3LPP COATED
Founded in 2013, Yantai Xinbaoshang Materials Technology Co., Ltd.
China's leading steel pipe manufacturer and supplier
Three-Layer Polypropylene Coating (3LPP Coating) is a highly efficient anti-corrosion technology widely used in the surface treatment of steel pipes to significantly enhance their durability, corrosion resistance, and service life. The coating system consists of three functional layers: the first layer is an epoxy primer, the second is a copolymer adhesive layer, and the third is a polypropylene top layer, together forming a robust multi-layer protective system.
The key advantages of 3LPP coating lie in its exceptional corrosion and high-temperature resistance. The epoxy primer provides excellent adhesion and cathodic protection, effectively isolating the steel pipe from moisture, oxygen, and other corrosive agents in the environment. The intermediate adhesive layer ensures a strong bond between the epoxy and polypropylene layers, preventing delamination. The polypropylene outer layer offers outstanding mechanical strength, impact resistance, and abrasion resistance, protecting the pipe from physical damage during transportation, installation, and operation. Furthermore, 3LPP coating exhibits remarkable chemical resistance and can continuously operate in temperatures up to 110°C, making it ideal for harsh applications such as high-temperature pipelines, chemical transportation, and subsea environments. It is highly resistant to a wide range of chemicals, including acids, alkalis, and salts, and is widely used in industries including oil and gas, chemical processing, municipal engineering, offshore projects, and heating pipelines.
In terms of application, the 3LPP coating process is mature and efficient, suitable for automated large-scale production. The uniform and consistent coating ensures long-term reliability for each steel pipe, greatly extending the service life of pipeline systems and reducing lifecycle maintenance costs. With growing demands in the energy sector and special pipeline applications, 3LPP coating has become the preferred anti-corrosion solution for high-temperature, high-pressure, and highly corrosive environments.
We operate three modern warehouses and processing plants in Yantai, Shandong and Cangzhou, Hebei, with a total storage area of 20,000 square meters and a year-round inventory capacity of 35,000 tons. Equipped with state-of-the-art processing lines and inspection equipment, we can meet your customization needs and quality requirements. Beyond standard processing services like beveled ends, painting, and packaging, our facilities offer precision manufacturing solutions including hot-dip galvanizing, epoxy coating, CNC drilling, and laser cutting. Every product undergoes rigorous quality inspection after processing to ensure it exceeds contractual and industry standards.
FAQs
We have no minimum order quantity requirements. Even if you only need one steel pipe or one pipe fitting, we can deliver on time and provide comprehensive services. Please note that certain high-grade steel products may require temporary production scheduling, which may result in minimum order quantity requirements. For specific details, please consult our sales team.
Of course, we provide free samples for products priced below $1,000. You only need to cover the shipping costs. For products priced above $1,000, please contact our sales team to discuss specific fees.
For products that are in stock, we will complete the final processing, quality inspection, packaging, and other steps within two weeks and deliver them as soon as possible according to the shipping schedule. For products that need to be ordered for production, an additional 2-3 weeks of production time will be required depending on the quantity requested.
In addition to providing factory warranty certificates, we can also provide test reports from internationally recognized quality testing agencies such as SGS, TUV, and DNV upon customer request. We are also available to assist third-party testing agencies with process inspections and final inspections prior to shipment.
Of course! Whether it's our own factory, processing plant, or our partners' factories, we welcome you to visit and exchange ideas at any time. If you need our assistance with visa matters, please feel free to contact our sales manager.
We are both a supplier and a manufacturer. We have three processing plants and warehouses, as well as a seamless steel pipe factory. We also collaborate closely with other outstanding steel pipe and pipe fitting factories in China, enabling us to offer a wide range of product specifications and a complete product system.
The delivery of the product is just the beginning of our service. If you encounter any issues during use, please feel free to contact our online customer service team at any time, and we will address the matter promptly. Additionally, we have offices in Hong Kong, Thailand, and Malaysia, enabling us to provide on-site technical support as needed.
Resource integration and supply chain capabilities are our core strengths. We offer a wide range of product specifications and numerous product types. At the same time, our inventory and processing capabilities ensure the fastest delivery times. We also provide professional customized solutions and comprehensive after-sales service.
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A comprehensive supply chain system and resource integration capabilities are our core strengths. By establishing long-term, in-depth partnerships with numerous outstanding factories, we have built a complete product system, ensuring that you can purchase all supporting products in one place, thereby saving a significant amount of time and cost. With our deep understanding of the local market and long-term, stable procurement volume, we are able to provide the highest quality products at the same price point, helping you maintain a competitive edge in the fiercely competitive market.
We have a professional team of more than 20 people and extensive experience in international projects. We can tailor solutions to your specific needs and provide quick quotes. We have three leading steel pipe product processing plants in Yantai, Shandong and Cangzhou, Hebei, which can meet all your deep processing and customization needs.
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Quality is our core principle. All products undergo comprehensive quality inspections before leaving the factory. After being stored in our warehouse, we conduct rigorous secondary quality inspections and can provide specified quality inspection plans according to customer requirements. We ensure that our product quality far exceeds contract standards and international standards.
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With a standing inventory capacity of 35,000 tons and a leading supply chain advantage, we achieve the fastest delivery times in the industry. We have offices in Hong Kong, Thailand, and Malaysia to ensure timely after-sales support for our customers. Our goal is to establish long-term partnerships with our customers, grow together, and create greater value.
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We have compiled a stainless steel standard comparison chart to help you clearly compare standards across different countries, enabling you to make more informed decisions when selecting materials.
In diverse application scenarios and operating conditions, the selection of piping materials is critical to structural strength and project durability. Black iron pipes and black steel pipes are two of the most common types of piping, widely used in various engineering projects. Despite their similar names, they differ in material composition, intended applications, and performance characteristics. This article will explore the definitions and properties of black iron pipes and black steel pipes, providing a comprehensive comparison between them.
In the global steel pipe industry, China has emerged as the world’s largest producer and exporter of steel pipes, leveraging consistent quality, competitive pricing, and extensive product offerings. According to statistics, China’s annual steel pipe production exceeded 1 billion tons by 2024. Chinese steel pipe manufacturers not only meet domestic demand but also supply premium products to international markets. This article highlights China’s top five leading steel pipe manufacturers and suppliers, focusing on their technological advantages, production capacity, and product ranges.
We have successfully fulfilled a 1,000-ton order for seamless steel pipes from our South Korean client. The customer has expressed high praise for our product quality and delivery speed, further solidifying our cooperative relationship.
We have compiled a stainless steel standard comparison chart to help you clearly compare standards across different countries, enabling you to make more informed decisions when selecting materials.
In diverse application scenarios and operating conditions, the selection of piping materials is critical to structural strength and project durability. Black iron pipes and black steel pipes are two of the most common types of piping, widely used in various engineering projects. Despite their similar names, they differ in material composition, intended applications, and performance characteristics. This article will explore the definitions and properties of black iron pipes and black steel pipes, providing a comprehensive comparison between them.
In the global steel pipe industry, China has emerged as the world’s largest producer and exporter of steel pipes, leveraging consistent quality, competitive pricing, and extensive product offerings. According to statistics, China’s annual steel pipe production exceeded 1 billion tons by 2024. Chinese steel pipe manufacturers not only meet domestic demand but also supply premium products to international markets. This article highlights China’s top five leading steel pipe manufacturers and suppliers, focusing on their technological advantages, production capacity, and product ranges.
In steel pipe specifications and dimensions, Schedule (SCH) denotes the pipe wall thickness, serving as a key factor in determining the pipe’s pressure rating and strength. A higher Schedule number indicates thicker pipe walls and greater pressure-bearing capacity.
We have successfully fulfilled a 1,000-ton order for seamless steel pipes from our South Korean client. The customer has expressed high praise for our product quality and delivery speed, further solidifying our cooperative relationship.
On the occasion of the National Day and Mid-Autumn Festival double holiday, Yantai Xinbaoshang expressed gratitude and care for its employees through heartwarming activities and special benefits, uniting the team to jointly wish our nation prosperity and a bright future.
We successfully secured a 500-ton order for seamless steel pipes with our Turkmenistan client. Through efficient land transportation, the shipment was delivered smoothly. The client highly praised our product quality and service, further solidifying our long-term cooperative relationship.
On September 3, 2025, Xinbaoshang Company hosted a warm birthday celebration for Jessica, showcasing our “people-oriented” corporate culture. We wish her both professional and personal success in the coming year!
Our steel pipe products have been widely used in major energy projects around the world, serving international energy giants, including China National Petroleum Corporation, Sinopec, Shell, Total, as well as national oil companies from countries such as Kuwait, Azerbaijan, Abu Dhabi, Qatar, Algeria, and Saudi Arabia. We have accumulated rich experience in international project services.
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