Built 500+ Steel Structures
Across 40+ Countries —
From Antarctic Stations to 229 m Coal Sheds

We are not a trading company. We are the design-build team behind airports, power plants, exhibition halls and industrial warehouses in 40+ countries. Since 1999, our 200,000T annual capacity, 6 special-grade qualifications and in-house engineering team deliver the structural steel your project needs — on specification, on schedule, with the documentation an international EPC expects.

Contact an engineer for a budget check, code review and delivery timeline before you commit to drawings.

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Proprietary Technology

Nine Structural Technology Systems

Most steel structure companies in China fabricate to your drawings. We go further: nine proprietary structural systems, each engineered to solve a specific building challenge that off-the-shelf solutions cannot.

Long-span spatial grid structure inside Guangzhou Baiyun Airport terminal

Long-span Spatial Grid Structure System

Bolted-sphere and welded-sphere space frames spanning 100m+ without interior columns. Ideal for stadiums, terminals, and exhibition halls where unobstructed space is non-negotiable.

Completed ultra-long-span beam-string enclosed coal shed with exposed steel arch structure

Ultra-long-span Beam-string Structure System

Prestressed cable-strut systems reaching 200m+ spans at a fraction of the steel weight. Proven on the world's longest-span coal shed at 229 meters.

Completed multi-storey residential building using a PEC steel-concrete composite system

Low-carbon PEC Integrated Residential System

Partially-encased steel-concrete composite columns that cut concrete usage by 40% while doubling construction speed. A green alternative for residential and hotel projects.

Multi-story high-rise all-steel building with exposed prefabricated steel frame

Multi-story & High-rise All-steel System

Fully prefabricated all-steel buildings up to 180m tall. Cross-shaped-to-box columns with thick-plate narrow-gap welding, assembled on-site in days, not months.

Large steel structure industrial workshop with clear-span roof frame

Steel Structure Industrial Building System

Custom-designed workshops, warehouses and plants with clear-span frames, crane runways and integrated envelope systems. From design to handover in weeks.

Low-rise light-steel residential cabins with modular pitched-roof units

Ultra-light Steel Integrated Residential System

Light-gauge steel framing for residential and light commercial buildings under six stories. Off-site manufactured, on-site assembled with zero wet trades.

Factory-fabricated modular steel station components staged for assembly

Modular Integrated Building System

Factory-built steel modules shipped to site and connected in days. Relocatable, stackable, and ideal for camps, hotels, and disaster-relief housing.

Large industrial facility roof arranged with photovoltaic arrays and metal roof envelope

Metal Roof BIPV Technology System

Standing-seam metal roofing with integrated photovoltaic cells. Generate clean power while protecting your building envelope. Dual-function, single-installation.

Prefabricated covered steel pedestrian bridge with shop-fabricated truss segments

Prefabricated Steel Structure Bridge System

Steel truss and box-girder bridges for highways, railways and pedestrians. Shop-fabricated to millimeter tolerance, transported and launched in pre-assembled segments.

Project Portfolio

Built for the World's Most Demanding Projects

Our steel structures have survived Antarctic blizzards, sheltered 250,000m² coal yards, and framed terminal roofs for international airports. Here are four that define what "Permanent" means.

Antarctic Ross Sea New Station steel structure project by Permanent Steel Structure Infrastructure

Antarctic Ross Sea New Station

China's first new-era year-round Antarctic research station, facing the Pacific sector. Steel structures engineered for extreme cold, wind and corrosion.

Guangzhou Baiyun International Airport Phase III expansion steel structure Infrastructure

Guangzhou Baiyun International Airport Phase III

Aviation terminal expansion featuring complex curved-roof steel grid structures. Precision fabrication meeting the highest aviation infrastructure standards.

World's longest-span 229m coal shed at Guodian Ningxia Fangjiazhuang Power Plant Industrial

China's First Qin-Style Two-Level Steel Landscape Bridge-Span Coal Shed (229m)

Guodian Ningxia Fangjiazhuang Power Plant enclosed coal shed. Prestressed beam-string arch truss, 229m clear span, approximately 4,000 tons of steel. The world's longest-span structure of its type.

Xuzhou High-speed Railway Station with 75m span steel grid roof structure Infrastructure

Xuzhou High-speed Railway Station

28,000m² station building, 130m wide and 228.5m long with a maximum 75m span. Orthogonal square-pyramid grid structure for unobstructed platform visibility.

Corporate Film

25 Years of Building the Impossible

From the 229-meter coal shed to Antarctic stations, see what a full-industry-chain steel structure manufacturer looks like from the inside — design, fabrication, logistics and on-site erection in one continuous workflow.

MP4, 720p | Duration: approx. 3 min

Why Permanent

What Sets Us Apart from Other Steel Structure Manufacturers in China

Most Chinese steel structure suppliers compete on price. We compete on capability, qualification and accountability. Here is what that means for your project.

Full-Industry-Chain Capability

One partner from the first CAD line to the final bolt tightening. Design, manufacturing, construction and operation & maintenance under one roof. No finger-pointing between subcontractors.

Six Special-Grade Licenses

Class-1 Building Construction General Contracting, Class-1 Steel Structure Specialized Contracting, Class-A Steel Structure Design, and three Special-Class Manufacturing licenses. The highest qualification portfolio in China's steel structure industry.

Intelligent CAD-CAM Production

Self-developed intelligent production lines for spatial grid structures. Advanced CAD-CAM technology seamlessly links design data directly to CNC equipment, eliminating manual interpretation errors.

Joint R&D with Shanghai Jiao Tong University

In 2023, we established the Research Center for Intelligent Construction of Spatial Steel Structures with Shanghai Jiao Tong University. Over 50 R&D engineers, 100+ patents, 30+ published standards.

Global Project Experience

Steel structures shipped and erected across four continents: Antarctica, Africa (Republic of the Congo), South Asia (Pakistan), and Southeast Asia (Indonesia). We understand international codes and logistics.

Complete Construction Technology Stack

Beyond fabrication: we master jacking, lifting, sliding and tensioning technologies. Multiple construction method patents cover the erection of complex spatial structures — the same methods that put the 229 m coal shed and the Antarctic station in place.

Licenses & Manufacturing Strength

Special-Grade Qualifications, Production Controls and Factory Capacity

Not every Chinese steel fabricator combines design, heavy fabrication and erection under one organization. Our domestic special-grade qualifications cover manufacturing, erection and design; the cards below also show the production equipment and capacity behind reliable delivery.

Automated submerged arc welding line for steel structure manufacturing

Steel Structure Manufacturing

Special-Class (Tier 1)

Power plant steel frame and crane erection site

Steel Structure Erection

Special-Class (Tier 1)

Structural engineering design drawings

Steel Structure Design

Class-A (Grade A)

Steel surface preparation and quality control equipment

Surface Preparation & QC

Shot Blasting and Inspection

Precision steel member straightening equipment for dimensional control

Member Dimensional Control

Fabrication Accuracy

Aerial view of our manufacturing campus showing stable production capacity and reliable long-term delivery base

Factory Capacity

Stable Supply Base

Honors & Memberships

Recognized by Government, Industry & Academia

These are not self-awards. Every badge below is issued by an independent government authority, industry association or recognized standards body after an on-site audit.

National Construction Industry 5A Credit Enterprise certification

National 5A Credit Enterprise

China Construction Industry Association

Top 100 Provincial Construction Enterprise award

Provincial Top 100 Enterprise

Jiangsu Provincial Government

Provincial Outstanding Steel Structure Enterprise award

Outstanding Steel Enterprise

Jiangsu Steel Structure Association

Shanghai Metal Structure Association member

Shanghai Metal Assoc. Member

Shanghai Metal Structure Assoc.

China Construction Industry Association member unit

CCA Member Unit

China Construction Industry Assoc.

Spatial Structure Council Member Unit certificate

Spatial Structure Council

China Steel Construction Society

Xuzhou Outstanding Construction Enterprise award

City Outstanding Enterprise

Xuzhou Municipal Government

Hope Project Love Enterprise charitable award

Hope Project Love Enterprise

China Youth Development Foundation

Ready to Start Your Steel Structure Project?

Send us your drawings, specifications or even a sketch. Our engineers will review and respond within 24 hours with a preliminary quotation and feasibility assessment.

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