Yinglong provides integrated metal fabrication and delivery services for overseas engineering contractors, equipment manufacturers, and project owners. We take your project from detailed drawing refinement all the way through fabrication and final shipment, keeping every stage of production coordinated and controlled. With experience in structural steel and heavy metal fabrication, we execute projects in accordance with applicable international standards, supporting controlled quality, reliable delivery, and efficient on-site installation.
Drawing Detailing
Our engineering team uses 3D modeling software to develop detailed production drawings based on project specifications. Through digital modeling and drawing refinement, potential design deviations are identified early, helping reduce rework risk and improve fabrication accuracy.
Metal Cutting
We carry out precision cutting of structural sections and steel plates using laser, plasma, and flame cutting processes, selected according to material type and thickness. The facility supports efficient processing of both profiles and heavy plates, with automated slag removal equipment in place to help maintain cut quality and surface consistency before downstream fabrication.
Metal Forming
Our facility is equipped with assembly machines, straightening machines, press brakes, plate rolling machines, and profile bending equipment to support a wide range of structural forming requirements. A 900-ton press and dedicated forming machines for electrolytic cell hood panels further enable the fabrication of heavy and specialized metal components across different project applications.
Metal Welding
We perform structural fit-up and welding in accordance with project-specific requirements and applicable international standards, including AWS D1.1/D1.2/D1.6, AS 1554.1, AS 1665, EN ISO 3834, and CSA W47.1. Our welding processes cover GMAW, SAW, GTAW, FCAW, SMAW, LBW, RSW, and ASW, allowing us to select suitable techniques based on material type, structural configuration, and project specifications.
To improve consistency and efficiency, our manufacturing facility is equipped with automated and semi-automated robotic welding systems, supporting controlled weld quality and safer production environments.
Metal Machining
We operate conventional machining equipment including lathes, milling machines, drilling machines, and punching machines to support pre-assembly preparation and standard precision machining of structural components. For projects requiring higher precision or more complex machining, we coordinate with established local machining partners to complete detailed processing as needed. We offer out clients cost-effective, integrated fabrication solutions while maintaining project efficiency.
Trial Assembly of Fabricated Components
The purpose of trial assembly is to ensure accurate and efficient on-site installation. As a major step for quality control, we focus on the following aspects:
- Dimensional verification: Checking interface alignment between components, bolt hole positioning, and overall dimensional accuracy to confirm compliance with design specifications.
- Connection inspection: Reviewing weld joint preparation, bolt fit-up, and friction surface conditions to identify and resolve potential misalignment or interference before shipment.
- Geometric tolerance control: Monitoring critical tolerances such as straightness and verticality during pre-assembly to help maintain installation precision at site.
Surface Treatment and Corrosion Protection (Sandblasting, Painting, and Hot-Dip Galvanizing)
We operate automated conveyor-type blasting equipment measuring 2.8 m × 2.8 m × 50 m, along with a 10 m × 10 m × 30 m manual blasting chamber to accommodate large structural components. Abrasive materials are selected according to substrate type: high-speed steel shot is used for carbon steel, while garnet abrasive is applied to stainless steel and aluminum to maintain surface integrity and ensure appropriate cleanliness prior to coating application.
As the final stage of fabrication, surface treatment plays a key role in long-term durability. Coating works are carried out in accordance with established process controls, with monitoring of temperature, humidity, dew point, application intervals, and coating thickness to maintain consistency across multi-layer paint systems.
When project requirements exceed conventional coating performance, hot-dip galvanizing (HDG) provides an alternative corrosion protection method. During the process, a durable alloy coating is formed that helps resist corrosion in demanding environments. In many applications, HDG offers long service life with reduced maintenance compared to thick multi-layer paint systems.
Shot Blasting & Sandblasting Inspection
Coating Inspection
Galvanizing Inspection
Inspection and Testing
Upon completion of welding and prior to surface treatment, critical inspection hold points are established to verify product conformity. The following inspections and tests are carried out as required:
- Dimensional inspection: Verification of length, width, height, angles, curvature, flatness, concentricity, and other key measurements to ensure compliance with drawings and specified tolerances.
- Visual inspection: Examination for weld spatter, slag residue, improper weld profiles, surface damage, and visible defects such as cracks, porosity, or undercut.
- Non-destructive testing (NDT): Application of methods such as MT, UT, PT, and RT, where specified, to confirm weld quality.
- Special testing: Execution of air-tightness tests, load tests, or destructive testing in accordance with project specifications and Inspection and Test Plans (ITP).
All inspections are conducted by certified personnel. Clients may establish witness points within the ITP or appoint independent third-party inspectors to further enhance verification transparency and confidence.
Identification and Traceability Systems
To support efficient component tracking and site coordination, we provide structured identification and traceability solutions throughout the fabrication process. A range of physical marking methods is applied as required, including stamped markings, spray identification, paint coding, engraved labels, and welded tags. Digital traceability methods such as barcodes, QR codes, and laser marking are also used to improve component tracking and documentation control. For large-scale or complex projects, RFID systems can be implemented when specified to enhance tracking accuracy and logistics coordination.
Packaging and Transportation
Comprehensive Packaging Solutions
Whether shipment is arranged by containerized multimodal transport or break-bulk cargo, we provide packaging solutions suited to project requirements. We use protective measures like customized steel pallets, edge protection, treated timber supports, cushioning materials, ratchet tie-down straps, and turnbuckle tensioning systems to help ensure stability and protection during transit.
Global Logistics Coordination
We support coordinated logistics planning to facilitate smooth shipment. Services may include freight quotation assistance, vessel booking coordination, contract documentation review, insurance arrangement, customs declaration support, and preparation of commercial documents such as invoices, packing lists, bills of lading, and certificates of origin. Available transport methods include standard containers, high-cube containers, extended-length containers, flat racks, and break bulk shipment, selected according to cargo dimensions and project requirements.
Why Choose Yinglong
- A project management team with strong technical backgrounds and extensive industry experience, ensuring structured coordination from engineering through delivery.
- Proven experience in structural steel and plate fabrication projects, executed with disciplined process control and attention to specification requirements.
- A skilled workforce of qualified and experienced welders supporting consistent fabrication quality.
- An established quality, environmental, and health & safety management system governing daily operations.
- Workshop proximity to Qingdao Port, facilitating efficient shipment of large and heavy steel structures.
- Long-standing working relationships with engineering consultants, EPC contractors, and project owners.
- Comprehensive in-house manufacturing facilities supported by a full range of production equipment.
- Dedicated blasting and painting facilities designed with environmental considerations.
- Experience in delivering structural steel fabrication and coating projects across multiple industries and international standards.
- A well-maintained working environment that includes green spaces and employee facilities to support a stable and responsible workplace culture.