Visco Elastic Coating
(1) Changyuan Changtong New Material was established in 2000 and is a top-ranking manufacturer of battery protection materials, electronic components protection materials, medical instruments protection materials, and pipeline corrosion protection materials in China. It covers an area of over 30000㎡, has over 230 staff, and is equipped with a high-level R&D team, ISO 9001, ISO 14001, ISO 45001, IATF 16949:2016, ISO 10993, ISO 21809-3, EN 12068, DVGW, etc.
Visco-elastic sealing products for pipeline protection are a new type of high-performance visco-elastic polyolefin material. It preserves the dual characteristics of the solid adhesive material and liquid adhesive material. In normal conditions, its visco-elastic property will remain above 30 years. This product has excellent visco-elastic, sound water-proof, and easy-used characters.
— Permanent inflow behavior to steel, even at freezing temperatures
— Thermally stable-45℃ to 70℃ atmospheric
— Physically, mechanically, chemically stable
— Excellent adhesion on metal and materials like PE, PP, FBE
— Water and gas-tight
— Non-crystalline
— Self-repairing
— No stress generation
Visco-elastic coating can be used to protect the valve from corrosion. Normally viscoelastic anticorrosive tape and viscoelastic anticorrosive paste are used together. The specific operation process is as follows: fill the valve with viscoelastic anticorrosive paste. The grooves and bolts of flange parts are filled by hand press. Then wrap the valve surface with viscoelastic anticorrosive tape. It is also necessary to wrap cold-applied PE or PP tape on the outer surface as the outer protective tape if the valve needs to be buried.
(1) Pipeline corrosion protection materials we offer are field joint coating and pipe system coating solutions, which have passed DVGW certification in Germany and meet the ISO 21809-3 and EN 12068 standards. This product can be used as the protection coating of oil and gas pipelines such as pipe welded joints, pipe fitting, pipe bend, pipe elbow, pipe Flange, pipe tee, and pipe valve, and it plays the role of insulation, sealing, withstand moisture, chemical damage and physical damage, etc. Our pipeline Visco elastic materials have a good performance, the Lap shear strength at 23℃ is 0.027 N/mm2, the Lap shear strength at 70℃ is 0.005N/mm2, the Cathodic disbondment resistance at 23℃ is 0mm self-healing <24 hours and the Electrical resistance is more than 10^15 ohm/cm.
(3) Changyuan Changtong has first-class production equipment, a nationally certificate CANS laboratory, and advanced testing equipment, to ensure production process control and product testing technology. The performance of the company's products meets the ISO 21809-3 and EN 12068 standards and the latest international environmental requirements.
(4) About the production process of Pipeline visco elastic materials:
1. Raw material control for visco elastic products
We will detect the performance of every batch of raw material to confirm whether they meet the requirements, such as shrink rate, environmental protection, tensile strength, etc.
2. Production monitoring for visco elastic wrapping band
Every production process has a test record to ensure that the next process of semi-finished products is qualified and records the test data. Strengthen the control of key processes and ensure the quality of products in the production process is stable.
3. Warehouse-in Inspection
Before packaging and storage, finished products must be inspected one by one, and they can only be packaged and stored after all physical and chemical properties are qualified.
4. Delivery Inspection for visco elastic products
The company will conduct random inspections and make the relevant performance tests on each batch of products in the company laboratory before delivery. We will also issue a factory inspection report. The products can only be shipped out after qualification.
(5) About the pipeline corrosion protection materials, we can offer high-quality 3-layer PE heat shrinkable sleeves for pipe welded joints, 3 layer PP heat shrinkable sleeves for field joint coating, PE heat shrinkable tape for Bend, Elbow, and Tee, PP heat shrinkable tape, heat shrinkable sleeves for horizontal Directional Drilling, PE cold applied tape, PP reinforced cold applied tape, Visco elastic tape, Visco elastic paste, Visco elastic coating+pe/pvc outer wrap, Pipe abrasion resistant overcoat, photo-curing sleeve for pipe HDD, epoxy glass fiber reinforced coating for HDD, pipe PE/PP coating repair patch, pipe PE/PP coating repair rod. We have them in stock, small order quantity is available. Besides our company supports OEM and OMD services. Our company owns a high-standard research and development team and advanced printing equipment, which can produce pipeline corrosion protection products according to your requirements and help you print your logo.
(6) What kind of coatings can we use to protect gas and oil pipelines?
Here are some common use coatings:
Fusion Bonded Epoxy (FBE): A thermosetting powder coating that provides excellent adhesion and corrosion resistance.
Polyethylene (PE): A thermoplastic coating that offers good mechanical protection and chemical resistance.
3-layer PE/PP Heat Shrinkable Sleeve: A three-layer protective system designed for corrosion protection of pipelines, particularly for field welded joints.
PP/PE Cold-applied Tape: Cold Applied Tape is a specialized protective solution designed to safeguard various surfaces, particularly pipelines, from corrosion and environmental damage.
Viso Elastic Coating: Visco-elastic materials can be used to protect the valve from corrosion. Normally viscoelastic anticorrosive tape and viscoelastic anticorrosive paste are used together.
PE/PP pipe coating repair patch rod: Repair patch is a heat-applied patch or rod, which in combination with mastic filler, offers an economically effective and highly qualified repairing system for factory PE/PP pipe coatings damaged mechanically during transportation, storage, and laying of pipes.
Coal Tar Enamel: A traditional coating used for underground pipelines, providing high resistance to moisture and chemicals.
We participated in CIBF2025 to showcase our innovative products and solutions.
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