About Us

The company boasts a mature, modern management system and a professional, highly efficient service team. Comprising members with extensive industry experience and professional expertise, the team is capable of providing clients with end-to-end services-ranging from product selection and solution design to logistics distribution and after-sales support. Leveraging its robust technical capabilities and comprehensive service infrastructure, Gangyuanlong Building Materials has forged long-term, stable strategic partnerships with numerous renowned state-owned enterprises, central enterprises, and private firms. Having accumulated extensive experience in collaborating on large-scale projects, the company has emerged as the preferred partner among a vast array of material suppliers.

Driven by a professional team, formidable capabilities, and a profound sense of responsibility, Gangyuanlong Building Materials remains steadfastly customer-oriented, grounded in quality, and bound by integrity. Committed to creating greater value for its partners, the company stands as the definitive choice for all material procurement needs.

Our represented brand for piping is Juncheng. With its manufacturing facility located in Tianjin, China, Juncheng is a large-scale pipe manufacturing group that integrates R&D, production, sales, and service. Ranked among China's Top 500 Manufacturing Enterprises, the Group operates over 80 comprehensive production lines covering a full spectrum of pipe products-including hot-dip galvanized pipes, straight-seam welded pipes, steel-plastic composite pipes, spiral welded pipes, and square and rectangular pipes. With an annual manufacturing capacity exceeding 5 million tons, the Group's products comply with rigorous domestic and international standards. A premier supplier to sectors such as natural gas, fire protection, and new energy, Juncheng has established long-term cooperative partnerships with numerous state-owned and central enterprises.

Our represented brand for pipe fittings is Jianzhi. Located in Hebei, China, Jianzhi is a major pipe fittings manufacturer integrating R&D, production, and sales. Recognized as a National High-tech Enterprise, it serves as the Chair Unit of the Pipe Fittings and Valve Castings Branch of the China Foundry Association. The company boasts an annual output of over 300, 000 tons across a diverse product range-including malleable iron fittings, grooved pipe couplings, plastic-lined fittings, and power line hardware-catering to the specific needs of fire protection, water supply and drainage, HVAC, and natural gas sectors. Jianzhi's products have obtained numerous authoritative international certifications-such as UL (USA), CE (EU), BSI (UK), and SNI (Indonesia)-and strictly adhere to both domestic and international industry standards. Widely sold across various provinces and municipalities throughout China, the products are also exported to over 130 countries and regions worldwide, including Southeast Asia, Europe, Africa, and South America; notably, the company has provided products for major engineering projects such as the Beijing Olympic Games.

The business scope of Shenzhen Gangyuanlong Building Materials Co., Ltd. includes: pipes, pipe fittings, plumbing valves, fire safety equipment, structural profiles, steel plates, and more. Our product range comprises:

Juncheng Galvanized Steel Pipe: Qualifications, Certifications, and Patents

I. International Qualifications and Certifications (Core)

1. The Americas: API 5L Gas Pipe Certification, ASTM A53 Standard Certification.

2. Europe: EU CE Certification; UK BS 1387 and UKCA Certifications.

3. Third-Party Recognition: SGS Testing and Certification, meeting the import and export quality requirements of multiple nations.

 

II. Green and Environmental Certifications & Reports

1. System Certifications: ISO 9001 Quality Management, ISO 14001 Environmental Management, and Energy Management System Certifications.

2. Green Credentials: National-Level "Green Factory" Designation, Green Building Materials Certification, and Green Design Product Certification.

3. Environmental Reports: Carbon Footprint Report, Clean Production Audit Report, and Emissions Compliance Report.

 

III. Key Domestic Qualifications

Special Equipment Manufacturing License, Drinking Water Hygiene and Safety License, Safety Mark for Mining Products; Ranked among China's Top 500 Manufacturing Enterprises and China's Top 500 Private Manufacturing Enterprises.

 

IV. Patents and Technological Achievements

Patent Portfolio: Over 100 national patents, covering steel pipe manufacturing processes, anti-corrosion technologies, and more.

Standard Development: Participated in the formulation and revision of over 20 national standards, including GB/T 3091 and GB/T 13793.

Jianzhi Fittings (Hebei Jianzhi Casting Group) - Core Qualifications, Certifications, and Patents:

I. International Quality Certifications (Core)

The Americas: USA UL Certification, USA FM Certification.

Europe: EU CE Certification, UK BSI Certification, UKCA Certification.

Other International: Brazil ABNT Certification, Turkey TSE Certification, Indonesia SNI Certification, SGS Certification.

 

II. Management Systems and Green Environmental Certifications

Management Systems: ISO 9001 (Quality), ISO 14001 (Environment), Occupational Health and Safety, After-Sales Service, and Energy Management System Certifications.

Green Credentials: National-Level Green Factory, 6th China Green Foundry Enterprise, Green Building Materials Certification.

Specific Environmental Compliance: Possesses relevant environmental reports, including compliance with pollutant discharge regulations.

 

III. Key Domestic Qualifications

Credentials & Honors: National High-Tech Enterprise, China Well-Known Trademark, Provincial-Level Enterprise Technology Center, Hebei Province "Single-Champion" Demonstration Enterprise, AAA-Level Credit Enterprise.

Product Certifications: Ministry of Public Security CCC Certification.

 

IV. Patents and Technological Achievements

Patents: Holds over 100 accumulated national patents, including both invention patents and utility model patents-such as the "Portable Pipe Fitting Angle Detection Device and Accessories" (granted in 2009).

Standard Formulation & Revision: Participated in the formulation and/or revision of over 20 national, industry, and group standards-including GB/T 3287 *Malleable Cast Iron Pipe Fittings* and GB/T 9440 *Malleable Cast Iron Castings*.

Technological Honors: The JSS-12 Energy-Saving Annealing Furnace and the "New-Type Malleable Iron Pipe Fittings" were designated as "National Key New Products, " and the company has received multiple provincial and ministerial-level awards for scientific and technological progress.

Juncheng Galvanized Steel Pipe Factory is equipped with a diverse range of modern production lines and precision machinery. These include 16 hot-dip galvanizing lines, 20 straight-seam welded pipe lines, as well as lines for spiral-welded pipes, square and rectangular tubes, and steel-plastic composite pipes. The facility features a comprehensive suite of core forming and galvanizing equipment-such as fully automated hot-dip tanks, induction heating furnaces, and submerged arc welding machines-alongside precision finishing and testing instruments, including optical emission spectrometers and salt spray test chambers. Furthermore, the plant is fully outfitted with auxiliary equipment for processes such as pickling, phosphating, drying, and packaging, thereby covering the entire production and inspection lifecycle of its piping products.

Jianzhi Fittings boasts world-class, fully automated production lines. For molding, the facility utilizes state-of-the-art automated lines from DISA, Dongjiu, and Sintokogio, paired with FADIK variable-frequency rotor sand mixers to ensure the utmost precision in sand mold formation. Melting operations are conducted using eco-friendly electric furnaces, supported by German-made Constand QC direct-reading spectrometers and high-frequency infrared carbon-sulfur analyzers to enable real-time monitoring of molten iron composition. Heat treatment is performed in tunnel-type annealing kilns, ensuring both stability and high efficiency. The machining workshop features a comprehensive array of over 20 CNC milling machines, specialized machine tools, and wire-cutting equipment. Additionally, the facility houses new galvanizing lines, airtightness testing equipment, digital projectors, and other advanced systems, enabling intelligent inspection and quality traceability throughout the entire production process.

Our sales network covers most provinces and regions across China-with a primary focus on the South China region-and extends to markets in the United States, Southeast Asia, the Middle East, and Africa. Our annual turnover stands at approximately 100 million.

We provide specialized services across a comprehensive range of products, including galvanized steel pipes, seamless steel pipes, pipe fittings, plumbing valves, fire safety equipment, and structural profiles and plates: