Henan Shuangzhong Intelligent Technology Co. , Ltd. expands global reach with record-breaking export of ASTM A333 Grade 6 seamless steel pipe
Over 2,500 tonnes of low-temperature seamless pipe shipped to major LNG receiving station project, reinforcing the company's position as a trusted global supplier.
The consignment comprises NPS 1/2 inch to NPS 24 inch ASTM A333 Grade 6 seamless pipe in multiple schedules, with each piece accompanied by an EN 10204 Type 3.1 mill test certificate documenting chemical composition, mechanical properties, and Charpy V-notch impact results at -45 °C. To meet the project's strict quality requirements, every heat was independently verified by [Third-party inspection body], with the inspection witnessed from steelmaking through final dimensional and hydrostatic testing. The pipe was produced under a documented normalising heat-treatment regime and packaged in hexagonal bundles with full heat-number traceability from mill to port.
LNG receiving stations demand the highest standards of low-temperature toughness, documentation discipline, and on-time delivery. The successful execution of this order demonstrates our capability to serve demanding energy projects at scale. The company's manufacturing facilities are equipped with hot-piercing mills, cold-drawing lines, in-house heat-treatment furnaces, and a fully accredited testing laboratory, allowing end-to-end control over quality and lead time.
This shipment represents more than a commercial transaction - it represents trust. Our customer is building critical infrastructure that will operate for decades at cryogenic temperatures. The fact that they chose us to supply the pipe body, with full third-party verification, reflects the reliability of our manufacturing system and the dedication of our team. We are proud to contribute to the safe and efficient delivery of clean energy.
In the past three years, Henan Shuangzhong Intelligent Technology Co. , Ltd. has shipped ASTM A333 Grade 6 pipe to customers across [Asia / the Middle East / Europe / Africa / the Americas], supporting applications in LNG receiving terminals, air separation units, petrochemical complexes, refinery low-temperature sections, and offshore platforms.
The company maintains a comprehensive certification portfolio including ISO 9001 Quality Management System, ISO 14001 Environmental Management, ISO 45001 Occupational Health and Safety, the PED 2014/68/EU Pressure Equipment Directive certificate for the European market, and project-specific qualifications from major EPC contractors and third-party inspection bodies including [SGS / BV / TUV / DNV / CCS].
Building on this milestone, Henan Shuangzhong Intelligent Technology Co. , Ltd. plans to further expand its low-temperature pipe production capacity in 2026, with investments in additional heat-treatment furnaces, automated ultrasonic testing lines, and an upgraded laboratory for Charpy impact testing. The company is committed to maintaining its position as a preferred global supplier for critical low-temperature applications, with a clear focus on quality, traceability, and on-time delivery.
Founded in 1999, Henan Shuangzhong Intelligent Technology Co. , Ltd. is a specialised manufacturer and global exporter of seamless steel pipe for low-temperature, high-temperature, and corrosion-resistant service. The company's product portfolio covers ASTM A333, A106, A335, A671, and API 5L specifications, with annual production capacity exceeding 3500000 tonnes. With customers in man countries and a commitment to continuous improvement, the company serves as a reliable partner for the world's most demanding infrastructure projects.
