High Temperature Rubber Expansion Joint

The high temperature rubber expansion joint is a flexible compensation component specifically developed by us for high-temperature working conditions such as heating pipe networks, high-temperature steam pipelines, and industrial cooling systems. Ordinary rubber joints are prone to problems such as rubber layer hardening, cracking, and elasticity attenuation under continuous high-temperature environments, with service life greatly shortened. The high temperature rubber expansion joint adopts a high-temperature resistant special rubber formula, combined with a multi-layer high-temperature resistant fiber cord framework molded and vulcanized in one piece, capable of long-term stable operation in the extreme temperature range of -30°C to +150°C, with short-term temperature resistance up to 180°C, perfectly solving the industry pain point of rapid failure of conventional rubber joints under high-temperature working conditions. The product can efficiently absorb axial expansion and contraction displacement generated by heating pipelines due to drastic temperature changes, buffer vibration brought by high-temperature water pumps and heat exchange equipment operation, and reduce the probability of leakage and cracking at flange welds and valve interfaces caused by repeated thermal stress pulling from the source.

Our factory has over 20 years of R&D and manufacturing experience in rubber expansion joints. We have continuously iterated and optimized the high-temperature resistant rubber compound formula for high temperature rubber expansion joints. The internal cord layer uses high-temperature resistant aramid fiber instead of conventional nylon material, increasing the tensile strength retention rate at high temperatures by more than 40%. The product nominal diameter covers DN25-DN1200, with working pressure PN6-PN25, meeting the operational needs of the vast majority of heating and high-temperature industrial pipelines. The rubber material can be selected from high-temperature resistant EPDM, butyl rubber, or silicone rubber solutions according to medium temperature and characteristics, adapting to different medium conveying scenarios such as high-temperature hot water, saturated steam, and heat transfer oil. Flanges are fully compatible with the four major international standards of DIN, ANSI, GB, and JIS, with flange materials available in multiple grades including carbon steel, SS304, and SS316. For overseas heating engineering contractors and distributors, we support customization of special nominal diameters, lengths, and temperature resistance grades according to project drawings, and can provide a full set of thermal aging test reports and material certificates with the goods. Currently, high temperature rubber expansion joints have been applied in batches to urban central heating main networks, power plant high-temperature cooling systems, chemical plant area heat transfer oil pipelines, and other projects. Products are exported to over 80 countries and regions worldwide, and with stable high-temperature resistance and long service life, they have become designated supporting products for numerous overseas heating engineering contractors.

The product is widely used in urban central heating pipe networks, power plant high-temperature cooling systems, chemical plant area heat transfer oil pipelines, industrial boiler steam pipelines, printing and dyeing plant high-temperature hot water circulation systems, paper mill steam conveying pipelines, and other high-temperature working condition scenarios. It can be matched with high-temperature water pumps, heat exchangers, boilers, valves, and other equipment to achieve vibration damping and thermal displacement compensation.

We are one of the earliest domestic manufacturers engaged in high-temperature resistant pipeline flexible components, with over 20 years of industry experience and technical accumulation. Our factory covers an area of 10,000 square meters and is equipped with a complete set of rubber mixing, high-temperature molding, flange processing, and testing equipment, enabling full-process in-house production of high-temperature rubber expansion joints. The factory has a professional team of over 50 people, including multiple rubber formula engineers with more than 10 years of experience, with a monthly production capacity of 15-20 standard containers. We can handle both large-batch regular orders and quickly respond to customized project needs. Our products are exported to over 80 countries and regions worldwide, and we are familiar with the heating engineering standards and working condition characteristics of different regions, providing highly adaptable products and supporting services for overseas distributors and engineering contractors.

We offer full-chain personalized customization services. We can adjust the overall product length, sphere wall thickness, and flange bolt hole layout according to engineering drawings provided by customers. For ultra-high-temperature and strongly corrosive working conditions, we can individually formulate rubber compounds to create special rubber compound structures resistant to temperatures above 180°C. We support printing customers' own brand LOGOs and customizing exclusive outer packaging cartons and labels. Special structures such as reducer extensions and thickened pressure-bearing designs can all be independently molded for production. The customized sample development cycle is controlled at 15-20 days, and small-batch mixed orders in the industry can also be flexibly accepted, with a minimum order quantity of only 10 pieces, lowering the trial order threshold for overseas distributors. For long-term cooperating major customers, we can provide free product drawings, technical manuals, and working condition selection solutions, assisting distributors in building their own differentiated product matrix and escaping homogeneous low-price competition.

For regular standard in-stock products, a 30% advance payment is required, with the remaining 70% balance settled before shipment. For customized products requiring mold opening or special high-temperature resistant formula, a 50% advance deposit is required, with the balance fully settled before shipment. For single full-container large-batch purchases, tiered purchase discounts can be applied, with greater unit price discounts for larger purchase quantities. We support multi-currency cross-border settlement in US dollars, euros, British pounds, and RMB. Trade terms can be selected from EXW (Ex Works), FOB (Free On Board), and C&F (Cost and Freight), flexibly adapting to the trade operation habits of different overseas customers.

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