3LPE Coated Pipes API 5L Grade B Pipes WITH 3LPE COATING FBE LINING
3LPE means Three-Layer Polyethylene Wrapping,which is a multilayer coating composed of three functional components: A high performance Fusion Bonded Epoxy (FBE) primer, followed by a copolymer adhesive and an outer layer of polyethylene which provides tough, durable protection. 3LPE systems provide excellent pipeline protection for small and large diameter pipelines operating at up to moderately high temperatures
API 5L Grade B pipe is one of the most popular grade for the line pipe for oil and gas pipeline transmissions. It also called L245 Pipe refer to ISO 3183, named by minimum yield strength 245 Mpa (35,500 Psi). API 5L grade B also has the similar value on chemical composition, mechanical properties with ASTM A106 B or ASTM A53 B Pipe
API 5L Grade B pipe Chemical Requirement
| Standards | C max % | Mn max% | S max % | Si min % | Cr max % | Cu max % |
| A106 Gr. B | 0.30 | 0.29-1.06 | 0.035 | 0.10 | 0.40 | 0.40 |
| API 5L Gr.B/L245 | 0.28 | 1.20 | 0.030 | / | 0.50 | 0.50 |
API 5L Grade B pipe Tensile Requirement
| Standards | Tensile Strength Mpa | Yield Strength Mpa | Elongation % |
| A106 Gr. B | ≥415 | ≥240 | 20 |
| API 5L Gr.B/L245 | ≥415 | ≥245 | 23 |
3LPE COATED API 5L GRADE B PIPE
3LPE COATED A106 Grade B Pipes
3LPE COATED API 5L GRADE X42 PIPE
3LPE COATED API 5L GRADE X65 PIPE
3LPE COATED API 5L GRADE X52 PIPE
General STRUCTURE OF 3 LPE COATED PIPES.
3 LPE pipe,three layer polyethylene coating steel pipe, conforming to DIN 30670 standard.
DIN 30670 is a polyethylene coating on steel pipes and fittings. Requirements and testing.
This anti-corrosive coating consists of the following layers:
Layer 1: Usually the corrosion protective layer. This layer is of combination bonded epoxy which offers exceptionally good corrosion protection. The fusion reinforced epoxy contains a very great holding with the blasted steel surface
Fusion Bonded Epoxy. This later provides protection against corrosion and is fusion bonded with the blasted steel surface.;
Layer 2: This layer is the copolymer adhesive. The copolymer adhesive could be a maleic anhydride united polyethylene compound. This material has great chemical holding to the fusion reinforced epoxy and the beat layer polyethylene.
Layer 3: This layer is for physical protection and comprises polyethylene. Since the copolymer adhesive and polyethylene are comparable, they bond well with each other
Layer1 of minimal thickness of 80 µm,layer2 of minimal thickness of 250 µm,Then What’s the specification for the thickness of 3LPE coating?Minimum total thickness of polyethylene coating shall be as below:
| Normal size | Minimum Total Coating Thickness | |
| Normal type | Reinforced type | |
| ≤DN 100 | 1.8 | 2.5 |
| ˃DN100 ≤DN250 | 2.0 | 2.7 |
| ˃DN250 <DN500 | 2.2 | 2.9 |
| ≥DN500 <DN800 | 2.5 | 3.2 |
| ≥DN800 | 3.0 | 3.7 |
Our 3LPE coating capacity:
| CAPABILITY/PROPERTY | 3LPE |
| Minimum pipe diameter | 51 mm (2″) |
| Maximum pipe diameter | 1220 mm + (48″)+ |
| Minimum recommended handling and construction temperature | -40°C |
| Maximum recommended operating temperature | 85°C |
| Bendability | yes |
Characteristics of 3PE coated steel pipe :
- High tightness. It can save energy, reduce costs, protect the environment in long-term operation.
- Corrosion resistance is very strong. The construction side simply speed. Up to 30~50 years service life.
- With good resistance to corrosion and impact resistance, low water absorption. The PE ( less than 0.01% ) at low temperatures.
- High strength epoxy. PE absorbent and hot melt adhesive softness, etc. have high corrosion reliability.
Features and Advantages of 3LPE Coated Steel Pipe
1. Excellent chemical and corrosion resistance preventing steel pipes from any damage.
2. Resistance to cathodic disbondment
3. The external layer of polyethylene prevents any physical damages to either the pipes or the fusion bonded epoxy during handling
4. The 3LPE coated pipes have high performance characteristics and an extended life cycle
We provide externally coated carbon steel pipes with 3LPE coating for applications in buried or submerged environments. We also supply other anti corrosion pipeline coatings such as 3LPP, FBE and internal epoxy coatings.
Standards used in manufacturing 3LPE pipes are:
-
Our coated pipes are mainly used for anti corrission DIN 30670 Polyethylene Coating for Steel Pipes and Fittings, Requirements and Testing
CAN/CSA Z245.20 External Fusion Bond Epoxy Coating for Steel Pipe
CAN/CSA Z245.21 External Polyethylene Coating for Pipe
API 5L Recommended Practice for Internal Coating of Line Pipe for Non-Corrosive Gas Transmission Service.
ISO 15741 Paints and varnishes – Friction-reduction coatings for the interior of on- and offshore pipelines for non-corrosive gases
NFA 49-710 External Three-Layer Polyethylene Based Coating,Application by Extrusion
NFA 49-711 External Three-Layer Polypropylene Based Coating,Application by Extrusion
ISO/DIS 21809, Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems – Part 1: Polyolefin coatings (3- layer PE and 3- layer PP) ;Part 2: Fusion-bonded epoxy coatings;Part 3: Field joint coatingsFusion Bonded Epoxy Coating: AWWA C213
TS 5139,
UNI 9099
Polyurethane Coating: BS 5493
Lining: AWWA C210, TS 5140
How to Order our 3LPE COATED STEEL PIPE?
Type: Coated Pipe 3LPE
Material Grade: Carbon Steel API 5L GR B
Size: 6 Inch SCH80
QTY:1200MS
