3LPP Coated Pipe

3LPP Coated Pipe

ISO 21809-1 3LPP Pipe Coating for Marine and Industrial sector

3LPP Coated Pipe

Table of contents

3LPP Coated Pipe Specification
Size 1/2 to 48
Pipe Thickness SCH 40, SCH 80, SCH 160, Etc
Standards
  • DIN 30670
  • AWWA C200
  • AWWA C213
  • CSAZ245
  • AWWA C210
Temprature Range -20°C to 110 °C
Melting Point 110°C
Harḍness Shore D 63
HSN Code 73051121
Ends Plain / Threaded / Bevelled / Screwed
MTC EN 10204 3.1 & 3.2

3 Layer Polypropylene (3lpp) Carbon Steel Pipe for Off-shore and on-shore

Applications of 3LPP Coated Pipe



Total Coating Thickness of 3LPP Coated Mild Steel Pipes
Pm kg/m Total Coating Thick A in (MM)
A3 Class A2 Class A1 Class B3 Class B2 Class B1 Class C3 Class C2 Class C1 Class
15<50 3.0 2.4 2.0 2.7 2.1 1.5 2.4 1.9 1.5
Pm>300 4.7 3.8 3.2 4.2 3.3 2.5 3.8 3.0 2.5
50<130 3.5 2.8 2.4 3.1 2.5 1.8 2.8 2.3 1.8
Pm<15 2.6 2.1 1.8 2.3 1.8 1.3 2.1 1.7 1.3
130<300 3.9 3.2 2.6 3.5 2.8 2.2 3.2 2.5 2.2

3 Layer Polypropylene (3LPP) Carbon Steel Pipe Class Classification
Three Classes of Surfacing Materials
A: Low-density Polyethylene (LDPE)
B: Medium-density Polyethylene / High-density Polyethylene (MDPE/HDPE)
C: Polypropylene (PP)

Designed Temperature of 3LPP Coated Seamless Steel Pipes
Class on Coating Design Temp in (°C) Top Layer Material
C -20 to + 110 PP
B -40 to + 80 HDPE / MDPE
A -20 to + 60 LDPE

Raw Material Properties of 3LPP Coated Pipe
Properties Test method Unit Requirements
A & B Class Class C
FBE (Epoxy Powder )
(DSC Analysis B) Min Glass Transition Temp in (Tg2) ISO 21809-1Annex D °C >95.0 & in Accordance With the Manufacturer's Specifications A Min of 95.0 and at Least 5 °C Higher Than the Max Pipeline Design Temp
Content of Moisture ISO 21809-1Annex K %, Mass <0.6
Epoxy That is Liquid and Either Mono- or Bi-component
205°C + 3°C Gel Time Manufacturer's Specifications S 20% or Less of the Manufacturer's Stated Nominal Values
Density ISO 2811 (Every Component) g/cm3 Manufacturer's Specified Range Within (+/- 0.05)
(DSC Analysis B) Min Glass Transition Temp in (Tg2) ISO 21809-1 (Annex D) °C Within Manufacturer's Specification & >95.0 A Min of 95.0 and at Least 5 ° Above the Max Pipeline Design Temp
Solid content of base and hardener ISO 3251 % mass Compliance With Manufacturer's Instructions

3 Layer Polypropylene Carbon Steel Pipe Working Life
Operating Temp in (℃) Service Life Expected Min (Year)
100 8
80 30
23 50
90 16
60 50

Types of 3LPP Coated Pipe
3LPP Coated Mild Steel Pipes
3LPP Coated Mild Steel Pipes
3LPP Coating
3LPP Coating
3LPP Coated Seamless Steel Pipes
3LPP Coated Seamless Steel Pipes

3LPP Oil and Gas Line Pipes
3LPP Oil and Gas Line Pipes
ISO 21809-1 3LPP Line Pipe
ISO 21809-1 3LPP Line Pipe
3LPP External Coating Steel Pipe
3LPP External Coating Steel Pipe

3LPP Coating Lined Steel Pipe
3LPP Coating Lined Steel Pipe
ISO 21809-1 3LPP Coated Line Pipe
ISO 21809-1 3LPP Coated Line Pipe
3LPP Coated Polyethylene Coating Steel Pipe
3LPP Coated Polyethylene Coating Steel Pipe

3 Layer Polypropylene Carbon Steel Pipe
3 Layer Polypropylene Carbon Steel Pipe

3LPP Coating Requirements for the Adhesive Material
Properties Method of Testing Unit Conditions
Class C Class B Class A
Stress at Yield at 23°C+3°C ISO 10350-1
ISO 527-2		 MPa ≥12 ≥8 ≥5
Strain at Break at 23 °C+3°C ISO 10350-1
ISO 527-2		 % ≥400 ≥600 ≥600
Vicat Softening Temp in (a/50) ISO 306 °C ≥115 ≥60 ≥85
Impact Strength of Charpy, Notched at Min Class Temp ISO 179-1 & ISO 179-2 kJ/m² ≥3 - -
Water content ISO 15512 Powder or Pellet
ISO 8130-7 Powder		 % ≥0,05 ≥0,05 ≥0,05
MFR ISO 1133-1 g/10 min As Per the Manufacturer's Specifications
Density ISO 1183 (all parts) g/cm³ As Per the Manufacturer's Specifications

Testing and Inspection of 3LPP Coated Seamless Steel Pipes
Properties Test method Unit Frequency production Frequency Coating System Qualification/ PQT/PPT Requirements
Speed of Blasting Lines Stopwatch m/min 1/shift Every Pipe Observance of APS
Before Blasting, the Pipe's Temperature Probe for Thermal Contact °C Each 4 h Once 3 °C Above the Dew Point, Min
Surface State Before to Blasting Visual Inspection - Every Pipe Every Pipe Not contaminated
Speed of the Coating Line Stopwatch m/min 1/shift Each Pipe Observance of APS
Conditions of the Environment Direct Measurement & Computation - Each 4 h Once According to the Measurement's Timing
Temp of Extruded Adhesive and Top Coat A Thermometer or Other Authorized Device °C Each 1 h Once Observance of APS
Roughness of Blasted Surface ISO 8503-5 or ISO 8503-4 um Each 1 h 5 pipes Are to Be Examined 50 to 100
Visual Inspection on Blasted Surface ISO 8501-1 - Every pipe EveryPipe Grade Sa 2 1/2 Min

Similar Requirements of 3LPP Oil and Gas Line Pipes
ISO 8501-1 SSPC-SP NACE Designation
Sa 3 5 1 Cleaning with White Metal Blast
Sa 2.5 10 2 Cleaning From Near-white Metal Blast

3LPP Coated Mild Steel Pipes Properties
Properties Values
Max Recommended Temp + 110°C
Elongation at Break > 600%
Min Recommended Temp – 20°C
Hardness  Shore D 63

Temperature Resistance of 3LPP Coated Pipe
Material Temperature Resistance
3LPP Coated Pipe Up to 110°C

3LPP Coating Thermal Conductivity
Material Thermal Conductivity
3LPP Coated Pipe 0.34 (W/mK) at 20(°C)

Advantages of 3LPP Pipe Coating
  • Low Maintenance
  • Easy Inspection
  • Versatility
  • Eco-Friendly
  • Resistance to Harsh Environments

3LPP Coating on Fittings and Flanges

Fittings Types

3LPP Coated Carbon Steel Fittings
3LPP Coated Carbon Steel Fittings
3LPP Coating SA234 WPB Fittings
3LPP Coating SA234 WPB Fittings
3 Layer Polypropylene A234 WPB Tee
3 Layer Polypropylene A234 WPB Tee

A234 WPB ISO 21809-1 3LPP Reducer
A234 WPB ISO 21809-1 3LPP Reducer
ASME SA234 WPB 3LPP End Cap
ASME SA234 WPB 3LPP End Cap
3LPP 3 Layer Polypropylene WPB Bend
3LPP 3 Layer Polypropylene WPB Bend

3LPP Coating WPHY 42 Fittings
3LPP Coating WPHY 42 Fittings
3LPP Coated WPHY 52 Buttweld Fittings
3LPP Coated WPHY 52 Buttweld Fittings
ISO 21809-1 3LPP WPHY 60 Weld Fittings
ISO 21809-1 3LPP WPHY 60 Weld Fittings

3LPP Coated WPHY 65 Seamless Fittings
3LPP Coated WPHY 65 Seamless Fittings
API 5L 3LPP Coated Welded Fittings
API 5L 3LPP Coated Welded Fittings
3LPP Coating A420 WPL6 Pipe Fittings
3LPP Coating A420 WPL6 Pipe Fittings

A420 WPL6 3 Layer Polypropylene Elbow
A420 WPL6 3 Layer Polypropylene Elbow
ISO 21809-1 3LPP ASTM A234 WPB Elbow
ISO 21809-1 3LPP ASTM A234 WPB Elbow

Flange Types

ISO 21809-1 3LPP Carbon Steel Flanges
ISO 21809-1 3LPP Carbon Steel Flanges
Three Layer Polypropylene LTCS Flanges
Three Layer Polypropylene LTCS Flanges
3LPP Coated ASTM A105 Weld Neck Flange
3LPP Coated ASTM A105 Weld Neck Flange

3 Layer Polypropylene A350 LF2 Slip On Flange
3 Layer Polypropylene A350 LF2 Slip On Flange
3LPP Coating A694 F52 Socket Weld Flange
3LPP Coating A694 F52 Socket Weld Flange
A105N 3LPP 3 Layer Polypropylene Blind Flanges
A105N 3LPP 3 Layer Polypropylene Blind Flanges

SA694 F60 3LPP Coated Plate Flange
SA694 F60 3LPP Coated Plate Flange
3LPP A694 F65 Long Weld Neck Flange
3LPP A694 F65 Long Weld Neck Flange

3LPP Coated Pipe Density
Material Density
3LPP Coating 0.90 g/cm³

Marking of 3 Layer Polypropylene Carbon Steel Pipe
  • Applicator's Name or Code;
  • Indication That Relevant Pipe Specification or Standard Requires;
  • The ISO 21809-1:2018 Paper as a Source;
  • Class of Coating Thickness;
  • The Required Overall Coating Thickness of 7.3;
  • Max Tempe of Design (Only for Class C).

3LPP Pipe Coating Process

3LPP Pipe Coating Process


3LPP Coated Pipe HSN Code
Grade HSN Code
3LPP Coated Pipe 73051121
3LPP Coating Thickness
Material Density
Three-Layer Polypropylene Coating Between 1.0 MM & 4.5 MM

whatsapp chat