Yuan Steel offers a comprehensive range of carbon steel welded pipe manufactured to international standards including API 5L and ASTM A53. Whether you need ERW steel pipe for general transmission, LSAW pipe for large-diameter projects, or SSAW pipe for cost-effective long-distance lines, we have the right solution.
Main production routes
ERW Steel Pipe (Electric-Resistance Welded) – ½–24 in OD, wall 1–20 mm, tight tolerances, clean appearance.
LSAW Steel Pipe (Longitudinal Submerged-Arc Welded) – 16–64 in OD, wall 6–40 mm, single or double-sided SAW, thick wall/high integrity.
SSAW / HSAW Steel Pipe (Spiral SAW) – 20–100 in OD, wall 5–25 mm, long coils, economical for long-distance pipelines.
Carbon Steel Welded Pipe Specifications | ||
| Standard | Grades Available | Typical Application |
|---|---|---|
| API 5L (PSL1 / PSL2) | Grade B, X42, X46, X52, X56, X60, X65, X70 | Oil & gas transmission, pipelines |
| ASTM A53 | Grade A, Grade B | Mechanical & pressure applications |
| ASTM A252 | Grade 1, 2, 3 | Piling pipe foundations |
| EN 10217 | S235, S355, P195, P235 | Structural & pressure purposes |
| AS/NZS 1163 | C250, C350, C450 | Structural hollow sections |
Outside Diameter: 21.3mm – 2540mm (½" – 100") depending on process
Wall Thickness: 1.0mm – 60mm (SCH 10 to SCH 160)
Length: 3m – 12m random, fixed, or double random
End Finish: Plain ends, beveled ends (30° for welding), threaded ends with coupling
Surface Coating: Black painted, varnished, FBE, 3LPE, 3LPP, galvanized
Ends design:
1) Bevel the welding ends to an angle of 30°, +5°, -0°, with a root face of 1/16", +/- 1/32". The bevel shall form a V groove with an included angle of 60°+10/-0. The root opening shall be 1/16", +/- 1/32" according to ANSI B16.25.
2) Plain or straight ends.
3) Threaded ends with coupling or without coupling according to API Spec. 5B.
Package:
Black painted or bare surface, hexagonal bundled with steel strips if the pipe diameter is equal or below 323.9mm, loose packing if the pipe diameter larger than 323.9mm.
Shipment:
Land transportation by truck or train, sea transportation by container ship or bulk ship.
Application:
Crude oil Pipelines, Natural Gas Pipelines, Jet Fuel Pipelines, Water and Sewage Pipelines, Mineral Slurry Pipelines, Submarine Pipelines, Onshore and Offshore Pipelines, Line Pipe Pile.
Common Specifications
ASTM A53 (Gr.A/B), API 5L (Gr.B, X42-X80), ASTM A252 (Gr.1/2/3 piling), EN 10217-1 (P195/TR1, P235/TR2), EN 10219 (S235/S355 structural), AS/NZS 1163 (C250/C350), ISO 3183, AWWA C200, etc.
Ends: plain, bevel 30° + 1/16 in root face, threaded & coupled, grooved, swaged, flanged.
Lengths: random 5–12 m, fixed ± 50 mm, double random 11–13 m.
NDT: 100 % weld RT/UT for API PSL-2, hydro-test to 1.5 × design pressure, optional EMI for OD surface.
Product Details of api 5l carbon steel pipe
Pipe End: square ends (straight cut, saw cut, and torch cut). or beveled for welding, beveled
Surface: Lightly oiled, Hot dip galvanized, Electro galvanized, Black, Bare, Varnish coating/Anti rust oil, Protective Coatings (Coal Tar Epoxy, Fusion Bond Epoxy, 3-layers PE)
Packing: Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips, Two tags on each bundle, Wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips, Plastic caps.
Test: Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Bending Test, Hardness Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, NDT TEST ( ET TEST, RT TEST, UT TEST)
Size
Out Diameter: 21.3-660mm
Wall Thickness: 1.0-20mm
Length: 3-12m, or according to customer's requirement
End: Plain End, Beveled End, Treaded
Standard
ASTM 5L, ASTM A53, ASTM A178, ASTM A500/501, ASTM A691, ASTM A252, ASTM A672, EN 10217
Steel Grade:
API 5L: PSL1/PSL2 Gr.A, Gr.B, X42, X46, X52, X56, X60, X65, X70
ASTM A53: GR.A, GR.B, ASTM A500 JIS G3466
EN: S275, S275JR, S355JRH, S355J2H, EN10219-1, EN10217-1
GB: Q195, Q215, Q235, Q345, L175, L210, L245, L320, L360-L555
The api 5l carbon steel pipe manufacturing process is more straightforward and automated than seamless pipe production, resulting in lower costs.
Carbon Steel Welded Pipes are made in a continuous process that allows for fast production speeds, ideal for large projects and high-volume needs.
The thickness of the steel strip used determines the wall thickness, leading to a more uniform and precise result compared to some other pipe types.
api 5l carbon steel pipes have a smooth interior and exterior, which can be beneficial for applications where surface quality is important.
They can have thinner walls than seamless pipes while maintaining good strength, which can lead to lighter and easier-to-handle products.
The continuous manufacturing process results in tight tolerances, ensuring dimensional accuracy.
api 5l carbon steel pipe can be adjusted to produce a wide range of diameters and wall thicknesses, providing flexibility for different applications.
1. Customized Technical Solutions
We offer comprehensive customization including OD, WT, and length adjustments, supplemented with specialized end finishing and anti-corrosion coatings. This technical flexibility makes our line pipe ideal for various project specifications.
2. Rigorous Quality Assurance
Implementing strict quality control from material selection to final inspection, each api 5l carbon steel pipe undergoes multiple NDT tests and required testing, guaranteeing consistent compliance with industry standards and project requirements.
3. Professional Technical Support
Our engineering team provides end-to-end technical services, from product selection to installation guidance, ensuring optimal performance of every Carbon Steel Welded Pipe in your operations.
4. Proven Product Excellence
Our api 5l carbon steel pipe strictly complies with standards, delivering superior strength and pressure capacity while maintaining excellent toughness in low-temperature environments. The enhanced corrosion resistance ensures reliable performance even in demanding service conditions.
5. Optimized Cost Efficiency
Through vertical integration and streamlined supply chain management, we maintain competitive pricing while ensuring product quality, providing clients with superior value line pipe solutions.
Our api 5l welded steel pipes serve critical roles across multiple industries, providing reliable solutions for demanding environments worldwide. As a trusted supplier, we offer a complete range including api 5l carbon steel pipe, High Temperature Carbon Steel Pipe, and specific grades such as carbon steel api 5l grade b and api 5l x52 carbon steel pipe.
Oil & Gas Industry
Api 5l carbon steel pipe is the backbone of hydrocarbon transportation. Our carbon steel api 5l grade b pipes are widely used in low-pressure oil gathering lines and natural gas distribution networks, where cost-effectiveness and reliable weldability are essential. For medium-pressure transmission lines, api 5l x52 carbon steel pipe offers enhanced strength while maintaining excellent field weldability.
Refinery and petrochemical facilities utilize our High Temperature Carbon Steel Pipe for steam lines, hot process fluids, and utility systems operating at elevated temperatures up to 425°C.
Water Infrastructure
Municipal water authorities specify api 5l carbon steel pipe for potable water transmission mains, irrigation systems, and sewage pipelines. The smooth internal surface of our welded pipes minimizes flow friction, reducing pumping costs over decades of service. Carbon steel api 5l grade b is particularly favored for water applications due to its excellent coating adhesion and corrosion protection compatibility.
Power Generation
Power plants rely on High Temperature Carbon Steel Pipe for critical systems including:
Cooling water circulation lines
Steam condensate return systems
Ash handling and slurry transport
Boiler feed water piping
Both api 5l x52 carbon steel pipe and carbon steel api 5l grade b are specified depending on pressure and temperature requirements.
Construction & Structural
In building and infrastructure projects, api 5l carbon steel pipe serves as:
Piling foundations (pipe piles) for bridges and high-rise buildings
Structural supports and columns
Bracing elements in industrial facilities
Scaffolding systems
Api 5l x52 carbon steel pipe offers higher strength-to-weight ratio for heavy-load applications, while carbon steel api 5l grade b provides cost-effective solutions for general structural use.
Industrial Processing
Manufacturing facilities utilize High Temperature Carbon Steel Pipe for:
Compressed air distribution systems
High-pressure process lines
Steam heating systems
Fire protection water mains
Marine & Offshore
Offshore platforms and shipbuilding applications demand the reliability of api 5l carbon steel pipe for:
Platform structural members
Subsea pipeline risers
Ballast and bilge systems
Utility piping
Hainan Yuan Steel Pipe Supply Chain Co.,Ltd is one of the leading Carbon Steel Welded Pipe distributors.
If you want to buy or import best high-quality API 5L Carbon Steel Pipe, please kindly feel free to contact us.
