Products Description
1.Standard & Core Grade Specification:
- Executive Standard: API 5L (Latest Version), ISO 3183, ASME B36.10M
- Product Specification Level: PSL2 (Higher safety, stricter chemical & mechanical requirements than PSL1, suitable for critical pipeline projects)
- Steel Grade: API 5L X70, API 5L X80
- Manufacturing Process: SSAW (Spiral Submerged Arc Welding)
- Anti-Corrosion Coating: FBE Fusion Bonded Epoxy Coating / 3LPE (3-Layer PE) Coating
2.Dimension Specifications:
We support customized sizes to meet diverse project requirements, with standard dimensions as follows:
|
Item |
Specification Range |
|---|---|
|
Outer Diameter (OD) |
508mm – 1422mm (20" – 56") |
|
Wall Thickness (WT) |
6.0mm – 40.0mm (SCH20 – SCH160) |
|
Standard Length |
6m / 12m / 18m (20ft / 40ft / 60ft), Custom fixed length available |
|
End Type |
Plain End / Beveled End (30° standard bevel for welding) |
|
Roundness Tolerance |
≤ 0.5% of outer diameter |
|
Straightness Tolerance |
≤ 1.5mm per meter |
3.Technical Parameters:
|
Grade |
C |
Si |
Mn |
P |
S |
CEV |
|---|---|---|---|---|---|---|
|
X70 PSL2 |
0.22 |
0.45 |
1.65 |
0.025 |
0.015 |
0.43 |
|
X80 PSL2 |
0.18 |
0.45 |
1.90 |
0.025 |
0.015 |
0.45 |
|
Grade |
Yield Strength (MPa) |
Tensile Strength (MPa) |
Elongation (%) |
Impact Test (-20℃) |
|---|---|---|---|---|
|
X70 PSL2 |
485 – 620 |
570 – 760 |
≥ 18 |
Qualified |
|
X80 PSL2 |
555 – 690 |
625 – 825 |
≥ 16 |
Qualified |
4.Coating Technical Parameters :
|
Coating Type |
Coating Structure |
Standard Thickness |
Key Performance |
|---|---|---|---|
|
FBE Coating |
Single-layer fusion bonded epoxy |
300 – 450μm |
High adhesion, excellent chemical resistance, suitable for high-temperature & sour service environments |
|
3LPE Coating |
1.FBE primer + 2.Adhesive layer + 3.PE outer layer |
2.5 – 3.5mm |
Superior abrasion & impact resistance, long service life (30+ years for buried pipelines) |
Application Fields
This series of coated SSAW steel pipes is widely used in heavy-duty industrial transmission and municipal infrastructure projects globally:
- Oil & Gas Transmission: Long-distance crude oil, natural gas, and petroleum product pipeline systems (onshore & offshore)
- Petrochemical Industry: Chemical fluid, medium and low-pressure corrosive liquid transmission pipelines
- Water Conservancy & Municipal Engineering: Large-scale water supply, drainage, and reclaimed water transmission pipelines
- Energy Engineering: Thermal power, wind power supporting pipeline systems, and buried energy pipeline networks
- Mining & Industrial Pipeline: Mine slurry transmission, industrial circulating water and pressure fluid pipelines
- Offshore & Coastal Projects: Anti-corrosion pipelines for coastal and offshore engineering with high salt fog erosion
FAQ
Q1: What is the difference between API 5L PSL1 and PSL2?
PSL2 has stricter chemical composition limits (lower S/P content), mandatory low-temperature impact test, higher tensile/yield strength stability, and stricter dimensional tolerance standards. It is designed for high-risk, high-pressure, and long-distance critical pipeline projects, while PSL1 is for general conventional pipelines.
Q2: Which coating should I choose, FBE or 3LPE?
FBE coating is more suitable for high-temperature medium transmission, sour oil/gas environments and projects requiring high chemical stability. 3LPE coating has better mechanical protection, anti-abrasion and anti-impact performance, ideal for deeply buried pipelines, complex soil conditions and long-term outdoor service.
Q3: What quality tests will be conducted before delivery?
All pipes undergo strict factory tests including: chemical composition analysis, mechanical performance test (tensile, yield, elongation, impact), hydraulic pressure test, 100% ultrasonic weld flaw detection, coating thickness and adhesion test, and dimensional tolerance inspection. Full test reports and certification documents are provided.
Q4: Can you provide customized sizes and lengths?
Yes. We support non-standard outer diameter, wall thickness, fixed cutting length, special end bevel processing, and customized coating colors and thicknesses according to customer project drawings and requirements.
Q5: What is the service life of coated steel pipes?
Under standard buried and conventional environmental conditions, 3LPE coated pipes have a service life of more than 30 years, and FBE coated pipes can stably serve for 25+ years in high-temperature and corrosive working environments with regular maintenance.
Q6: What is your delivery time and packaging?
Standard inventory sizes can be delivered within 7-10 working days; customized production takes 15-25 working days. Pipes are packed with steel strapping, end plastic pipe caps, and waterproof woven bags to prevent deformation, dust and corrosion during transportation.
Our address
Rm1406,14th/F No 208, Hongqi Road, Nankai Dist, Tianjin City ,China
Phone Number(WhatsApp/Wechat)
+8616622033809
alisa@tjshenzhoutong.com
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