This section provides an overview for lined steel pipes as well as their applications and principles. Also, please take a look at the list of 30 lined steel pipe manufacturers and their company rankings. Here are the top-ranked lined steel pipe companies as of December, 2023: 1.ANDRONACO INDUSTRIES, 2.Harrington Industrial Plastics, 3.Sunny Steel Enterprise Ltd..
Lining steel pipe is a steel pipe coated with a corrosion-resistant material on the inside, outside, or both sides.
When used as piping, it may seem cheaper to use Teflon, hard rubber, or resin as is, but basically these resins and rubbers are inferior in strength as piping.
However, if steel is used as it is, its durability against chemicals will be significantly reduced. Therefore, lining steel pipe is used to pursue both performances. Internal linings are mainly used for lines where durability is also required, such as hydrochloric acid piping and lines through which a wide variety of liquids pass, while external linings are used for buried piping and for plants along coastlines that are prone to corrosion.
Lining steel pipes are mainly used in lines where chemicals flow. Although PVC piping, etc., can be used for small-diameter piping where it is used, the piping conveyed to each section is large, and the risk of breakage or leakage is very high. Therefore, they are used in lines where not only a single chemical but also a wide variety of chemicals flow, and in lines with high temperature and high pressure.
Lining steel pipes with Teflon or vinyl chloride to compensate for their strength allows them to be used as piping under high temperatures and pressures where Teflon or vinyl chloride alone cannot be used.
The properties of lining steel pipe are as follows:
Since the inner and outer surfaces are covered with corrosion-resistant materials, they are highly durable against acids, alkalis, salts, and other chemical substances. In addition to chemicals, buried water piping cannot be easily maintained if corrosion progresses, so it can be used for a long period of time.
Since steel pipes are used, they can be used in high-pressure, high-temperature applications where resin piping alone cannot be used.
Although highly viscous substances adhere to the piping, the lining process can reduce the rate of adhesion by lowering the coefficient of friction.
Smooth inner surface prevents stains and reduces rust and debris generation due to corrosion of metal parts.
Some are sold as standard products, but large-diameter or special products require lining processing as needed.
The lining removes dirt, oil, and moisture from the inside of metal pipes. Next, the lining liquid is mixed and injected from one side of the pipe, and the pipe outlet is sealed to prevent leakage of the lining liquid.
The piping is then tilted or rotated so that the liquid is spread over the entire pipe, and the temperature, humidity, and other conditions are adjusted, and the piping is left to cure. After curing is complete, the lining is inspected for holes and defects using special equipment, and the lining agent residue is removed as a final step. Flanged structures can be processed as a single-piece lining, but on-site installation can be facilitated by using a special threaded elbow or similar device.
Depending on the material, the adhesive or a molding furnace may be used to adhere the material to the interior. However, since each of these methods has its own advantages and disadvantages, it is necessary to fully discuss with the installation company before making a decision on the actual production of the product.
The types of lining steel pipes are as follows:
It is a common lining material and is widely used for its corrosion resistance, durability, and heat resistance. There are many specialized lining companies, not limited to piping.
It is often used for transporting chemicals in water treatment and chemical plants due to its strong corrosion resistance, durability, and heat resistance. With low viscosity and high fluidity, it can be applied to complex shapes and is widely used in addition to piping.
It is widely used for low-pressure transportation because of its corrosion resistance, durability, low cost, easy availability, and processability by heating.
It is inexpensive, durable, and has long been used in lining steel pipe for water supply (VLP) to prevent contamination by foreign matter due to rust, etc. It is also easy to thread and install.
It is difficult to process, expensive to manufacture, and easily cracked, but it is used for special applications due to its high temperature, corrosion resistance, and low flow resistance.
*Including some distributors, etc.
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Ryan Herco Flow Solutions was founded in the 1950s in California. RHFS sells and provides value added support for a wide variety of fluid handling and filtration needs. Product categories include tubing, hoses, piping, drain waste vent & containment, valves, measurement & control devices, fluid pumps, filters & housings, storage & containment tanks, heaters, mixers, and grating in addition to customized systems and material fabrication. Value added services include industrial service and repair of components, custom fabrication, and pump repair services.
SEMCOR, established in 1907, is a distributor of industrial products and services located in St. Louis, Missouri, USA. The company primarily caters to industrial customers across Missouri, Illinois, Indiana, Iowa, and Kentucky, with the reach extending throughout the United States. Partnering with industry-leading suppliers, the company provides products to various sectors, including chemical processing, food manufacturing, utilities, mining, sanitary processes, and many others. The industrial product line includes fluoropolymer (PTFE) lined pipes, fittings, valves, industrial hoses, and expansion joints. Providing comprehensive services for material and fluid movement, the company has an extensive inventory, technical expertise, and fabrication technology.
Harrington Industrial Plastics LLC., founded in the United States in 1959, is a distributor of PVC pipes, valves, and fittings. The company's product portfolio includes pressure pipes, drainage pipes, specialty pipes, and a variety of PVC valves, such as ball valves, gate valves, check valves, and butterfly valves. Its products are used for plumbing and water distribution systems in residential, commercial, and industrial construction and for irrigation, water supply, and drainage systems in agricultural applications.
Aesteiron Steels LLP (ASL) is an Indian manufacturer and supplier of seamless tubing and welded steel pipes that was established in Mumbai in 2007. The company primarily produces various steel pipes in various grades, including carbon, alloy, and stainless steel models, as well as aluminum and copper pipes with higher conductivity. They also offer custom fabrication of alloy pipes using different elements such as chromium or molybdenum, or with specifications for higher oxidation or corrosion resistance. ASL chiefly serves clients in the power generation, petrochemical processing, water treatment, construction, and infrastructure sectors.
Bueno Technology Co., Ltd. is a manufacturer and supplier established in 1969, specializing in providing flow control products, and is headquartered in Tainan City, Taiwan. Their product range encompasses water and oil-free valves, fittings, and components for industries such as pharmaceutical, semiconductor, optoelectronic, electrochemical, and petrochemical. These products ensure the safety and stability of the manufacturing process. Bueno Technology Co., Ltd. has factories located in Taiwan, China, and Vietnam. The company has achieved several international standards, including ISO 9001-2000, ISO 14001, and AD200W, for its quality and environmental management systems.
Duratec Technical Ceramic Applying Co.,Ltd., founded in 2005 and located in Shandong, China, is a supplier of high-tech ceramic products. Its broad range of products includes alumina ceramic, chromium carbide, ceramic glove molds, cast basalt, and ceramic rollers. The company’s offerings are used for wear-resistant components, hard-facing surfaces, glove mold shaping, abrasive material handling, and high-temperature support. These products serve industries requiring durability, protection, and performance in challenging environments. The company is also ISO 9001 and ISO 14001 certified.
Sunny Steel Enterprise Ltd., established in 2008 and headquartered in Shanghai, China, is a manufacturer and supplier of abrasion-resistant pipes and fittings. The company offers a wide range of products, including abrasion-resistant pipes and fittings, steel pipes, valves, fasteners, and more. It also offers heat exchanger tubes, boiler tubes, chromoly tubing, flanges, and pipe fittings. Its boiler tubes are suitable for high-pressure and high-temperature applications, ensuring performance in power generation and other industries. It serves a wide range of industries, including steel, petrochemical, power generation, pharmaceutical, and food processing.
Nikken Sangyo Co., Ltd., established in 1946 and located in Osaka, Japan, is a manufacturer of metalworking and hydraulic machinery. The company produces a wide range of items, including boom members for cranes, steel pipes, and rigid PVC-lined pipes. It also provides hand tools for general works, water filtration, and air purifiers. Its Kenko Sleep System is designed to provide relief from aches and pains and it offers a cocooning effect that lulls to sleep. Moreover, the company has won the Good Design Award in Japan. It serves various industries such as construction, industrial machinery, automotive, and transportation.
Hebei Haihao High-Pressure Flange Pipe Fitting Group Co., Ltd., established in 1982 and headquartered in Mengcun County, is a manufacturer specializing in pipe fittings, flanges, and steel pipes. The company offers an extensive and diversified product portfolio that includes butt weld pipe fittings, forged flanges, steel pipes, and customized non-standard products, utilizing carbon steel, alloy steel, and stainless steel materials. These products find applications across various industries, including construction, telecommunications, petroleum transportation, and water and sewage treatment. The manufacturing processes typically involve forging, cold pressing, cold forming, hot extrusion, and chrome finishing to ensure durability.
Mersen was established in 1891 in Newburyport, USA, and is a manufacturer and supplier of electrical supplies and materials for process industries, building and construction, and corrosive chemicals markets. The company offers solutions such as electrical control and protection, power management, and power transfer equipment. Its product catalog includes high and medium-voltage fuses, aluminum electrolytic capacitors, and piping systems and accessories. The products are distributed in countries like the USA, Argentina and Japan.
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