | 3.91 | 5.44 | 5.54 | 7.48 |
| 3" | 88.9 | 5.49 | 11.29 | 7.62 | 15.27 |
| 4" | 114.3 | 6.02 | 16.07 | 8.56 | 22.32 |
| 6" | 168.3 | 7.11 | 28.26 | 10.97 | 42.56 |
| 8" | 219.1 | 8.18 | 42.55 | 12.70 | 64.64 |
| 10" | 273.1 | 9.27 | 60.31 | 12.70 | 81.55 |
| 12" | 323.9 | 9.53 | 73.88 | 12.70 | 97.46 |
Available Sizes, Dimensions and Schedules
3LPE Coating Seamless Pipes follow ASME B36.10M for OD and wall, and API 5L for line pipe tolerances. Walls are given as standard (STD) and extra strong (XS), and other schedules and walls can be quoted on request. The PE thickness is set by the nominal diameter (DN) and the coating class. The Normal (N) class suits regular trenching, and the Strengthened (S) class suits rocky ground, crossings and rough handling.
| NPS | DN | OD (mm) | STD wall (mm) | XS wall (mm) | Min PE thickness, Normal (mm) | Min PE thickness, Strengthened (mm) |
|---|---|---|---|---|---|---|
| 2" | 50 | 60.3 | 3.91 | 5.54 | 1.8 | 2.5 |
| 3" | 80 | 88.9 | 5.49 | 7.62 | 1.8 | 2.5 |
| 4" | 100 | 114.3 | 6.02 | 8.56 | 1.8 | 2.5 |
| 6" | 150 | 168.3 | 7.11 | 10.97 | 2.0 | 2.7 |
| 8" | 200 | 219.1 | 8.18 | 12.70 | 2.0 | 2.7 |
| 10" | 250 | 273.1 | 9.27 | 12.70 | 2.0 | 2.7 |
| 12" | 300 | 323.9 | 9.53 | 12.70 | 2.2 | 2.9 |
Coating thickness is checked against DIN 30670 or the standard you specify. Bare cutback ends are kept clear for welding, at the length stated in your order.
Common Materials in 3LPE Coating Seamless Pipes
We manufacture and supply the commonly specified materials used in 3LPE Coating Seamless Pipes, with the steel grade and coating system selected according to pressure, soil conditions and project code.
API 5L Gr B to X70 steel: The standard line pipe base, with yield strength from 241 to 483 MPa.
ASTM A106 Gr B steel: Seamless carbon steel pipe for higher-temperature process lines.
ASTM A53 Gr B steel: Seamless pipe for water, gas and general lines.
Fusion bonded epoxy primer: The first layer, sprayed on the heated steel, for adhesion and corrosion resistance.
Copolymer adhesive: The middle layer that bonds the epoxy to the polyethylene.
Polyethylene topcoat: The outer layer, supplied in the thickness set by the coating class.
These materials form part of our supply range as 3LPE Coating Seamless Pipe Suppliers, with different sizes, walls and coating classes available according to the required specification.
3LPE Coating Seamless Pipes We Manufacture and Supply
We supply 3LPE Coating Seamless Pipes for the pipeline jobs below. The base pipe grade and coating class follow the service and the ground conditions.
| Service | Typical base pipe | Typical coating class |
|---|---|---|
| Cross-country crude oil and product lines | API 5L X52 to X65 | Normal or Strengthened |
| Natural gas transmission and distribution | API 5L X42 to X70 | Normal or Strengthened |
| Water transmission and raw water mains | API 5L Gr B, ASTM A53 Gr B | Normal |
| Road, rail and river crossings | API 5L X52 to X65 | Strengthened |
| Horizontal directional drilling (HDD) | API 5L X52 to X70 | Strengthened |
| Refinery and plant underground piping | ASTM A106 Gr B, API 5L Gr B | Normal |
Applications of 3LPE Coating Seamless Pipes
- Oil pipelines: Buried crude oil gathering and transmission lines.
- Gas pipelines: High-pressure transmission and city gas distribution.
- Water supply: Raw water and treated water mains.
- Petrochemical plants: Underground process and utility piping.
- Refineries: Buried fire water and process lines.
- Fertiliser plants: Underground ammonia, water and utility lines.
- Pipeline crossings: Road, rail and river crossings and HDD installations.
- Sewage and effluent: Pressure mains in aggressive soil.
- Power plants: Buried cooling water and fuel lines.
- Industrial parks: Buried gas and water networks.
Why Choose Us as Your 3LPE Coating Seamless Pipe Manufacturer in India?
We have been working in the pipes and tubes industry since 2005, giving us 20+ years of experience in carbon steel line pipe and pipeline requirements. Our facility near Mumbai supports the manufacturing and supply of API 5L, ASTM A106, and ASTM A53 seamless pipes in different outside diameters, wall thicknesses, lengths, and grades, with 3LPE coating according to the required specification. Popular sizes may also be available from ready stock, subject to availability. This experience supports our role as a dependable 3LPE Coating Seamless Pipe Supplier in India for oil & gas, water, petrochemical, and industrial pipeline projects.
Our quality and documentation systems support both domestic and international orders. EN 10204 3.1 certification is supplied with every order, while 3.2 certification and third-party inspection can be arranged on request. We hold ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018 certifications, along with PED 2014/68/EU and TÜV approvals. With an export office in Mumbai and supply to 85+ countries, we also coordinate export packing, shipping documentation, and shipment requirements for coated pipe orders.
Countries We Export 3LPE Coating Seamless Pipes To
We are 3LPE Coating Seamless Pipe Suppliers serving customers across 85+ countries, with export orders for oil, gas, water, petrochemical, and process pipeline projects. We handle international specifications and coordinate material certification, inspection, export packing, and shipping documentation according to the requirements of each order and destination.
Middle East: UAE, Saudi Arabia, Qatar, Oman, Kuwait and Bahrain
Europe: Germany, Italy, United Kingdom, Netherlands, France, Spain and Belgium
Asia-Pacific: Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan and Australia
North and South America: USA, Canada, Mexico and Brazil
Africa: South Africa, Nigeria, Egypt and Kenya
For international orders, EN 10204 3.1 certification is supplied with every order. EN 10204 3.2 certification and third-party inspection can be arranged when specified. Export packing and shipping documentation are prepared according to the project and destination, supporting the supply of 3LPE coated seamless pipes from India to international pipeline locations.
3LPE Coating Seamless Pipes FAQs
Common questions about 3LPE coated seamless pipe base grades, coating thickness, field joints, cathodic protection, and supply.
Which base pipe standard should I choose?
Choose API 5L for cross-country oil, gas and water pipelines, and ASTM A106 Gr B for higher-temperature process and refinery lines. ASTM A53 Gr B suits lower-pressure water and general lines. State PSL1 or PSL2 when you order API 5L.
How thick is the polyethylene layer?
It depends on the nominal diameter and the coating class. Under DIN 30670, the Normal class runs from 1.8 mm on small sizes up to 3.0 mm above DN 800, and the Strengthened class runs from 2.5 mm up to 3.7 mm. The tables above show the values for common sizes.
When should I choose a Strengthened coating?
Choose Strengthened (S) for rocky backfill, road and river crossings, HDD installations and rough handling or storage. Normal (N) is enough for regular trench-laid lines in good soil.
What temperature range does 3LPE cover?
Standard 3LPE suits buried service up to about 80 °C, depending on the PE grade and the standard. For hotter lines, ask your designer to compare 3LPP or FBE systems.
How is the pipe prepared and coated?
The pipe is blast cleaned to Sa 2½ and heated. The epoxy primer is applied first, then the copolymer adhesive and the polyethylene, and the coated pipe is cooled and inspected. Bare cutback ends are left clear for welding.
How do I coat the field joints?
Field joints are normally covered with heat-shrink sleeves or a compatible system under ISO 21809-3, after the girth weld is made and cleaned. Match the sleeve system to the pipe coating and the operating temperature.
Can the pipes be used with cathodic protection?
Yes. 3LPE is designed to work with cathodic protection under ISO 15589-1 or NACE SP0169. The coating carries most of the load, and the cathodic protection system covers small coating defects.
What sizes and walls can I order?
The tables above cover NPS 2 to 12 in standard and extra-strong walls. Other sizes, walls and lengths can be quoted on request, and popular sizes sit in ready stock, subject to availability.
How do I calculate the weight of an order?
Use Weight (kg/m) = (OD − Wall) × Wall × 0.02466 for the bare steel pipe, with OD and wall in mm. Multiply by length and quantity. The coating adds a small extra, and real weight varies slightly with wall tolerance.
Are you a manufacturer or a supplier of 3LPE Coating Seamless Pipes?
We are both. We manufacture near Mumbai and supply ready stock of popular sizes from the same location, subject to availability.