Standing Seam Zip
65-430 Heat Resistant Zip Lock Standing Seam Metal Roof Sheet
- Profile Height: 65 mm Rib Pitch
- Effective Width: 430 mm Cover
- Fixing System: 360° Hidden Seam
Factory-direct high-tensile steel roofing profiles, insulated sandwich panels, and translucent daylighting assemblies engineered to meet Uzbekistan KMK 2.01.04-18 and GOST structural load requirements.
Analyzing thermal expansion differentials, seismic diaphragm shear stresses, and high UV solar reflectance in arid Central Asian climates.
Uzbekistan represents one of the world's most demanding climatic environments for light-gauge structural steel building envelopes. Located within the heart of Central Asia's endorheic continental zone, project sites across Tashkent, Samarkand, Bukhara, and the autonomous Republic of Karakalpakstan regularly experience surface ambient temperature swings from -28°C during severe winter arctic depressions to over +46°C in July. At the metal roof skin level, solar radiation absorption causes surface temperatures to exceed +82°C. This 110°C thermal delta introduces severe cyclical expansion and contraction stresses across long-span trapezoidal profiles, demanding rigorous engineering tolerances in fasteners, slotted purlin connections, and profile geometry.
When specifying trapezoidal roof sheets for industrial logistics complexes or pre-engineered steel buildings (PEBs) in Uzbekistan, structural engineers must adhere to national building codes KMK 2.01.04-18 (Thermal Engineering in Construction) and KMK 2.01.07-96 (Loads and Impacts). Single-skin profiles without proper side-lap sealant beads or with inadequate rib heights (under 32 mm) are prone to capillary water ingress during winter snow-melt phases and heavy spring downpours. Our trapezoidal roofing systems integrate deep 35 mm to 45 mm crest heights and engineered capillary grooves, preventing hydrostatic backflow under high gusting desert winds (up to 1.2 kPa wind load).
Technical Consideration: For single-run roof slopes exceeding 30 meters in the Navoi or Tashkent industrial zones, utilizing fixed-screw fastening on continuous trapezoidal sheets without intermediate expansion steps can cause fastener hole elongation and ovalization. We recommend step-pitch installations or zip-lock standing seam profiles with sliding concealed clips to accommodate axial elongation.
A critical engineering parameter in Uzbekistan is seismic zone safety. According to the updated seismic hazard maps of Central Asia (KMK 2.01.03-19), the majority of commercial and urban developments—including Tashkent and Namangan—are categorized within MSK-64 scale seismic zones 7, 8, and 9. In these zones, roof cladding must not merely act as an environmental envelope; it functions as a critical horizontal diaphragm transferring lateral wind and seismic shear forces into the primary moment-resisting steel portal frames.
The cold-formed trapezoidal profile achieves high in-plane shear stiffness via its repeating box ribs. Fabricated from high-tensile steel grades such as S350GD, S550GD, or ASTM A653 Grade 50/80, these sheets deliver an optimal strength-to-weight ratio (averaging only 4.8 to 7.2 kg/m² compared to traditional concrete deck or asbestos systems at 35–65 kg/m²). This massive mass reduction slashes the total inertial mass of the building, substantially diminishing base shear forces during seismic events and enabling lighter, more economical substructural foundations.
Furthermore, solar reflectance (SRI) plays a profound operational role. Utilizing PVDF or high-durability polyester (HDP) coatings in high-albedo colors (such as RAL 9002 White Gray or RAL 9003 Signal White) reflects over 74% of incident infrared solar radiation. This reduces inner plenum temperatures by up to 18°C, drastically curbing chiller loads in temperature-controlled agro-logistic and pharmaceutical warehouses.
| Profile Designation | Base Metal Thickness (BMT) | Yield Strength (fy) | Coating Specification | Allowable Purlin Span (1.5 kN/m² Live Load) | Seismic Diaphragm Shear Cap. (kN/m) |
|---|---|---|---|---|---|
| TR-35/207 Box Profile | 0.50 mm (Nominal) | 350 MPa | AZ150 Galvalume / Z275 | 1.80 m (Continuous Triple Span) | 3.45 kN/m |
| TR-35/207 Box Profile | 0.60 mm (Heavy Industrial) | 550 MPa | AZ150 / 25μm PVDF | 2.25 m (Continuous Triple Span) | 4.80 kN/m |
| TR-45/150 High-Rib Profile | 0.55 mm (Nominal) | 350 MPa | Z275 Galvanized / SMP | 2.40 m (Continuous Triple Span) | 5.10 kN/m |
| TR-45/150 High-Rib Profile | 0.70 mm (Severe Load) | 550 MPa | AZ150 / 35μm PVDF | 3.10 m (Continuous Triple Span) | 6.95 kN/m |
| Composite Rockwool Panel (100mm) | 0.50 / 0.50 mm Skins | 350 MPa Skins | AZ120 / Polyester 25μm | 4.50 m (Structural Span) | 8.20 kN/m |
From state-sponsored Special Economic Zones to heavy metallurgy and climate-controlled agro-processing facilities.
Ideal for multi-bay transshipment terminals, dry ports, and light manufacturing plants in Sergeli and "Technopark". Trapezoidal profiles provide rapid dry-assembly enclosing up to 4,000 m² per day while maintaining strict airtightness under positive pressure HVAC air filtration systems.
Designed for chemical processing facilities, gold extraction sites, and steel rolling mills. Utilizing AZ150 Galvalume and chemical-resistant UPVC multilayer sheets ensures structural survival against airborne acidic plumes, sulfur dioxide emissions, and harsh desert particulate abrasion.
Tailored for massive fruit-drying hubs, cotton spinning mills, and cold storage logistics complexes. Paired with non-combustible A1-rated Rockwool sandwich panels or composite anti-condensation fleece backings to prevent moisture dripping onto sensitive textile bobbins and agricultural yield.
Architectural applications including exhibition centers, transport interchanges, and modern retail markets. Dacra stone-coated metal roof tiles and custom-folded standing seam sheets offer refined aesthetics paired with 50-year maintenance-free durability resisting intense UV degradation.
Key socio-economic vectors transitioning the Uzbek construction sector toward high-efficiency prefabricated steel envelopes.
The construction sector of the Republic of Uzbekistan is witnessing an unprecedented transition powered by national initiatives under the "Strategy Uzbekistan - 2030". With substantial state-led capital investment in Free Economic Zones (FEZs), intermodal logistics infrastructure, and modernized agricultural processing, old Soviet-era building methods—characterized by monolithic reinforced concrete roofs, precast hollow-core slabs, and brittle chrysotile asbestos tiles—are being completely phased out due to structural weight, seismic vulnerability, and thermal inefficiencies.
A prime catalyst in this shift is the enforcement of modernized thermal insulation standards. With the state aggressively reforming industrial natural gas and electric energy tariffs, warehouse and industrial facility owners can no longer afford the immense heat loss through uninsulated building skins. As a direct consequence, demand for PIR (polyisocyanurate) and high-density Basalt Rockwool trapezoidal sandwich panels has spiked by over 34% year-on-year. General contractors in Tashkent and Chirchiq are demanding integrated systems where single-skin trapezoidal profiles for canopies seamlessly interface with matching insulated panels for conditioned main production bays.
Simultaneously, the modernization of industrial workshops has spurred adoption of energy-saving daylighting systems. Modern PEB designs mandate integrating UV-protected corrugated polycarbonate roof panels directly into the trapezoidal steel field. Matching profiles such as our 6mm trapezoidal polycarbonate panels allow daylight harvesting (82-88% light transmission with minimal solar heat gain), drastically reducing daily electrical lighting consumption across expansive assembly plants.
Combining 15+ years of factory manufacturing pedigree, high-speed automated roll-forming lines, and specialized Central Asian multimodal export logistics.
With operational facilities founded in 2009, our high-precision roll forming lines and continuous double-belt sandwich panel presses maintain complete internal production control. Every coil is certified for yield strength, thickness tolerance, and chemical zinc-aluminum mass before profiling.
Eliminate profile mismatch and color variance. We supply the complete building envelope: trapezoidal sheets, cold-formed structural Z & C purlins, translucent skylights, custom CNC flashings, matching ridge caps, self-drilling fasteners, and industrial roller shutter doors.
Seamless export execution to Uzbekistan via bonded rail container wagons (Tashkent-Tovarnaya, Sergeli) or sealed intermodal TIR trucks. Bundles feature heavy-duty export seaworthy packaging, steel corner protectors, plastic moisture wraps, and wooden runners for zero-damage jobsite arrival.
Clear, definitive technical and commercial answers addressing customs codes, GOST alignment, payment terms, and installation.
We supply complete export documentation classified under HS Code 7210.49 / 7210.70 (Color Coated / Pre-painted Profiled Steel) and 7308.90 (Assembled sandwich panels and structural metal structures). Shipments include Certificate of Origin (Form A/General), certified Mill Test Certificates (EN 10204 3.1), commercial invoices, packing lists with net/gross weights, and technical datasheets required by Uzbek customs terminal posts (e.g., Ark-Bulak, Chukursay).
Yes. All profiles are roll-formed in compliance with GOST 24045-2016 (Profiled Steel Sheets for Construction) and meet calculation parameters set out in KMK 2.01.07-96 (Loads and Impacts) and KMK 2.08.02-96. Our mechanical properties—yield strength, ultimate tensile strength, zinc-aluminum coating thickness, and paint adhesion (cross-hatch Class 0)—are backed by accredited laboratory test protocols for prompt approval by local technical supervision (Gosstroy / Stroykontroll).
Galvalume (55% Aluminum, 43.4% Zinc, 1.6% Silicon alloy) delivers 3 to 6 times greater atmospheric corrosion resistance than standard Galvanized (pure zinc) steel of equivalent coating thickness. In the hot, dry, high-UV climate of central Uzbekistan, the aluminum barrier oxide passivates against solar radiation, while zinc provides galvanic sacrificial protection at sheared edges. For demanding projects, an AZ150 coating (150 g/m²) is significantly more cost-effective over a 30-year design life.
Typical factory production lead time for orders between 2,000 m² and 25,000 m² is 10 to 18 business days. Transit time via multimodal rail or international road transport (TIR) to major logistics hubs in Tashkent, Samarkand, or Navoi ranges from 18 to 28 days depending on the routing corridor. All freight is dispatched in moisture-barrier bundles configured for side or overhead crane unloading.
For single-skin trapezoidal configurations, we apply an automated factory-laminated self-adhesive anti-condensation fleece (drip-stop) to the bottom profile surface. This non-woven textile traps up to 900 g/m² of moisture formed during nocturnal temperature inversions and releases it harmlessly via daytime ventilation. For conditioned or cold-chain facilities, we supply PIR or Rockwool composite sandwich panels that eliminate the dew point entirely.
We work directly with prominent commercial banks in Uzbekistan (including National Bank of Uzbekistan, Ipoteka Bank, Hamkorbank, and SQB). We support standard international B2B instruments, including 100% Irrevocable Letters of Credit (LC) at sight, confirmed LCs, and structured Telegraphic Transfer (T/T) deposit and balance milestones aligned with export dispatch checkpoints.
Yes. Our automated roll forming lines cut panels precisely from 1.5 meters up to 11.8 meters (to fit standard 40ft High Cube containers or rail wagons) with a tolerance of ±2.0 mm. Custom lengths directly match your structural purlin framing scheme, eliminating on-site cutting, minimizing metal scrap, and preserving factory edge corrosion coating integrity.
In regions exceeding 2,800 hours of direct annual sunlight and high UV radiation indexes, regular commercial polyester paints degrade and chalk within 5 to 7 years. We specify PVDF (polyvinylidene fluoride - 70% Kynar 500 resin) or Super Durable Polyester (HDP/SMP) with a 25–35 micron nominal dry film thickness (DFT). These systems deliver outstanding color stability (Delta E < 5) and gloss retention over a 20-to-30-year horizon.
Contact our technical engineering sales group today for profile load-span calculations, comprehensive BOM pricing, factory test reports, and customized BIM/CAD drawings for your upcoming tender.