About Laotie Steel
Since 2009 — CE & ISO certified steel structure manufacturer. 5 production lines, 5,000 tons/month, exporting to 30+ countries worldwide.
Who We Are
From Local Workshop to Global Supplier
Founded in 2009 in Shangqiu, Henan Province — in the heart of China's steel manufacturing hub — Laotie Steel Structure Co., Ltd. has grown from a local fabrication shop into a modern, fully-equipped steel structure manufacturer serving clients across 5 continents.
Our 20,000 square-meter factory houses 5 dedicated production lines with a combined monthly output of 5,000 metric tons. From raw steel plate to fully fabricated, surface-treated, and trial-assembled steel structures — every step happens under one roof, ensuring complete quality traceability.
With our Shenzhen office managing international client relationships, we combine the manufacturing expertise of central China with the logistics and communication advantages of a tier-1 global port city. All products are CE (EN 1090-1), ISO 9001:2015, IAF, and Made-in-China Supplier Assessed certified.
Our in-house engineering team uses Tekla Structures, SkyCiv, and PKPM to deliver code-compliant structural calculations and detailed fabrication drawings for every project — whether it's a 500 sqm workshop or a 30,000 sqm logistics center.
Our Factory
Production Equipment & Technology
Advanced machinery and certified processes ensure every steel member meets international quality standards.
CNC Plasma/Flame Cutting Machines
Max plate thickness 100mm, accuracy ±0.5mm
H-Beam Assembly Machines
Automatic web-flange alignment, max flange width 800mm
Submerged Arc Welding (SAW) Lines
Twin-wire SAW, certified welders per AWS D1.1
H-Beam Straightening Presses
Correction to within 1/1000 of member length
Shot Blasting Chambers
Through-type, SA 2.5 surface preparation
Automatic Spray Painting Lines
Epoxy zinc-rich primer + PU top coat, DFT 240μm
CNC Drilling & Milling Centers
Multi-axis, hole position tolerance ±0.2mm
Overhead Cranes
5T–32T capacity, covering all production bays
Quality Assurance
6-Stage Quality Control
Every steel member passes through 6 inspection gates before shipment. Third-party inspection by SGS, BV, or TÜV available on request.
Incoming Material
Mill certificates verified for every steel coil & plate. Spectrometer chemical analysis on random samples.
Cutting & Drilling
Dimensional inspection — length ±1mm, hole position ±0.2mm. 100% first-piece check per batch.
Assembly & Welding
Weld procedure qualification (WPQ) per AWS D1.1. Ultrasonic testing (UT) on all full-penetration welds.
Straightening & Correction
Straightness tolerance ≤ 1/1000. Visual + dial gauge inspection on every member.
Surface Treatment
Surface cleanliness SA 2.5 per ISO 8501-1. Dry film thickness (DFT) measured to specification.
Pre-Shipment
Trial assembly of main frame components. Packing list verification. Container loading supervision.
How We Build
Production Workflow
5-step manufacturing process, from raw steel to finished structure
Material Cutting
CNC plasma/flame cutting with ±0.5mm precision
H-Beam Assembly
Automatic alignment of web, flange & stiffeners
Welding
SAW by AWS D1.1 certified welders, UT tested
Straightening
H-beam correction to ≤ 1/1000 of member length
Blasting & Coating
SA 2.5 surface, epoxy primer + PU top coat
Our Journey
Company Milestones
The People
Meet Our Team
Kang Guangjian
General Manager
15+ years steel industry experience, oversees all international operations
Engineering Department
12 Senior Engineers
Tekla Structures, SkyCiv, PKPM — code-compliant designs for any region
Production Department
200+ Skilled Workers
AWS/ISO-certified welders, CNC operators, QC inspectors on every shift
International Sales
8 B2B Export Specialists
Fluent in English, French, Arabic, and Spanish — covering 5 continents
Ready to Start Your Project?
Send us your requirements — we'll provide a detailed quotation with structural calculations within 24 hours.