GRIN.GRIN was established on July 23, 2014, with its registered office in Loudi City, Hunan Province. As a high-tech enterprise, it integrates R&D of novel stainless steel materials, application research of stainless steel, production of industrial stainless steel welded pipes, and manufacturing, sales, and service of seawater desalination equipment and high-end heat exchange equipment. The company primarily manufactures industrial welded pipes and high-efficiency heat transfer tubes using various corrosion-resistant materials, including austenitic, super austenitic, ultra-pure ferritic, and duplex steels. It also maintains industry-leading R&D and manufacturing capabilities in seawater desalination equipment and micro-high-efficiency heat exchangers. Currently, its products are exported to over 20 countries and regions, including the United States, Germany, the European Union, Russia, and Denmark. The company holds ISO9001 Quality Management System Certification, ISO14001 Environmental Management System Certification, and OHSAS18001 Occupational Health and Safety Management System Certification. It has also obtained Special Equipment Manufacturing Licenses, EU Pressure Equipment Directive (PED) Certification, and German Pressure Equipment (AD2000) Certification, and is a qualified supplier for the China National Nuclear Corporation (CNNC). Primary products include: high-efficiency heat exchange tubes, corrosion-resistant heat exchange tubes, fluid transport tubes, precision mechanical tubes, coils/bent tubes.
