Tianjin Lida Changji Technology Development Co., Ltd.
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Tianjin Lida Tube Co., Ltd.
🇨🇳 China
19922001-5000 peopleManufacturer/Trading CompanyHigh capacity factory
Established brand
Large enterprise group
Own brand
Description
Tianjin Lida Tube Co., Ltd., also known as Tianjin Lida Steel Pipe Group Co., Ltd., is a prominent manufacturer and trading company based in Tianjin, China, established in 1992. With a workforce ranging from 2,001 to 5,000 employees and annual sales revenue of nearly 5 billion yuan, the company specializes in the production and sale of a comprehensive range of steel pipes and related products. Their extensive product portfolio includes straight seam high-frequency welded pipes, hot-dip galvanized steel pipes, steel-plastic composite pipes, API casing, oil pipes, OCTG seamless pipes, line pipes, cylinder pipes, hydraulic support pipes, structural pipes, and slotted pipes. They also produce copper rods, PPGI, stainless steel seamless and welded pipes, and pipe fittings. Tianjin Lida Tube Co., Ltd. operates multiple production lines, including 10 for hot-dip galvanized steel pipes (600,000 tons/year), 11 for high-frequency welded pipes (800,000 tons/year), 6 for steel-plastic composite pipes (60,000 tons/year), and lines for oil casing pipes (200,000 tons/year). The company holds numerous certifications, including ISO 9001, ISO 9000, API 5L, and API 5CT, and its quality inspection center laboratory has passed National Laboratory Accreditation (CNAS). They emphasize technological innovation, automated equipment, and intelligent manufacturing, integrating advanced automation, AI-assisted design, smart logistics, and IoT monitoring. Their products serve diverse applications in mechanical manufacturing, steel structure engineering, construction projects, and infrastructure initiatives globally.
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Qinhuangdao Tonglida Environmental Protection Energy Co., Ltd.
🇨🇳 China
199851-100 peopleService Company/ManufacturerEstablished brand
High-tech enterprise
Own brand
ODM manufacturer
Key customer
CHINA AEROSPACE
Description
Qinhuangdao Tonglida Environmental Protection Energy Co., Ltd. is a professional manufacturer and service provider established in 1998, specializing in environmental water treatment and energy-saving solutions. Based in Qinhuangdao, China, the company operates as a high-tech enterprise integrating R&D, design, manufacturing, installation, and operation. With a workforce of 51 to 100 employees, they maintain a robust quality management system backed by ISO 9001, ISO 14001, and ISO 45001 certifications, alongside specialized qualifications for pressure vessel design and manufacturing (A1 and A2 levels).
Their comprehensive product portfolio includes industrial and rural water treatment systems such as reverse osmosis equipment, ultrafiltration units, integrated dosing devices, and sodium carbonate silos. Additionally, the company is a significant producer of heat exchangers, pressure vessels, nitrogen gas storage tanks, and anticorrosion products. Through its subsidiary, Liaoning Tonglida Technology Co., Ltd., the firm leverages advanced production facilities to serve diverse sectors including metallurgy, petrochemicals, and municipal engineering.
Tonglida has established a strong market presence by providing zero-discharge and reclaimed water reuse systems to high-profile clients such as Sinopec, PetroChina, and Shougang Group. Recognized as a "Specialized and Sophisticated" enterprise in Hebei Province, the company continues to focus on low-carbon technologies and solid waste reuse for both domestic and international markets.
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