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PTFE Lined Pipe

General Information

After years of practical use of steel-lined PTFE lined pipe, the factors that directly affect its service life and stable performance are temperature, pressure, medium, etc.High-quality materials and advanced manufacturing process methods are the quality assurance of PTFE-lined products.

Since the introduction and research of integral molded PTFE lining technology, after years of unremitting efforts of engineers and technicians, integral molded lining products have been successfully produced.

Its characteristics are as follows:
1. High operating temperature: under the condition of strong corrosive medium, it can meet the operating temperature range of -60 °C ~ 150 °C, and within this temperature range (except for molten alkali metals, elemental fluorine and aromatic hydrocarbons), it can meet all chemical media. .

2. Vacuum resistance: in the range of -60 ℃ ~ 150 ℃, it can be used under vacuum conditions. In chemical production, partial vacuum is often caused by cooling, vertical discharge, and asynchronous operation of pump valves.

3. High pressure resistance: within the temperature range, it can withstand the operating pressure of up to 3Mpa.

4. Anti-permeability: PTFE resin is selected and processed into a PTFE lining layer with high density and sufficient thickness through advanced lining technology, so that the product has excellent anti-permeability.

5. The overall molding and sintering process lining solves the problem of steel-fluorine hot and cold expansion and contraction, so that it can achieve synchronous expansion and contraction.

6. It adopts standardized size preparation, especially the pipes and pipe fittings used in chemical pipelines have strong interchangeability, which provides great convenience for installation and spare parts.
Product design conforms to HG, GB and other standards. Manufacturing range DN15 ~ DN600mm. Applicable working temperature -60℃-150℃. Applicable working pressure positive pressure, the same as the shell steel. Negative pressure≤150℃, full negative pressure.

Advantage

★Modern production technology

★Short product lead time

★Invest in the latest technology

★Respond quickly and solve customer problems

★Production flexibility to meet customer requirements

★High product quality standards

LINED STEEL PIPE COMPANY

Evergreen (China) Co., Ltd is a professional manufacturer of filter equipment and mineral equipment accessories integrating R&D, production and sale.

We headquarter in Cangzhou City, Hebei Province and our factory covers an area of 33,000 m2,
Evergreen has powerful technical force, complete processing method and rich experience.

We introduce advanced CNC process center, CNC lathe, extrude machine, large type vulcanizing press, welding machine and other processing equipment as well as advanced test equipment like non-rotor rheometer and tensile tester from Japan and Germany.

Quality certificates

In order to provide better quality products and services to our customers, our company always takes market demand as the driving force and basis for continuous innovation of our enterprise, and takes professional technical design, excellent product quality and perfect service level as our solemn commitment to the market and society.
Our company adopts advanced UG mould design technology and CNC machining centre to make moulds to ensure the accuracy of product design and product performance.
Our products have passed the EU CE certification and three major system certifications (ISO9001:2015, ISO14001:2015, OHSAS18001:2007).

Certificates

Certificates

Certificates

Rubber Lined Steel Pipe Introduction

R&D History
Evergreen (China) Co.,Ltd as a mining and metallurgical equipment and accessories manufacturer integrating R&D, production and sales, with advanced UG product design, CNC machining centre, 4m*4m*6000T flat vulcanizing machine, φ3.5m*13m vulcanizing tank and a series of large production equipment, since 2015 began to develop steel and rubber composite pipe products, the purpose is to provide mineral processing, thermoelectric, chemical and other The purpose is to reduce the production cost and provide better quality products and services for enterprises such as mineral processing, thermoelectric power and chemical industry.
Our company from the selection of materials, design, respectively, similar products on the market for substantial optimization and improvement, the beginning of 2017, our company began to vigorously promote this product at home and abroad.
In 2018, we undertook a 4.1Km tailings conveying pipeline with PN6.3Mpa, model DN400, for China Gold Group Inner Mongolia Mining Co.
In 2019, we undertook a 5.2km tailings conveying line of PN6.0Mpa for China Gold Group Huatailong Copper Mine, model DN550, which is the first time our company produces large diameter, high pressure steel and rubber composite pipe, and it has been running for nearly 4 years so far and is running well.
In 2020 and 2021, we undertook a total of 12km of tailings conveying pipeline with PN6.3Mpa pressure for Shanxi Baoshan Mining Industry, model DN250.
In 2021, we undertook a DN600 and DN700 process pipeline for a copper mining project in Kazakhstan.
In 2022, we undertook a 9km steel and rubber composite pipeline line with PN4.0Mpa, type DN400, for the Huayou Cobalt Project in Zimbabwe.
At present, our company has established cooperation with many domestic and foreign mineral processing enterprises.

Rubber Lined Steel Pipe Introduction (2)
Rubber Lined Steel Pipe Introduction1

Production process

Rubber Lined Steel Pipe Introduction (2)
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Rubber Lined Steel Pipe Introduction (2)
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Technical Support Information - R&D Centre

Technical Support Information Centre
Technical Support Information Centre
Technical Support Information Centre

Advantages of the production process

Our self-developed “balloon traction” and “no seam” pipe lining processes are superior to other manufacturers’ “airbag direct expansion” and “seam” processes. Seamed” process.
① “Balloon traction” process: our company independently developed a new process of pipe lining, which refers to the use of special balloon traction from one end of the pipe mouth to the other end, to drive out the gas between the rubber and the inner wall of the steel pipe, so that the rubber lining on the inner wall of the steel pipe.
When the balloon or airbag is lined with a constant air pressure, the area under pressure of the balloon is much smaller than that of the airbag, so the pressure per unit area of the rubber and steel pipe is much higher in the “balloon traction type” than in the “airbag direct expansion type”, which ensures This ensures the adhesion of the rubber to the steel pipe. After experimental comparison, the “balloon traction” process is 20-30% stronger than the “airbag direct expansion” process in terms of rubber-metal bonding strength, and the “balloon traction” process takes up less labour and is more productive. process takes up less labour and the production efficiency is twice as high as that of the “airbag direct expansion” process, which is far ahead in the rubber-lined pipeline industry.
② “No seam” process: Some manufacturers currently use the “seam” process to make rubber lined pipes. The disadvantage of this is that the seam area is easily cracked under the wash of the slurry for years and years until the rubber lined pipe is decoupled, resulting in blockage of the pipe body and affecting production. Our company introduced rubber extrusion line to extrude the whole rubber pipe, the whole lining into the steel body wall, so as to ensure the smooth inner wall of the rubber lining pipe, but also to improve the service life. 

Rubber Lined Steel Pipe Introduction (2)
Rubber Lined Steel Pipe Introduction1

Main production equipment

Rubber Lined Steel Pipe Introduction (2)

①Automatic welding equipment. Welding of flanges and steel pipes into one piece

Rubber Lined Steel Pipe Introduction1

②Sandblasting room. The welded flange of the steel pipe will be sandblasted to remove rust as a whole

Rubber Lined Steel Pipe Introduction (2)

③ 28m rubber lining platform. Rubber-lined operating platform, rubber tubes do not fall to the ground, to ensure a clean environment and ensure the quality of rubber-lined adhesion

Rubber Lined Steel Pipe Introduction1

④Rubber tube extruders. Extrusion of rubber hose to ensure no lap joints on the rubber lined surface

Rubber Lined Steel Pipe Introduction (2)

⑤ Steam boilers. Provide vapour pressure for vulcanization to ensure heat and pressure

Rubber Lined Steel Pipe Introduction1

⑥φ3.5m*13m vulcanizing tank. Can vulcanize rubber-lined products with diameter less than 3m and length less than 13m

Rubber Lined Steel Pipe Introduction (2)

⑦CNC machining centres. Machining flanges, moulds and tooling

Rubber Lined Steel Pipe Introduction1

⑧Lathes. Machining flanges, moulds and tooling

Production capability

With the current configuration of our equipment and personnel, we can produce up to 50 km of steel and rubber composite pipes of DN100-DN400 and up to 30 km of steel and rubber composite pipes of DN500-DN800 every year.

Rubber Lined Steel Pipe Introduction (2)
Rubber Lined Steel Pipe Introduction1
Rubber Lined Steel Pipe Introduction (2)
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Shipment
Shipment
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Get In Touch

+86 180 3186 9514
Location
No. 009, Haihe Road CangZhou, HeBei, China.

Email
sales@china-miningtech.com

Mobile / WhatsApp
+86 180 3186 9514