High-Performance Titanium Hardware Ready for Industrial Integration
Direct supply from Jovzi Titanium Industry Co., Ltd. Every production batch is certified with full chemical and mechanical traceability under EN 10204 3.1, backed by BaoTi Test Center verification for corrosive and high-stress environments.
Forged Gr2 blind flange designed for severe chemical piping shutoff, resistant to damp chlorine, nitric acid, and high-velocity flue streams.
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Precision-rolled Ti-6Al-4V round billet offering ≥895 MPa tensile strength, engineered for heavy rotating shafts, centrifuges, and agitators.
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Electrochemical plating and anodizing basket fabricated with high conductivity welds, immune to aggressive chromic, sulfuric, and acid electrolytes.
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High-density ultrasonic tested Grade 5 forged blocks for CNC milling of high-pressure valve bodies, manifold blocks, and mechanical impellers.
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Corrosion-proof bidirectional flow control valve manufactured with pure titanium body and ball, eliminating downtime in acidic chemical fluid handling.
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Extra-Low Interstitial (ELI) ASTM F136 certified discs with unmatched fatigue limits and biocompatibility for clinical precision devices.
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Uniform grain-structure open-system dental mill discs delivering defect-free micro-milling performance across restorative biomedical components.
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Heavy-duty electrolytic jig featuring spring-tensioned titanium contact points that eliminate arcing and withstand repeated chemical etching baths.
Product DetailsEngineering Titanium Coils for High-Corrosion Industrial Ecosystems
In modern metallurgical, chemical, and synthetic manufacturing, process equipment life hinges directly upon the chemical stability of passive surface oxide films. As a world-leading Chinese titanium mill manufacturer and exporter headquartered in the heart of Baoji—China's renowned "Titanium Valley"—Jovzi Titanium Industry Co., Ltd. supplies premium titanium coils, titanium coiled heat exchanger tubes, cold-rolled strip, and companion fluid-conveyance fittings directly designed to meet rigorous industrial standards, including ASTM B265, ASME SB-265, ASTM B338, and DIN 17860.
For demanding regional procurement destinations such as the Hamhung industrial corridor—the foundational pillar of heavy chemical synthesis, chlor-alkali production, chemical fertilizer manufacturing, and vinalon synthetic textile synthesis—material degradation from chlorides, moist chlorine gas, nitric acid, and sulfur compounds represents a continuous threat to equipment integrity. Conventional stainless steels (such as AISI 304, 316L, and even 904L) suffer rapid pitting, intergranular corrosion, and catastrophic chloride stress corrosion cracking (CSCC) under elevated process temperatures. Our vacuum-annealed Commercially Pure (CP) Grades (Gr1, Gr2) and specialized palladium/ruthenium enhanced alloys (Gr7, Gr12) form an instantaneous, stoichiometric, and self-healing Titanium Dioxide (TiO&sub2;) passivation barrier that renders equipment impervious to hostile chemical attack.
By integrating vacuum arc remelting (VAR), cold rolling precision mills, continuous inline eddy current testing, and automated dimension-gauging systems, Jovzi delivers titanium slit coils, cold-rolled continuous sheets, and spooled spiral tubing that exhibit tight wall-thickness tolerances (±0.02 mm), zero micro-fissuring, superior deep-drawing malleability, and flawless weldability for high-volume automated manufacturing and heat exchanger retubing.
Localized Applications Across Hamhung’s Industrial Architecture
Hamhung represents North Korea's critical manufacturing and chemical hub, anchoring substantial national assets such as the Hungnam Fertilizer Complex, the 2.8 Vinalon Complex, the Ryongsong Machine Complex, and major electrochemical refining operations. Jovzi’s titanium coil and tubing inventory directly resolves the intense operational wear typical of these continuous chemical processes.
Hungnam Fertilizer Complex: Ammonium & Acid Condensation
Production of synthetic nitrogenous fertilizers, ammonium nitrate, and urea generates intense concentrations of hot carbonic acid, nitric acid, and sulfurous gases. Standard heat exchangers quickly succumb to wall thinning and pinhole leaks.
- Gr2 Coiled Heat Exchanger Tubes: Resist nitric acid across all concentrations up to boiling point.
- Titanium Strips for Bellows: Provide vibration dampening in high-pressure gas compressors.
- Corrosion Rate: Exhibits <0.005 mm/year in commercial nitric and urea synthesis loops.
2.8 Vinalon Complex: Acetylene & Chlorination Loops
The manufacturing of anthracite-based calcium carbide, acetylene generation, and subsequent synthesis into vinyl acetate and polyvinyl alcohol involves aggressive organic acids, hydrochloric gases, and chlorinated catalysts.
- Gr7 / Gr12 Palladium Coils: Prevent crevice corrosion in non-oxidizing acid environments and wet HCl vapors.
- Reactor Vessel Linings: Deep-drawn Gr1/Gr2 sheets clad on structural steel shells.
- Tubular Condensers: Continuously cool acidic organic intermediates without risk of stress corrosion cracking.
Chlor-Alkali & Chemical Bleach Plants
Electrochemical cells producing caustic soda, chlorine gas, and sodium hypochlorite subject process piping and cooling towers to severe wet-chlorine attack where nickel alloys and duplex steels experience catastrophic failure.
- Wet Chlorine Gas Cooling: Gr2 titanium is the global benchmark, resisting wet Cl&sub2; at all practical process temperatures.
- Titanium Anodizing & Jig Fixtures: Provide maximum electrical transfer efficiency and zero chemical degradation in electro-baths.
- Brine Preheaters: Titanium plate and coil condensers completely withstand concentrated NaCl solutions.
Ryongsong Machine Complex: Heavy Forgings & Impellers
As Hamhung’s premiere heavy machinery manufacturing base, Ryongsong machines large-scale centrifugal pumps, high-pressure slurry blowers, and high-capacity industrial compressors requiring durable base stock.
- ASTM B348 Gr5 Titanium Bars: Machined into high-RPM compressor rotors, valve stems, and drive shafts.
- Lightweighting Advantage: 45% weight reduction compared to alloy steel, mitigating rotational inertia.
- Fatigue Endurance: Superior endurance limit in corrosive industrial plant atmospheres.
East Sea Marine Cooling & Desalination Intake
Coastal chemical infrastructure along the Hamhung and Hungnam seaboard draws massive volumes of raw seawater for once-through condenser cooling, introducing microbiological fouling, sand silt erosion, and chloride attack.
- Zero Pitting: Absolute immunity to pitting in high-salinity seawater up to 130°C.
- Erosion-Corrosion Resistance: Tolerates seawater flow velocities exceeding 20 m/s without protective film erosion.
- Thin-Wall Efficiency: Thin coil walls (0.5 mm – 0.8 mm) maximize thermal conductivity while maintaining structural stability.
Electrochemical Metallurgy & Smelting Extraction
Hydrometallurgical extraction and electro-refining circuits handling acid leaching, copper/zinc recovery, and high-temperature autoclave processing demand corrosion-proof cathode sheets and reactor heating coils.
- Titanium Permanent Cathode Plates: Eliminates copper starter sheet peeling and preserves dimensional tolerance.
- Steam Injection Coils: Titanium spiral tubes withstand concentrated H&sub2;SO&sub4; leaching liquors.
- Extended Service Cycles: Over 15 years continuous life span versus 18 months for rubber-lined vessels.
Titanium Strip, Sheet & Coiled Tubing Material Matrix
Procurement teams serving Hamhung heavy industrial revamps can benchmark our exact chemistry, mechanical strength, and application parameters against international engineering codes.
| Titanium Grade | UNS / Composition | Tensile (Rm, MPa) | Yield (0.2%, MPa) | Elongation (%) | Primary Industrial Use in Hamhung |
|---|---|---|---|---|---|
| Grade 1 (CP4) | UNS R50250 (Ti balance, O ≤ 0.18) | ≥ 240 | 170 – 310 | ≥ 24 | Plate heat exchangers, deep-drawn vessel linings, expansion bellows |
| Grade 2 (CP3) | UNS R50400 (Ti balance, O ≤ 0.25) | ≥ 345 | 275 – 450 | ≥ 20 | Wet chlorine cooling, coiled reactor tubes, nitric acid transfer manifolds |
| Grade 5 (Ti-6Al-4V) | UNS R56400 (Ti-6Al-4V, O ≤ 0.20) | ≥ 895 | ≥ 828 | ≥ 10 | High-stress centrifuges, agitator shafts, autoclave fasteners, pump impellers |
| Grade 7 (Ti-0.15Pd) | UNS R52400 (Ti-0.15Pd) | ≥ 345 | 275 – 450 | ≥ 20 | Severe reducing acids, low pH hydrochloric vapors, crevice-critical piping |
| Grade 9 (Ti-3Al-2.5V) | UNS R56320 (Half-6Al-4V) | ≥ 620 | ≥ 483 | ≥ 15 | High-pressure hydraulic lines, coiled subsea piping, high-pressure tubing |
| Grade 12 (Ti-Mo-Ni) | UNS R53400 (Ti-0.3Mo-0.8Ni) | ≥ 483 | ≥ 345 | ≥ 18 | High-temperature brine heaters, high-chloride process scrubbers > 100°C |
*Specifications conform to ASTM B265, ASTM B338, ASME SB-265, and ASME Section VIII Div 1. Certified mill test certificates provided per EN 10204 3.1 with chemical, mechanical, bend, and flattening test results.
Modernization Trends in the Hamhung Industrial Corridor
Comprehensive technical assessment of how technological upgrades, energy conservation mandates, and equipment replacement cycles are reshaping titanium procurement in South Hamgyong Province.
Transition from Carbon Steel to Total Titanium Retubing
For decades, legacy chemical plants in Hungnam operated with carbon steel, lead-lined reactors, or specialized cast iron coils that required frequent scheduled downtime and costly protective recoating. The regional development blueprint now heavily prioritizes lifecycle efficiency. Jovzi's ASTM B338 titanium heat exchanger coils enable chemical engineers to eliminate corrosion-induced contamination, halve heat-exchanger footprints, and achieve uninterrupted multi-year production campaigns.
Intensification of Vinalon & Carbochemical Synthesis
With renewed domestic focus on textile self-sufficiency and high-purity chemical output, the 2.8 Vinalon Complex is expanding capacity across its carbide-to-acetylene refining trains. This requires high-pressure titanium autoclaves, spiral cooling loops, and Gr5 valve components capable of withstanding turbulent solid-gas slurry flows without cavitation or localized stress fatigue.
Adoption of Grade 7 & Grade 12 in Crevice-Prone Units
Process modernizations have demonstrated that standard pure titanium can suffer localized crevice corrosion in acidic chloride streams when temperatures surpass 80°C. Hamhung technical buyers are increasingly switching from Gr2 to Jovzi's Ti-Pd (Gr7) and Ti-Mo-Ni (Gr12) alloys for critical flange faces, heat-exchanger tube sheets, and valve internals, completely preventing catastrophic seal failures.
Why International Industrial Buyers Choose Jovzi Titanium
Combining primary melting, cold-reduction precision rolling, vacuum heat treatment, and multi-axis CNC machining inside Baoji's world-class metallurgy cluster.
Epicenter of Baoji Valley
Sourcing directly from 0A-grade vacuum sponge titanium. We operate in immediate synergy with the national research institute and certified BaoTi metallurgical laboratories.
ISO 9001 & MTC 3.1 Traceability
Every single coil, bar, and flange is laser-marked with heat number traceability, verified for chemistry via optical emission spectroscopy and backed by EN 10204 3.1 certification.
Advanced In-House CNC Machining
Equipped with 3-axis, 4-axis, and 5-axis CNC machining centers, thread rolling equipment, and high-tonnage precision forging presses for flanges, valves, and custom OEM brackets.
Flexible Global Export Packaging
Reinforced fumigation-free wooden export cases, anti-scratch inner PVC wraps, and moisture-barrier desiccant systems ensure mirror-bright coil surfaces arrive ready for installation.
Frequently Asked Questions by Industrial Buyers Serving Hamhung
Essential technical, regulatory, and logistics answers for enterprise engineering and purchasing authorities.
Titanium Grade 2 possesses vastly superior resistance to wet chlorine gas and ambient-temperature sodium hypochlorite compared to Hastelloy C276, while offering an approximate 45% weight advantage and significant material cost savings. Hastelloy is preferred in dry chlorine or concentrated reducing hydrochloric acid, but for wet oxidizers, titanium is the undisputed standard.
Our precision cold-rolled titanium strip coils (ASTM B265) achieve thickness tolerances within ±0.015 mm to ±0.025 mm, with camber under 1.0 mm per meter. This tight dimensional uniformity ensures stable arc voltage, uniform weld penetration, and zero edge misalignment during automated high-frequency or TIG continuous tube manufacturing.
Yes. We slit titanium coils from master widths (1000 mm / 1219 mm / 1250 mm) down to narrow strips as small as 20 mm. Internal diameter (ID) configurations can be customized to 300 mm, 400 mm, or 508 mm (20 inches) with or without cardboard/steel cores to match your decoiler decoiling equipment.
100% of our spooled and straight titanium tubes (ASTM B338) undergo non-destructive inline Eddy Current Testing (ET) and pneumatic or hydrostatic pressure verification per ASTM specifications. Furthermore, mechanical flattening, flaring, and reverse-bend tests are conducted on every manufacturing lot.
We regularly ship under FOB (Tianjin / Qingdao / Shanghai), CFR, CIF, and CIP terms. Rapid express air freight via DHL/FedEx is available for critical replacement valve components or trial samples, while large-tonnage coils and heavy forgings are dispatched via standard containerized sea or multimodal overland transport.
Yes. Jovzi has over 19 years of OEM manufacturing expertise. Our engineering staff converts your 2D PDF or 3D STEP/DWG drawings into precision CNC-machined titanium flanges, valve balls, titanium anodizing racks, or specialized custom heat-exchanger headers within tight tolerances (±0.01 mm).
Consult Our Titanium Metallurgy Specialists for Your Project
Whether you require master titanium coils for tube manufacturing, ASTM B338 coiled tubes for heat exchangers in Hungnam, or custom-machined Gr5 forged components for heavy industrial machinery, Jovzi delivers verified quality, competitive mill pricing, and rapid delivery.