Model NO.	DH-SWSP-FFGG
Material	Carbon Steel
Surface Treatment	Antiseptical
Usage	Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
Section Shape	Round
Connection Method	Flexible Socket Connection
Composite Process	Inner Expoxy Outsaide Polyethylene Steel Pipe
Coating Form	Inner and Outside Coating
Cathodic Strippin	(65±3℃,48h,-1.5V) ≤
Bending Resistance	Strengthen Level:1.5°, No Crack
Stamping Resistance	Strengthen Level:15j, No Leakage
Fracture Surface Interstice	1-3 Level
Adhesion Strength	1-2 Level
Anti-Scratch(20℃±3℃)	Strengthen Level(50kg):≤500μm,No Leakage
Transport Package	Standard Package
Specification	6m, 12m or Upon your request
Trademark	DHPI
Origin	Shandong, China
HS Code	3917330000
Production Capacity	50000000 Tons /Year

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The Internal Epoxy External Double-layer Epoxy Coated Pipe

The coated composite steel pipe is made of steel pipe as the base pipe,thermal setting epoxy resin poweer and polyethylene as the coating material,and is made by thermal processing and coating process.Plastic coated composite steel pipe intergrates the superior mechanical properties of steel and the suoerior chemical corrosion resistance of polymer materials,greatly extends the service life of steel pipe,with corrosion resistance,not easy to scale,high pressure superior performance,is a new type of anti-corrosion pipeline.
1. 2 powder coating production lines, 12 twin-screw extruders, , with perfect powder coating, polyethylene material modification R & D production capacity
2. The largest variety of powder anticorrosion process manufacturers, with: suction coating, spraying, rolling coating, dip coating and other methods.
3. The only one in the country set large-caliber steel pipe, anti-corrosion processing, anti-corrosion materials allproduced in one enterprise

Product Description

Internal Epoxy External Double-layer Epoxy Coated Pipe
The High-quality steel pipe is used as the base pipe,and a layer of expoxy resin material is coated on the inner and outer surfaces of the pipe through the thermal fusion process.

Product Parameters

Nominal Diameter/ mmInner Coating Layer /mmOuter coating layer,mm Ordinary levelStrengthen level DN ≤65>0.3>0.6>0.8 65≤DN≤150>0.35>0.8>1.0 150≤DN≤300>0.35>0.8>1.2 300≤DN≤800>0.4>1.0>1.3 800≤DN≤1200>0.45>1.2>1.8 1200≤DN≤3600>0.45>1.5>1.8

Note: can be customized as customer's needs.

Product Features

Epoxy & Plastic coated anti-corrosion steel pipe can adopt a variety of anticorrosive solutions to meet the needs of different working conditions. Applicable to buried,  trenchless traction, pipe jacking and open-air applications and other environmental conditions, the following anti-corrosion solutions can be used respectively:
 - Burried:inner epoxy outer PE,inner epoxy outer 3PE,inner epoxy outer 3PP,inner & outer epoxy coated
 - Pipe Jacking:inner epoxy outer 3PE,inner epoxy outer3PP,inner epoxy outer double layer epoxy
 - Trenchless traction:inner epoxy outer 3PE,inner epoxy outer 3PP,inner epoxy outer double layer epoxy
 - Open-air application:inner epoxy outer anti-uv coated

Good compatibility and easy mending
Double-layer epoxy inner and outer layers are both epoxy resin-based resin coating, the two are compatible with each other, patching using solvent-free epoxy coatings, good compatibility.

Good cathodic protection
The double-layer epoxy coating has good compatibility with the cathodic protection and will not shield the cathodic prot.

Good flexibility and resistance to bending
The coating material is made of epoxy resin with high molecular weight, which has good flexibility and excellent bending

Scratch Resistance
The outer layer is modified epoxy coating with special scratch material, which has excellent scratch resistance.

High Temperature Resistant
Double-layer epoxy anticorrosive steel pipe can withstand a maximum temperature of 110ºC.

 

Connection Method

1.Working steel pipe:seamless steel pipe,straight seam steel pipe and spiral steel pipe as the base pipe,play the main pressure role.
2.Internal corrosion layer: the molten epoxy powder is generally used as the internal corrosion layer,because the epoxy resin coating has strong adhesion,is not easy to fall off,smooth surface,not easy to scale to improve the delivery efficiency.
3.External preservative layer:preservative layer of molten epoxy powder,polyethylence powder or other matertials.

1.Bum butt welding flange connection       2.Plate-type flat welding fange connection    3.Hoop connection   

Appliation Cases