Immediate export inventory ready for precision sizing, surface galvanization, and dimensional milling. Review foundational technical specifications and request commercial billing below.
Wide-flange profiles for workshop frames, bridge girders, and vertical load columns. Cut-to-length and precision drilling available.
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Engineered for pipe manufacturing, deep stamping, and heavy mechanical structural housings with continuous slitting capacity.
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High-tensile ribbed reinforcement rebar designed for cast-in-place concrete slabs, foundation piles, and civil bridge piers.
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Continuous organic coating with superior UV resistance and anti-chalking properties for industrial roofing and exterior cladding.
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Heavy structural flat steel with thick hot-dip zinc plating for grounding systems, sub-sea framing, and high-salinity exposures.
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Tight zinc adhesion and zero-spangle surface quality intended for HVAC ducting, structural purlins, and automotive stamping.
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Longitudinal submerged arc and high-frequency welded pipes for civil scaffolding, offshore piling, and fluid piping networks.
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Gate, butterfly, and check valves matched directly with plate-welded flange systems to ensure mechanical alignment in heavy fluid pipelines.
Request Technical FileUnderstanding the pricing mechanisms, metallurgical yield thresholds, and integrated supply chain economics governing northern China's industrial plate manufacturing clusters.
Procuring medium-thick steel plate (traditionally classified from 4.5mm up to 60mm in heavy engineering, and extending past 100mm for extra-heavy offshore slabs) demands granular technical comprehension of the upstream mill dynamics. In modern heavy structural design, steel plate is not treated merely as raw flat stock; it is an engineered metallurgical solution where chemical homogenization, continuous casting rolling reductions, thermo-mechanical controlled processing (TMCP), and secondary deoxidization define ultimate yield stability.
Tianjin and Tangshan serve as the global epicenter of structural carbon and alloy plate output. With over 10 million tons of aggregate integrated capacity across HZXY’s production network, cost drivers are optimized through vertical proximity: blast furnace molten iron routing directly to basic oxygen furnaces (BOF), ladle refining, vacuum degassing, and advanced wide-plate rolling lines within an uninterrupted operational footprint.
| Steel Grade System | Thickness Band (mm) | Yield Baseline (ReH) | Standard Equivalents | Supply Format & Edge Spec | Typical Structural Focus |
|---|---|---|---|---|---|
| Q235B / A36 / SS400 | 6.0 mm – 50.0 mm | ≥ 235 MPa | EN 10025-2 S235JR | Milled Edge / Flame Cut | Civil frameworks, storage tanks, non-critical purlins |
| Q355B (GB/T 1591-2018) | 8.0 mm – 60.0 mm | ≥ 355 MPa | ASTM A572 Gr.50 / S355JR | Trimmed / Square Cut | High-rise core columns, heavy crane gantry girders |
| Q355ND / NE (Low-Temp) | 10.0 mm – 80.0 mm | ≥ 355 MPa (Charpy -20°C/-40°C) | EN 10025-3 S355N | Normalized / TMCP | Bridge cross-beams, sub-zero logistics corridors |
| Pressure Vessel Grade (Q345R) | 6.0 mm – 40.0 mm | ≥ 345 MPa (Ultrasonic Cl. I/II) | ASME SA516 Gr. 70 | Normalized / Ultrasonic Insp. | Boilers, cryogenic chemical autoclaves, pressurized drums |
| Marine Plate (CCS/ABS/BV) | 12.0 mm – 70.0 mm | ≥ 315 – 390 MPa | ASTM A131 EH36 / DH36 | Z-direction Property (Z25/Z35) | Ship hull bottom plating, jack-up platform tubular legs |
The geographical convergence of raw iron ore terminals, metallurgical coking coal basins, and specialized deep-water logistics delivers unassailable pricing efficiency.
Situated in Daqiuzhuang, Tianjin, with our second massive rolling footprint in Tangshan, HZXY operates within the dense cluster that manufactures roughly 15% of the world's merchant structural steel. Intra-district transit between blast furnaces, rolling stands, and surface treatment lines reduces deadweight handling costs to near zero.
Full implementation of GB/T 1591-2018 parameters ensures tighter controls on carbon equivalents (CEV / Pcm) compared to legacy European S355JR standards. This achieves superior cold cracking resistance during heavy section multi-pass submerged arc welding without demanding cost-prohibitive preheating cycles.
Our heavy plate facilities utilize computerized accelerated cooling systems following multi-stage reversible rolling. By refining ferrite grain sizing to ASTM scale 9 or higher, high tensile yield strengths are attained with exceptionally low carbon contents, radically elevating low-temperature impact toughness.
Orders are consolidated and dispatched through Tianjin Xingang or Caofeidian Port within a mere 60km trucking buffer. This guarantees break-bulk maritime berthing speeds, reduced ocean demurrage risks, and rapid containerized stuffing for high-value cut plates and processed beams.
Eliminate mid-stream contractor delays. We process medium-thick raw plates into assembly-ready components using automated multi-head CNC plasma cutters, robotic beam welding lines, and certified zinc hot-dip tanks.
Equipped with high-definition underwater plasma and heavy oxy-fuel cutting gantries capable of slicing medium-thick plates up to 150mm with ISO 9013 Class 2 edge perpendicularity, minimizing bevel-grinding requirements for automated robotic welding.
Engineered fabrication of structural built-up box columns, tapered bridge girders, and reinforced stiffener plates. Welded assemblies undergo 100% non-destructive ultrasonic testing (UT) and radiographic verification (RT) per AWS D1.1 specifications.
High-torque radial drilling, CNC plate hole drilling, and dual-axis bevel milling (V, X, and K preparations). Structural connection plates arrive on your site tagged, countersunk, and dimensionally calibrated for instant high-strength bolt fastening.
Large-capacity hot-dip galvanizing kettles allowing single-dip immersion of long profiles and wide-cut plates up to 14 meters. Zinc coating weights strictly comply with ASTM A123 / ISO 1461, delivering 85µm to over 120µm of sacrificial atmospheric shielding.
Demonstrated performance where engineering margins permit zero tolerance for material deviation. HZXY steel profiles and plates anchor critical structural nodes globally.
Supplied high-toughness marine steel plates and bridge girders engineered for prolonged saline corrosion resistance, cyclic wave-loading impacts, and massive torsional tensile strains.
Procured precision-profiled medium-thick plates and structural tubular sections supporting the world's largest single-building terminal roof structure, achieving seamless architectural load transfer.
Delivered custom high-strength structural grade sections and plate nodes fabricated for the iconic twisted spatial truss network, requiring flawless multi-axis welded joint integrity.
Furnished precision-toleranced space-frame tubular connectors, plate flanges, and high-performance pipeline support structures subjected to elevated atmospheric moisture levels.
Ensuring complete risk elimination across commercial documentation, international maritime standards, and physical laboratory testing before port manifests are finalized.
Every commercial plate bundle is assigned unambiguous traceability. Official mill heat number documentation details complete chemical heat analysis (C, Si, Mn, P, S, Cr, Ni, Mo, V) along with tensile, yield, elongation, and V-notch impact values.
Full access protocols for SGS, Bureau Veritas (BV), TÜV, and Intertek surveyors. Inspectors routinely verify plate thickness ultrasonic maps, gauge calipers, magnetic particle testing (MT) for surface micro-fissures, and zinc coating thickness gauges.
EPC general contractors avoid container dead space and fractured logistics. Our logistics desk consolidates medium-thick plate consignments with matching structural H-beams, pipeline runs, drainage fittings, and heavy valve components into unified bills of lading.
Direct responses to critical inquiries posed by overseas project directors, commercial buyers, and lead structural engineers.
Explore auxiliary structural channels, precision drawn bars, and fluid infrastructure components designed to integrate with custom plate assemblies.
Equal and unequal structural angle sections with slotted perforation patterns for rapid modular framing, electrical cable ladders, and bracing.
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C and U profile channels engineered for purlins, floor beams, equipment beds, and curtain wall anchor systems with certified zinc depth.
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Hot-rolled sharp-corner flat stock used for general fabrication, machinery parts, base plates, industrial grating, and transport trailers.
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Solid round structural steel rods hot-dip galvanized for marine tieback anchors, civil foundation dowels, and electrical transmission hardware.
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Continuous coiled wire rod for high-stress spring drawing, pre-stressed concrete wire strands, industrial fasteners, and mesh welding.
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Low carbon cold-drawn wire engineered with tight diameter tolerances for high-speed nail collating, rebar tying, and threaded wire forms.
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Solid square profiles forged and rolled for heavy industrial railings, security barriers, shaft machining, and structural ornamental ironworks.
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Internal/external epoxy coated or 3LPE steel pipe designed for buried water transmission mains, gas utilities, and industrial slurry discharge.
Request Coating SpecsConnect directly with HZXY’s metallurgical engineers and international logistics desks in Daqiuzhuang, Tianjin. We generate actionable mill-direct estimates, equivalent standard mappings, and vessel shipping plans within 24 hours.
