Introduction to Seamless Coiled Tubing
Seamless coiled tubing represents the pinnacle of piping technology, offering continuous lengths without welded joints that could compromise integrity. Toko’s advanced manufacturing process utilizes state-of-the-art hot-rolled and cold-drawn technologies to produce tubing with exceptional dimensional accuracy, superior surface finish, excellent mechanical properties, and outstanding corrosion resistance.
The absence of welds eliminates potential leakage points, making our coiled tubing ideal for critical applications requiring continuous bending or operation in high-pressure and highly corrosive environments. This seamless construction ensures uniform strength throughout the entire coil length, providing reliability where it matters most.
Company Overview: Your Trusted Industrial Piping Partner
Toko Technology Co., Ltd., strategically located in Shanghai, China, brings over 11 years of specialized expertise in industrial piping solutions to the global market. As a professional manufacturer and exporter, we deliver comprehensive piping products including stainless steel seamless pipes, stainless steel welded pipes, stainless steel fittings and flanges, nickel alloy products, and titanium seamless and welded tubes.
Our manufacturing facilities maintain ISO & PED certifications, ensuring all products meet rigorous international standards including ASTM, JIS, DIN, EN, and GOST. Toko products serve diverse industries worldwide including Oil & Gas, Petrochemical, Sugar Refining, Water Processing, Desalination, and Geothermal applications. We proudly export to numerous countries including the USA, Canada, Japan, Germany, France, Korea, and Turkey, building lasting partnerships through quality and reliability.
Material Specifications: Meeting Diverse Industrial Requirements
Comprehensive Material Portfolio
Toko TECH offers an extensive range of material grades to meet specific corrosion, temperature, and pressure requirements:
Stainless Steel Grades:
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304, 304L, 304H: Excellent general-purpose austenitic stainless steels with good corrosion resistance and formability
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316, 316L, 316Ti: Molybdenum-enhanced grades offering superior pitting and crevice corrosion resistance
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321, 321H: Titanium-stabilized grades providing excellent intergranular corrosion resistance
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347, 347H: Niobium-stabilized grades ideal for high-temperature applications
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310S: Delivers exceptional high-temperature oxidation resistance
Duplex Stainless Steel Grades:
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UNS S31803/S32205 (2205): Standard duplex with twice the strength of 304/316 and excellent chloride stress corrosion cracking resistance
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UNS S32750 (2507): Super duplex with higher corrosion resistance and strength than 2205
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UNS S32760 (Zeron 100): Advanced super duplex with tungsten and copper for exceptional corrosion resistance
Nickel Alloy Grades:
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Alloy 600 (UNS N06600): Excellent high-temperature oxidation and carburization resistance
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Alloy 625 (UNS N06625): Resists severe corrosive environments with high strength from Mo and Nb
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Alloy 800/H (UNS N08800/N08810): Heat resistant with excellent carburization and oxidation resistance
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Alloy 825 (UNS N08825): Resists sulfuric and phosphoric acids and stress corrosion cracking
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Alloy C-276 (UNS N10276): Top-tier corrosion resistance against wet chlorine, chlorides, and mixed acids
Standards Compliance
Our products comply with major international standards including ASTM, EN, and UNS specifications, ensuring global acceptance and performance reliability.
Size Specifications: Comprehensive Dimensional Range
Toko seamless coiled tubing is available in a wide range of sizes to meet various application requirements:
| Metric Dimensions | Imperial Dimensions | Maximum Coil Length |
|---|---|---|
| 3.18mm OD (0.5-0.8mm WT) | 1/8″ OD (0.020-0.032″ WT) | 1000m |
| 4.76mm OD (0.5-1.0mm WT) | 3/16″ OD (0.020-0.040″ WT) | 1000m |
| 6.35mm OD (0.6-1.2mm WT) | 1/4″ OD (0.024-0.048″ WT) | 740m |
| 9.53mm OD (0.7-1.5mm WT) | 3/8″ OD (0.028-0.060″ WT) | 450m |
| 12.70mm OD (0.9-2.0mm WT) | 1/2″ OD (0.035-0.080″ WT) | 400m |
| 15.88mm OD (1.0-2.2mm WT) | 5/8″ OD (0.040-0.088″ WT) | 270m |
| 19.05mm OD (1.2-2.6mm WT) | 3/4″ OD (0.048-0.102″ WT) | 220m |
| 25.40mm OD (1.5-3.0mm WT) | 1″ OD (0.060-0.118″ WT) | 170m |
*Note: Specifications shown are for TP316/316L material. Final dimensions may vary depending on material grade and manufacturing process.*
Advanced Manufacturing Process and Quality Assurance
Toko TECH employs sophisticated manufacturing techniques combining hot extrusion with cold working processes to ensure product uniformity and exceptional performance. Our comprehensive quality management system includes:
Non-Destructive Testing:
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Hydrostatic Testing: Verifies strength and leak integrity using deionized water under pressure
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Splitflow Testing: Ensures interior clearance and surface integrity for small diameter tubing
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Eddy Current Testing: Detects surface and sub-surface flaws using electromagnetic induction
Dimensional and Surface Analysis:
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Surface Roughness Measurement: Quantifies OD/ID smoothness against certified standards
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Dimensional Analysis: Precise measurement of OD, ID, and wall thickness using calibrated instruments
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Hydraulic Diameter Assessment: Measures cross-sectional fluid flow characteristics
Material Verification:
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Positive Material Identification (PMI): Verifies material composition through XRF analysis
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Mechanical Testing: Includes yield strength, tensile strength, elongation, and hardness testing
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Grain Size Analysis: Evaluates material microstructure and temper characteristics
Performance Characteristics and Benefits
Toko seamless coiled tubing delivers exceptional performance across multiple parameters:
Superior Strength and Pressure Resistance:
The uniform seamless structure withstands higher internal and external pressures compared to welded alternatives, ensuring reliability in demanding applications.
Exceptional Corrosion Resistance:
Our diverse material portfolio provides optimized resistance to various chemical media, seawater, and high-temperature corrosion environments.
Consistent Mechanical Properties:
Precision manufacturing and controlled heat treatment processes ensure uniform performance throughout the entire coil length.
Excellent Bending and Formability:
The continuous coiled form facilitates easy installation, allowing routing around obstacles while reducing fitting requirements and potential leak points.
High-Quality Surface Finish:
Smooth inner wall surface minimizes pressure drop and reduces fouling risk, maintaining system efficiency over time.
Industry Applications: Solving Real-World Challenges
Oil and Gas Industry
Toko’s duplex and nickel alloy coils serve as chemical injection lines on offshore platforms, continuously injecting inhibitors and demulsifiers into well streams while resisting corrosion from seawater and H₂S. Our tubing also excels in instrumentation and hydraulic control line applications where reliability is critical.
Chemical and Petrochemical Industry
In PTA (Purified Terephthalic Acid) plants, our 316L and higher-grade coils transport high-temperature, corrosive media containing acetic acid and bromides. The seamless construction ensures integrity in these challenging environments while minimizing maintenance requirements.
Shipbuilding and Offshore Engineering
Our coiled tubing is specified for fuel and lubricant transfer systems on ships, leveraging its bendability for efficient routing in confined engine room spaces. Toko 316L tubing provides exceptional resistance to marine atmosphere corrosion, ensuring long-term performance.
Industrial Heating Systems
For steam tracing applications where lines are wrapped around process pipes for thermal insulation, our 321H coils offer the ideal combination of high-temperature strength and resistance to sensitization, ensuring reliable operation in heating applications.
Aerospace Industry
In aircraft engine hydraulic and fuel systems, our high-precision seamless tubes meet stringent aerospace standards for reliability, lightweight construction, and high-pressure performance. The consistent quality and performance characteristics make Toko tubing ideal for these critical applications.
Why Choose Toko Technology?
With over a decade of specialized experience, Toko Technology has established itself as a trusted global supplier of high-quality industrial piping solutions. Our certifications including ISO & PED demonstrate our commitment to quality and consistency.
Comprehensive Product Range:
Global Reach and Local Expertise:
We serve customers across multiple continents with responsive service and technical support, ensuring the right solution for each application.
Quality Assurance:
Our rigorous quality control processes ensure that every product meets specified requirements and performs as expected in the field.
Technical Support:
Our experienced team provides comprehensive technical support, helping customers select the optimal material and specification for their specific application requirements.
Contact Us for Your Seamless Coiled Tubing Requirements
Whether you require standard specifications or custom-engineered solutions, Toko Technology has the expertise and manufacturing capabilities to meet your most demanding requirements. Our team is ready to discuss your project needs and provide technical guidance to ensure optimal performance and reliability.
Contact us today to request quotations, technical specifications, or to discuss your specific application requirements with our engineering team.
Toko Technology Co., Ltd. – Your Partner for Premium Industrial Piping Solutions
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