Tianjin Brisk Steel is one of the manufacturers of EN Standard LSAW Steel Pipe in China. Our products are mainly exported to the Middle East, Southeast Asia, Europe, New Zealand, and other regions.If you would like to learn more about our products, feel free to contact us and send your purchase list.
PRODUCT
Tianjin Brisk Steel focus on produce and supply hollow section and steel pipe
Manufacturing Process
- LSAW = Longitudinal Submerged Arc Welded Pipe Produced via JCOE / UOE forming + double-sided submerged arc welding with heavy steel plates, single straight weld line, large diameter & thick wall, high structural safety & pressure resistance.
JCOE Production Process
UOE Production Process
Two Core EN standards for LSAW pipes
| EN Standard | Application Scope | Main Steel Grades |
|---|---|---|
| EN 10219 | Building structure, bridge piling, support frame, bus station steel frame (non-pressure structural use) | S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355K2H |
| EN 10217 | Pressure pipelines: oil/gas, water delivery, industrial fluid transportation (compliant with EU PED pressure equipment directive) | Equivalent pressure grades matching structural S series |
EN 10219 vs EN 10217 for LSAW Pipes
Core Definition
- EN 10219：Cold formed welded structural hollow sections, For static structural load only, no internal working pressure inside pipe body
- EN 10217：Welded steel tubes for pressure service, Designed to bear internal fluid pressure, complies with EU PED 2014/68/EU pressure equipment regulation (mandatory for Europe pressure piping projects)
Core Application Scenarios (LSAW Pipe)
EN 10219 (S-series grades: S275J0H, S355J2H)
- Bus station steel frames, bridge foundation piles, building columns & trusses
- Offshore structure bracings, solar support structures, outdoor steel trestles
- Pipes work as solid bearing members; the hollow cavity is empty / no pressurized medium inside
EN 10217 (P-series grades: P235TR2, P265NL for LSAW → EN 10217-6)
- Pressurized pipelines: natural gas, crude oil, municipal pressurized water, thermal steam pipes
- Industrial pressurized fluid conveyance, fire fighting pressurized piping
- Pipe inner space transports liquid/gas with continuous operating pressure
Steel Grade System
| Standard | Grade Prefix | Typical LSAW Grades | Design Focus |
|---|---|---|---|
| EN 10219 | S = Structural | S275J2H, S355J0H, S355K2H | Yield strength for external load bearing |
| EN 10217 | P = Pressure | P235TR1/TR2, P265NL (EN10217-6 for LSAW low temp) | Anti-pressure burst, tightness & weld integrity under internal pressure |
Mandatory Testing Items (Biggest Difference)
EN 10219 Structural LSAW
- Tensile test, Charpy impact test
- Weld bend test, visual inspection + routine weld UT
- NO mandatory hydrostatic leak test (no pressure requirement)
- NDT scope & sampling frequency are relatively loose
EN 10217 Pressure LSAW
- 100% mandatory hydrostatic test on every single pipe to verify pressure tightness
- Strict full weld UT / RT radiographic inspection for all LSAW longitudinal welds
- Mandatory weld tensile + weld bend + Charpy impact
- Two test grades TR1 (general pressure) / TR2 (critical pressure pipelines) with stricter sampling rules
- All test records must meet PED audit requirements for EU customs clearance
Surface & Anti-corrosion
- Both support black varnish, hot dip galvanizing, 3LPE/FBE coating
- EN10219 coating: mainly anti-rust for outdoor structure
- EN10217 coating: anti-corrosion to prevent medium leakage & pipe wall thinning under long-term fluid pressure
Quick Selection Rule for Your Customers
- Use EN 10219 LSAW → Pile, building frame, bus station structure, support piling
- Use EN 10217 LSAW (Part 6) → Gas/water/oil pressurized transmission pipelines
Pipe Applicable
FAQ
Q: Which projects require EN 10217 certified LSAW pipe?
A: EN 10217 (Part 6 for LSAW) is mandatory for natural gas pipelines, pressurized water supply pipes, crude oil conveying pipelines, thermal power circulating pipes and fire pressure piping. It must pass PED certification for legal use within European markets.
Q: When should I choose EN 10219 LSAW pipe?
A: Pick EN 10219 for bus station frames, bridge piles, building load-bearing columns, steel supports, offshore bracings and other hollow structural components with empty inner cavity, no gas/water pressure delivery inside pipes. Common grades: S275J2H, S355J2H.
Q: Do both standards require hydrostatic testing for LSAW pipes?
A: EN 10219 does not require mandatory hydrostatic test. EN 10217 demands 100% hydrostatic test for every finished pipe together with full weld UT/RT inspection to avoid leakage under working pressure.
Q: Can Brisk Steel produce dual-certified LSAW pipes complying with both EN 10219 and EN 10217?
A: Yes. We can customize dual-standard LSAW pipes according to your project demands, applicable for integrated projects combining structural support and fluid conveying. MOQ for customized production is 25 tons.
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