EN 10217-1 P195TR1 is a standard and well-established material specification for manufacturing Spiral Submerged Arc Welded (SSAW) steel pipes , , . This combination is a common product offered by numerous manufacturers for low-pressure fluid transmission and general pressure applications where the lowest strength grade of the EN 10217-1 specification is sufficient , .
The designation "EN 10217-1 P195TR1 Spiral Submerged Arc Pipe" combines the entry-level strength grade of the EN 10217-1 pressure pipe standard with the spiral welding process for large-diameter, cost-effective piping solutions , .
📋 Key Specifications for EN 10217-1 P195TR1 SSAW Pipe
The table below summarizes the primary specifications for this product, based on comprehensive industry data , , , , , , , .
| Attribute | Description |
|---|---|
| Standard | EN 10217-1: "Welded steel tubes for pressure purposes - Part 1: Non-alloy steel tubes with specified room temperature properties" , , . |
| Steel Grade | P195TR1: The lowest strength grade in the EN 10217-1 specification. "P" indicates pressure purpose, "195" indicates minimum yield strength in MPa, and "TR1" denotes Transportation Fluid Category 1 with non-specific inspection requirements , . |
| Material Number | 1.0107 . |
| Manufacturing Process | Spiral Submerged Arc Welding (SSAW/HSAW/SAWH) : Formed from hot-rolled steel coil, with the weld seam running continuously in a spiral along the pipe's length. Welded using double-sided automatic submerged arc welding , , , . |
| Chemical Composition (max %) , , | Carbon (C): 0.13% max Manganese (Mn): 0.70% max Silicon (Si): 0.35% max Phosphorus (P): 0.025% max Sulfur (S): 0.020% max Cr+Cu+Mo+Ni: 0.70% max total residual elements |
| Mechanical Properties (min) , , , | Yield Strength (t ≤ 16mm): 195 MPa Yield Strength (t > 16mm to 40mm): 185 MPa Tensile Strength: 320-440 MPa Elongation (longitudinal): ≥ 27% Elongation (transverse): ≥ 25% |
| Typical Size Range , , , , , | Outside Diameter: 10.2 mm to 2540 mm (approx. 1/8" to 100") for EN 10217-1; SSAW typically 168.3 mm to 4064 mm (approx. 6" to 160") , , , Wall Thickness: 0.5 mm to 40 mm (common range for SSAW: 3.2-25 mm) , , , Length: 1.5 m to 18 m standard; up to 25 m available , |
| Key Testing Requirements , , , , | Tensile Test: Per heat batch Bend Test: 180° bend test for wall thickness ≤ 10mm Hydrostatic Test: 100% of pipes; ≥ 1.5 × design pressure for ≥ 10 seconds NDT of Weld: 100% of weld length (ultrasonic or radiographic) , Flattening Test: Optional/on request Visual Inspection: 100% of pipes , |
| Common Applications , , , | Low-pressure water distribution; compressed air systems; HVAC systems; fire protection systems; industrial process water; non-critical pressure applications; general engineering purposes at ambient temperatures. |
| Certification | Mill Test Certificate typically to EN 10204 Type 3.1 or equivalent, with full test results and traceability records , . |
📊 EN 10217-1 Grade Comparison
P195TR1 is the entry-level strength grade in the EN 10217-1 specification. The table below shows its position relative to other common grades , , , , :
| Grade | Minimum Yield Strength (MPa) | Tensile Strength (MPa) | Relative Strength vs. P195 | Key Feature | Typical Application |
|---|---|---|---|---|---|
| P195TR1 | 195 | 320-440 | Baseline | Lowest cost, good ductility | Low-pressure water, air, steam , |
| P235TR1 | 235 | 360-500 | +21% | Medium strength | General pressure systems , |
| P265TR1 | 265 | 410-570 | +36% | Higher strength | Higher-pressure applications , |
| P195TR2 | 195 | 320-440 | +0% | With impact testing | PED-compliant applications , |
📏 Dimensional Specifications
EN 10217-1 specifies the following typical tolerances for SSAW pipes , :
| Parameter | Tolerance |
|---|---|
| Outside Diameter (D ≤ 219.1mm) | ±1% or ±0.5mm (whichever is smaller) |
| Outside Diameter (D > 219.1mm) | ±1% or ±5mm (whichever is smaller) |
| Wall Thickness (T ≤ 5mm) | ±0.5mm (typical) |
| Wall Thickness (5 < T ≤ 10mm) | ±0.1T (typical) |
| Wall Thickness (10 < T ≤ 40mm) | ±1.5mm (typical) |
| Out-of-Roundness | ≤ 1.5% of nominal diameter |
| Length (L > 6m) | +100mm / -0mm |
Standard Diameter Range for SSAW: 168.3mm to 4064mm (6" to 160") , , , ,
🔍 Key Points to Understand
What "EN 10217-1 P195TR1" Means: This is the European standard for welded pressure pipes with room temperature properties. P195TR1 is the entry-level strength grade, with minimum yield strength of 195 MPa. The "P" indicates pressure purpose, "195" is the minimum yield strength in MPa, and "TR1" denotes Transportation Fluid Category 1 – for fluids with low hazard potential (water, air, steam, gases) at temperatures ≤ 120°C , .
TR1 vs. TR2 Quality Levels:
TR1: Basic quality level without specified aluminum content, without mandatory impact testing, and with non-specific inspection requirements , ,
TR2: Enhanced quality level with specified aluminum content, mandatory impact testing, and specific inspection requirements; intended to support PED requirements ,
P195TR1 vs. Higher Grades: P195TR1 offers the lowest strength among EN 10217-1 grades, making it the most economical choice for applications where higher strength is not required. It is approximately 17% lower yield strength than P235 and 36% lower than P265 , .
SSAW Advantages for P195TR1: The spiral welding process offers specific benefits for large-diameter, cost-effective pipes , , :
Large Diameter Capability: Can economically produce pipes up to 160" diameter
Cost Efficiency: Lower cost than longitudinal welding for large diameters
Long Lengths: Up to 25m lengths reduce field joints
Material Efficiency: Can use narrower steel strips to produce large-diameter pipes
🔧 Manufacturing Process for EN 10217-1 P195TR1 SSAW Pipe
The manufacturing process follows standard SSAW production methods with quality controls suitable for pressure applications , , , :
| Step | Description |
|---|---|
| 1. Raw Material Preparation | Hot-rolled steel coils meeting P195TR1 chemistry requirements (continuous cast, fully killed steel) are leveled, inspected, and edge-milled , . |
| 2. Spiral Forming | The steel strip is continuously formed into a cylindrical shape at a specific helix angle at room temperature (cold formed) , . |
| 3. Submerged Arc Welding | Double-sided automatic submerged arc welding (inside and outside) creates the spiral seam with full penetration , , . |
| 4. Non-Destructive Testing | 100% ultrasonic or radiographic inspection of the weld seam is mandatory , . |
| 5. Hydrostatic Testing | Each pipe individually tested to verify pressure integrity (≥ 1.5 × design pressure, ≥ 10 seconds) . |
| 6. Mechanical Testing | Tensile tests, bend tests, and flattening tests (optional) to verify properties , . |
| 7. End Finishing | Ends prepared (plain or beveled) for field welding; beveled ends for wall thickness > 4mm , . |
| 8. Coating | Optional external coatings (varnish, black, oiling, hot dip galvanizing) available , . |
🏭 Applications
EN 10217-1 P195TR1 SSAW pipes are used in low-pressure, non-critical applications , , , :
| Application | Description | Why P195TR1 is Chosen |
|---|---|---|
| Water Distribution | Municipal water supply, irrigation systems, drainage | Economical choice for ambient temperature service |
| Compressed Air Systems | Industrial compressed air lines | Good weldability, low CEV (≤ 0.35) |
| HVAC Systems | Heating and cooling water circuits | Excellent for non-corrosive fluids |
| Fire Protection Systems | Wet/dry sprinkler systems | Adequate pressure rating for fire mains |
| Industrial Process Water | Non-corrosive fluid handling | Cost-effective solution |
| General Engineering | Non-critical structural applications | Good ductility for forming |
📝 Important Considerations
PED Compliance: TR1 quality does not support the essential requirements of EU Directive 2014/68/EU for pressure equipment. For PED-compliant applications, specify P195TR2 instead , .
Temperature Range: P195TR1 is limited to -10°C to +120°C for TR1 category. For lower temperature service, consider higher grades or TR2 quality .
Weldability: P195TR1 has excellent weldability with low carbon equivalent (CEV ≤ 0.35), making it easy to fabricate with minimal preheat requirements .
International Equivalents: P195TR1 is roughly equivalent to :
ASTM A53 Grade A (205 MPa yield)
JIS G 3454 STPG370
ISO 9330-1 TW320
Design Pressure: Allowable stress is calculated as S = ReH / 1.5 = 130 MPa (minimum). Actual design pressure depends on wall thickness and diameter .
Complete Specification: When ordering, specify , , , :
EN 10217-1, Grade P195TR1, SSAW (spiral welded), Size (OD x WT), Length, End Finish
Standard version: [e.g., EN 10217-1:2019]
Coating requirements: [e.g., bare, varnish, galvanized]
Any supplementary requirements (e.g., +U for ultrasonic testing of parent material)
📝 Summary
EN 10217-1 P195TR1 Spiral Submerged Arc Welded pipes are a standard, cost-effective choice for low-pressure fluid transmission and general engineering applications under the European pressure pipe standard , , , . With minimum yield strength of 195 MPa, these pipes offer an economical solution for water distribution, compressed air systems, HVAC, and other non-critical pressure applications where higher strength grades would be over-specified .
The TR1 quality level provides basic inspection requirements suitable for low-hazard fluids at temperatures up to 120°C. For applications requiring PED compliance or guaranteed impact properties, specify P195TR2 instead , .
Available in diameters from 10.2mm to over 2500mm with wall thicknesses to 40mm and lengths up to 18m, these pipes are produced using the cost-effective SSAW manufacturing process while meeting the rigorous requirements of the EN 10217-1 specification , , .
P195TR1 is the entry-level strength grade in the EN 10217-1 family, offering approximately 17% lower yield strength than P235 and 36% lower than P265 , . It is the default choice for non-critical, low-pressure applications where cost optimization is the primary driver.
When ordering, ensure you clearly indicate the complete standard with grade, manufacturing process (SSAW), required dimensions, and any coating or supplementary requirements based on your specific application , , , .
