A: Shenyang Zhongda Steel Structure Engineering Co., Ltd. (abbreviated as Zhongda Steel Structure) was established in 2004, located in Shenyang Economic and Technological Development Zone. It covers an area of 120,000 square meters with a construction area of 75,000 square meters. Its main business includes R&D, design, manufacturing, inspection, maintenance, and installation of various steel structures, with an annual production and construction capacity of 60,000 tons. Products are widely applied in fields such as building construction, highway/railway bridges, and equipment manufacturing. 

A: Zhongda holds Class I Steel Structure Specialized Contracting qualifications. It has passed evaluations for national high-tech enterprise, gazelle enterprise, and specialized & sophisticated enterprise with unique strengths. It has also obtained international certifications for quality (ISO 9001), occupational health and safety (ISO 45001), and environmental management (ISO 14001). Its steel structure products are listed in the "Liaoning Province High-Quality Development Industrial Product Catalog," and it was recognized as a "Liaoning Province Prefabricated Construction Industrial Base" in July 2020.

A: Zhongda is equipped with comprehensive production equipment, including CNC plasma cutting machines (max cutting thickness 300mm), flame CNC cutting machines, assembly machines, gantry automatic welding machines, 1,000-ton presses, shot blasting machines (plate/vertical types), and 100-ton overhead cranes. It has built the steel structure processing workshop with the largest lifting capacity in Northeast China, capable of meeting the processing needs of large steel bridges, building steel structures, and other projects.

A: The enterprise uses professional testing equipment, including levels, theodolites, total stations, ultrasonic flaw detectors, paint thickness gauges, and roughness measuring instruments. These cover full-process inspection during construction to ensure products meet quality standards.

A: Zhongda’s steel bridge projects span municipal, highway, and railway sectors. Examples include the Shenyang Dongta Cross-Hunhe River Bridge (steel box girder/composite girder/steel tower manufacturing, 18,000 tons), the Beijing-Harbin Expressway Shenshan Reconstruction Project (steel plate/steel box composite girder manufacturing, with a single标段 reaching 11,000 tons), and the Shengli Street Expressway Lanjun Road Cross-Railway Swivel Bridge (steel box girder manufacturing and installation, 4,400 tons). Projects are spread across Liaoning, Jilin, Inner Mongolia, and other regions.

A: Representative building steel structure projects include the Tiexi BMW LYDIA Factory Energy Center (20,000㎡), Northern Heavy Industries G Workshop (600,000㎡), Shenyang Locomotive Museum (3,300 tons), Dalian Station/Dalian North Station Platform Canopies (5,000 tons), and the Naiman Jing'an 1.29 Million Tons Stainless Steel Plant (20,000 tons). These cover industrial workshops, transportation hubs, commercial complexes, and other types.

A: Zhongda has established long-term cooperative relationships with major engineering bureaus of central enterprises such as China State Construction (CSC), China Railway (CREC), China Railway Construction (CRCC), China Communications Construction (CCCC), and China Metallurgical Group (MCC), serving as their qualified suppliers and strategic partners.

A: Zhongda has long collaborated deeply with well-known domestic design institutes and universities, participating in the formulation of multiple industry standards and specifications. It has a rational talent structure (management backbone + technical workers) and promotes the development of construction industrialization.

A: It has been awarded multiple honors by the government, such as "National High-Tech Enterprise," "Gazelle Enterprise," and "Specialized & Sophisticated Enterprise with Unique Strengths," and was recognized as a "Liaoning Province Prefabricated Construction Industrial Base."

A: Currently, Zhongda primarily focuses on the R&D, design, manufacturing, inspection, and maintenance of steel structure products and does not directly provide on-site installation services for overseas projects. Our core strength lies in high-quality product delivery and technical support."

A: We provide customers with a detailed Steel Structure Installation Manual, covering: Basic product parameters (e.g., steel component dimensions, material performance specifications such as Q345B);

Step-by-step installation guidance (including key processes like assembly, welding, and correction);

Tool and equipment lists (e.g., recommended welding machine models and crane tonnage);

Quality acceptance standards (referencing industry norms and Zhongda’s internal inspection requirements);

Common issue solutions (e.g., weld defects, anti-corrosion layer peeling). The manual is compiled based on industry standards participated in by Zhongda and years of engineering experience, ensuring operability."

A: The installation manual is included as part of product delivery and does not incur extra charges. It will be provided to customers alongside the products in electronic (PDF) and optional key-step paper formats.

A: Yes. If customers encounter technical questions during installation (e.g., complex node handling, equipment matching issues), they can reach Zhongda’s technical team via the customer service hotline or designated email. We will provide remote support (e.g., video guidance, drawing annotations) to assist in resolving issues.

A: During the product warranty period, quality issues caused by Zhongda’s manufacturing or design (e.g., material defects, processing errors) will be addressed according to contract terms. For issues resulting from improper installation (e.g., welding not following manual specifications), Zhongda can assist in assessment and provide repair solutions (with costs borne by the customer).