Zhongxin Tube
Company Introduction
Founded in 2004 in Nanjing, China, Jiangsu Zhongxin Pipe Sci-Tech Co., Ltd. has over two decades of dedicated expertise in the manufacture and distribution of high-performance bimetal composite pipes, matching pipe fittings and flanges.
Our core product range includes Mechanically Clad Composite Steel Pipes, Metallurgically Clad Composite Steel Pipes, Internally Clad Composite Pipes, Weld Overlay Composite Pipes, Mechanically Lined Pipes, together with a full range of Pipe Fittings, Metallurgically Clad Fittings and Weld Overlay Flanges. Backed by profound technical accumulation and professional capabilities, we have established ourselves as a quality benchmark in the industry. Our products serve a wide range of demanding applications across key sectors including oil & gas, petrochemicals, offshore engineering, seawater desalination, electric power, geothermal energy, coal chemical, hydrogen energy, water/gas/salt energy storage, food & pharmaceuticals, and municipal water supply. Supported by superior product performance and comprehensive service solutions, we have established long-term strategic partnerships with renowned domestic and international enterprises including Sinopec, CNPC, CNOOC, ADNOC, CHN Energy, Power China, China Huaneng, Energy China, China Three Gorges Corporation, CATL, BYD and Alibaba Group, earning an excellent reputation and high credibility throughout the industry.
Boasting an annual production capacity of 200,000 metric tons, we provide customized engineering solutions for the most severe operating conditions, which are precisely tailored to our customers’ diverse requirements. Our product quality strictly complies with internationally recognized standards, including API-5LD, DNV-ST-F101, SHELL DEP 31.40.20.32-Gen, and ADNOC-AGES, as well as other leading industry specifications. Backed by robust technical strength, we demonstrate core competitiveness in the bimetal composite pipe sector and support the high-quality development of industries worldwide.
Focus on Oil, Gas & Offshore Engineering
Product
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Mechanically Lined Steel Pipe（MLP）
Adopting advanced mechanical spinning composite technology, the mechanical composite steel pipe closely bonds two complementary metal materials (usually carbon steel as the base pipe, and stainless steel, duplex steel, nickel-based alloy, titanium alloy, or Monel alloy as the inner liner) through elastic and plastic deformation. It requires no high-temperature fusion, featuring full-process green environmental protection and high energy efficiency. Strictly complying with international and industry standards such as API-5LD, DNV-ST-F101, SHELL DEP 31.40.20.32-Gen., ADNOC-AGES, GB/T31940, and CJ/T 192, the product combines the high strength and high pressure-bearing capacity of the outer base pipe with the corrosion resistance and wear resistance of the inner cladding, effectively solving the industry pain points of "insufficient strength" or "poor corrosion resistance" of single-material pipes.
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Clad Steel Pipe
The inner clad composite steel pipe is a bimetallic composite pipe with high-strength carbon steel or low-alloy line pipe steel as the base material, and a uniform layer of stainless steel, duplex steel, or nickel-based corrosion-resistant alloy cladding on the inner wall. It features corrosion resistance on the inner wall and pressure bearing on the outer wall. Through the metallurgical bonding process, the base and cladding achieve atomic-level firm bonding, with no gaps, no delamination, corrosion resistance and high pressure resistance. It is a new generation of high-end anti-corrosion and pressure-resistant pipeline products replacing pure alloy steel pipes, and surfacing pipe fittings.
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Weld Overlay Clad Steel Pipe
The weld overlay clad steel pipe adopts advanced automatic weld overlay technology to clad a layer of high-wear-resistant, corrosion-resistant and high-temperature-resistant alloy materials (such as nickel-based alloy 825, 625, duplex stainless steel, etc.) on the inner wall of the base pipe. By accurately controlling the cladding thickness and dilution rate, it achieves perfect integration of the base pipe and the surfacing layer, significantly improving the service life and safety performance of the pipe under extreme working conditions. The product is accurately adapted to designated high-end industries and widely used in heavy industrial fields such as oil and gas (offshore oil and gas platforms, downhole oil and gas transmission pipelines), chemical industry (supporting pipelines for high-end chemical reactors, transportation of corrosive media), marine engineering (seawater desalination, offshore platform pipe networks), and electric power (nuclear power plant cooling systems, high-temperature and high-pressure pipelines in power plants). It is the core solution to replace traditional lined pipes and integral alloy pipes.
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Mechanically Lined Pipe Fittings
Mechanically lined pipe fittings are core supporting products of composite pipeline systems, specially customized for inner lined composite steel pipes. They adopt corrosion-resistant materials such as stainless steel consistent with the inner lining material of the pipeline. Through precise processing and composite technology, they realize seamless connection between pipe fittings and pipelines, ensuring the corrosion resistance, tightness and integrity of the entire transportation system, and eliminating hidden dangers such as medium leakage and corrosion caused by mismatched materials and loose connection between pipe fittings and pipelines. Complete Product Specifications: Covering all categories such as elbows, tees, reducers, and flanges, with a caliber range of NPS 1/2" to NPS 60"; conventional specifications are in stock, and special specifications can be customized on demand. The bonding force is as high as 0.2-16MPa, higher than the industry standard, and almost zero maintenance during service. It has high strength, extrusion resistance and resonance resistance, effectively reducing the leakage risk caused by external impact, and at the same time balancing safety and hygiene, energy conservation and environmental protection, with excellent thermal insulation performance. It can be widely adapted to designated industries: urban water supply/heating/gas (pipe network supporting pipe fittings), oil and gas (oil and gas transmission pipeline supporting), chemical industry (chemical pipeline connection), electric power (power plant pipeline supporting), medicine and food and beverage (hygienic pipeline connection) and other fields with strict requirements on pipeline systems, ensuring the stable and efficient operation of the transportation system.
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Metallurgically Composite Pipe Fittings
Metallurgical composite pipe fittings (also known as bimetallic metallurgical composite pipe fittings) are high-end pipeline accessories integrally formed by combining high-strength carbon steel/alloy steel base layer with high-performance corrosion-resistant alloy cladding through metallurgical bonding process (atomic-level molecular fusion). They integrate structural strength, corrosion resistance and economy, and are the core solution for high-temperature, high-pressure and strong corrosion working conditions.
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Weld Overlay Flanges
The weld overlay flanges adopts advanced automatic weld overlay technology, with low-cost carbon steel or low-alloy steel as the base, and a layer of corrosion-resistant alloy (such as nickel-based alloy 825, 625, 316L stainless steel, etc.) surfaced on the flange sealing surface and key contact parts. It combines the high strength of the base and the excellent corrosion resistance of the surfacing layer, replacing traditional pure alloy flanges, greatly reducing material costs, and meeting the harsh requirements of high-end working conditions.
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Bi-Metal Composite Steel Pipe Solution For Oil & Gas
Corrosion poses a persistent and critical challenge in oil and gas production and transportation. Harmful media such as CO₂, H₂S, seawater, and chlorides in crude oil and natural gas continuously degrade pipeline integrity, weaken structural strength, and threaten operational safety. Jiangsu Zhongxin Pipe Sci-Tech Co., Ltd. (Zonpipe) delivers high-performance CRA solutions to safeguard your pipeline infrastructure, minimize costly repairs, reduce downtime, and prevent economic losses.
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Mechanical & Metallurgical Composite Pipes - Corrosion Solutions for the Chemical Industry
In petrochemical refineries, chemical plants, fine chemical facilities and storage & transportation systems, process media such as hydrogen sulfide (H₂S), carbon dioxide (CO₂), chloride ions, acid-base media, sulfides and high-temperature oil and gas will cause severe corrosion, erosion and material failure to the pipeline system. Traditional carbon steel pipelines are prone to leakage, short service life and frequent maintenance, which seriously affect production safety, equipment continuity and economic benefits.
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Warmly congratulate Jiangsu Zhongxin Pipe website on-line trial run!
189Jiangsu Zhongxin Green Pipe Technology Co., Ltd. was founded in 2004, is located in the capital of Jiangsu Province, Nanjing, the ancient capital of the six dynasties, Jiangning Hushu Industrial Zone. Is a focus on the production of stainless steel lined with composite steel pipe credit rating of AAA level of high-tech enterprises. The main products of Zhongxin Pipe Industry are used in urban water supply and drainage, fire fighting, HVAC, petroleum, petrochemical, coal chemical, hydrogen energy, water storage,...
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