API 5L X52 Or L360 SAW Welded Steel Pipe Specifications
L360 SAW welded steel pipe is a specific specification of API 5L pipeline steel pipe. The strength mark "L360" matches the strict standard. It is divided into spiral and straight seam types. API 5L L360 LSAW welded pipe is made by submerged arc welding. The steel plate is curled. With the help of flux, the welding wire and the edge of the steel plate are melted and combined. The weld is reliable and meets the engineering strength and sealing requirements. API 5L L360 SSAW steel pipe butts the strip head and tail, controls the weld gap, adjusts the bare tube forming diameter, ensures that the pipe diameter and misalignment meet the requirements, and is welded by automatic double-wire double-sided submerged arc welding process.
The material of API 5L L360 welded pipeline pipe contains necessary chemical elements, such as cobalt, silicon, manganese, vanadium, niobium and titanium to ensure physical properties, and phosphorus and sulfur impurities are strictly controlled to ensure material stability. API 5L L360 high-strength steel pipe has good strength and toughness, with yield strength generally between 360MPa and 510MPa, tensile strength ≥460MPa, elongation ≥20%, and impact energy ≥40J at -20 degrees. These performance indicators enable API 5L L360 SAW steel pipe to withstand certain pressure and external force, and is suitable for a variety of transportation and structural applications.
The welding outer diameter of API 5L L360 pipes spans from 108mm to over 1420mm, and the wall thickness ranges from 3mm to 50mm. The dimensional accuracy strictly adheres to the standard and has a wide range of applicability. It is mainly used in the oil and gas industry and urban gas distribution, including long-distance oil and gas transmission trunk lines, urban gas supply pipelines, and gathering pipelines within oil and gas fields. API 5L L360 oil and gas pipelines can meet the requirements of high pressure and corrosion resistance during oil and gas transportation.
API 5L L360 Specification Chart
| API 5L L360m Psl2 Specification | |
|---|---|
| API 5L Grade L360 Lsaw Pipe Standard | API 5L Grade B |
| API 5L L360 Pipe Spec Level | API 5L Product Specification Level 2 API 5L Product Specification Level 1 |
| CS API 5L L360 Material Sizes | Np Size 1/2" to Sizes 48 upto Other Daimeter. WT - Sch 10 to 160, XS, STD, XXS. |
| API 5L Grade L360N Pipe Service |
Sand Blasting ARO Tar Epoxy Annealed Galvanizing 3LPE Machining etc. Bending Heat Treatment |
| Carbon Steel API 5L L360 Seamless Pipes Type | ERW /Seamless / Fabricated / Welded / CDW |
| X52/l360 Psl 2 En 10225 S355 G15 Norsok Y22 Applications | Petrochemicals, Oil Refineries, Pressure Vessels, Power Generation, Sugar, Steel, Boiler Equipments |
| API 5L L360 Sch 80 Test Methods |
Hydrostatic test Flattening test DWT test for PSL2 pipe CVN impact test for PSL2 pipe (including pipe body tests, pipe weld and HAZ tests) Guided-bend test Bend test |
| Carbon Steel API 5L L360 Length | Double Random, Single Random, Any Sizes - 12 Meters |
| API 5L L360N Psl2 End | Screwed, Bevel, Plain, Threaded |
| L360 Pipe Thickness | Schedule 40, 80, 160, XS, XXS |
API 5L L360 Seamless Pipe Chemical Composition
| PSL 1 Chemical Requirements | ||||||||
|---|---|---|---|---|---|---|---|---|
| Grade | Composition, % | |||||||
| C max | Mn max | P | S max | V max | Nb max | Ti max | ||
| min | max | |||||||
| X52 | 0.28 | 1.4 | – | 0.03 | 0.03 | d | d | d |
| PSL 2 Chemical Requirements | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Grade | Composition, % | ||||||||
| C | Si | Mn | P | S | V | Nb | Ti | Other | |
| X52N | 0.24 | 0.45 | 1.4 | 0.025 | 0.015 | 0.1 | 0.1 | 0.04 | d,e,l |
| X52Q | 0.18 | 0.45 | 1.5 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | e,l |
Mechanical Properties for API 5L X52 PSL-1 Pipe
| Pipe Grade | Tensile Properties – Pipe Body of SMLS and Welded Pipes PSL 1 | Seam of Welded Pipe | ||
|---|---|---|---|---|
| Yield Strength a | Tensile Strength a | Elongation | Tensile Strength b | |
| Rt0,5 PSI Min | Rm PSI Min | (in 2in Af % min) | Rm PSI Min | |
| X52 | 52,200 | 66,700 | c | 66,700 |
Mechanical Properties for API 5L X52 PSL-2 Pipe
| Pipe Grade | Tensile Properties – Pipe Body of SMLS and Welded Pipes PSL 2 | Seam of Welded Pipe | |||||
|---|---|---|---|---|---|---|---|
| Yield Strength a | Tensile Strength a | Ratio a, c | Elongation | Tensile Strength d | |||
| Rt0,5 PSI Min | Rm PSI Min | R10,5IRm | (in 2in) | Rm (psi) | |||
| Af % | |||||||
| Minimum | Maximum | Minimum | Maximum | Maximum | Minimum | Minimum | |
| X52N, X52Q, X52M | 52,200 | 76,900 | 66,700 | 110,200 | 0.93 | f | 66,700 |
CS API 5L X52 Erw Pipe Tolerance
| Pipe Outside Diameter (in.) |
Wall Thickness Chart of Pipe (in) | |||||||
|---|---|---|---|---|---|---|---|---|
| .028 | .035 | .049 | .065 | .083 | .095 | .109 | .120 | |
| Working Pressure Chart(psig) | ||||||||
| 1/8 | 7900 | 10100 | ||||||
| 1/4 | 3700 | 4800 | 7000 | 9500 | ||||
| 5/16 | 3700 | 5400 | 7300 | |||||
| 3/8 | 3100 | 4400 | 6100 | |||||
| 1/2 | 2300 | 3200 | 4400 | |||||
| 3/4 | 2200 | 3000 | 4000 | 4600 | ||||
| 1 | 2200 | 2900 | 3400 | 3900 | 4300 | |||
Carbon Steel API 5L X52 Erw Pipe Tolerance
| API 5L Grade X52 Pipe types | API 5L X52m Pipe Size (milimeter) | Tolerances Chart | |
|---|---|---|---|
| HR API 5L X52 Pipe | OD | <50 | ±0.50mm |
| ≥50 | ±1% | ||
| WT | <4 | ±12.5% | |
| ≥4～20 | +15%, -12.5% | ||
| >20 | ±12.5% | ||
| Cold drawn API 5L X52 Seamless Pipe | OD | 6～10 | ±0.20mm |
| 10～30 | ±0.40mm | ||
| 30～50 | ±0.45 | ||
| >50 | ±1% | ||
| WT | <1 | ±0.15mm | |
| >1～3 | + 15%, - 10% | ||
| >3 | + 12.5%, - 10% | ||
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