Custom Dual-Cylinder Stainless Steel Rollers for Textile Printing and Dyeing

The AstraRoll Technical Advantage

Engineering a dual-cylinder immersion roller for high-temperature textile dyeing requires absolute metallurgical purity and structural precision:

Dual-Cylinder Jacketed Architecture: By engineering an inner cylinder concentric to the outer shell, we create an internal flow channel. This allows plant engineers to circulate steam, hot oil, or cooling water directly inside the roller, maintaining absolute temperature uniformity across the fabric during heat-setting or dyeing. For immersion applications without fluid circulation, the twin-tube structure adds immense radial strength while preventing the roller from bowing under heavy fabric tension in liquid baths.

Extreme Chemical Immersion Armor: While standard 304 stainless steel will pit and rust when exposed to warm chlorides and sulfuric dye acids, AstraRoll exclusively utilizes premium SUS316L and super austenitic 904L stainless steel. 904L contains high levels of nickel, chromium, molybdenum, and copper, providing unparalleled resistance to crevice corrosion and acid stress-cracking in boiling chemical vats.

Ultra-Precision Mirror Polish: Delicate silks, synthetic filaments, and woven fabrics will catch and tear on even the smallest surface imperfection. Utilizing multi-stage abrasive and mechanical buffing, we polish the roller surface to a flawless, mirror-like finish (Ra ≤ 0.02 μm to 0.04 μm). This ultra-smooth topography eliminates fabric friction and ensures sticky dyes and chemical sizing wash off effortlessly without staining the roller.

360-Degree Seamless Weld Integrity: A single microscopic weld void can allow corrosive dyeing chemicals to seep into the interior of the roller, causing internal rot and catastrophic shaft failure. AstraRoll employs automated robotic TIG and laser welding, followed by rigorous hydrostatic pressure and leak testing, guaranteeing a 100% hermetically sealed structure.

Key Specifications

Please note: Every AstraRoll Dual-Cylinder Roller is custom-engineered based on your specific machine dimensions, thermal requirements, and chemical bath composition.

Outer Diameter (O.D.): Custom from 100mm up to 800mm+.
Face Length: Custom manufactured from 500mm up to 4,500mm+.
Cylinder Material: SUS316L, 904L Super Austenitic, or Duplex Stainless Steel (2205).
Surface Roughness: Ra ≤ 0.02 μm (Mirror Finish) up to Ra 0.8 μm (Fine Polished).
Concentricity (TIR): CNC precision ground to ≤ 0.02mm to ensure uniform fabric tension across wide spans.
Operating Pressure (Jacketed Models): Custom tested up to 10+ Bar for internal steam/fluid circulation.

Primary Applications

AstraRoll Dual-Cylinder Stainless Steel Rollers are the industry standard for continuous wet-processing and fabric finishing equipment:

Dyeing Jiggers & Sizing Baths: Submerged immersion rollers operating continuously inside aggressive chemical dye vats, bleaching tanks, and sizing baths.

Continuous Textile Printing Lines: Functioning as high-precision impression cylinders and web guide rollers on rotary screen, flatbed, and digital textile printing presses.

Mercerizing & Bleaching Machines: Handling tensioned fabrics through high-concentration caustic soda and hydrogen peroxide washing baths without corrosion or chemical staining.

High-Temperature Fabric Finishing: Utilizing internal steam or oil circulation within the dual-cylinder jacket to uniformly heat or cool fabrics during calendering and heat-setting.

Why Choose AstraRoll?

Hydrodynamic & Thermal Engineering Support

For dual-cylinder rollers requiring internal heating or cooling, simply pumping steam into a hollow tube creates hot and cold spots that ruin fabric dyeing uniformity. AstraRoll engineers design internal spiral flow baffles between the inner and outer cylinders. This forces the thermal fluid to travel in a high-velocity, calculated helix across the entire face length of the roller, guaranteeing ±0.5°C temperature uniformity from edge to edge. Turnkey

Dynamic & Corrosion Testing

Before any roller leaves our facility, it undergoes rigorous verification. We perform 100% hydrostatic pressure testing on all jacketed dual-cylinder rollers to certify leak-free operation under steam pressure. Furthermore, every roller is subjected to computerized dynamic balancing to ISO 1940 Grade G2.5, ensuring whisper-quiet, vibration-free rotation on high-speed textile printing presses running at over 150 meters per minute.

Q1. Are you a trader or direct factory?

We are a direct manufacturing factory with over 20 years of expertise in high-end industrial rollers, casters and material handling solutions. Our facility operates with ISO-certified quality management systems, allowing us to maintain full control over production cycles and quality standards. Throughout two decades of growth, we have established deep, long-term strategic partnerships with several listed companies and global automation leaders, proving our reliability as a high-tier industrial supplier.

Q2. What are your main products?

AstraRoll specializes in the engineering and production of three core product lines: Industrial Rollers, Heavy-Duty Wheels, and Precision Casters. We do not just sell components; we provide integrated movement and transport solutions. Our products are widely utilized across high-demand sectors, including: New Energy, Lithium Battery, Mining, Heavy Industry, Medical Institutional, Agriculture and Logistics.

Q3. What about delivery time?

We deeply understand that project timelines are critical.
Standard Products: Usually dispatched within 7–15 working days if the components are in stock.
Customized/OEM Orders: Depending on the complexity and volume, the lead time typically ranges from 20–35 days. This includes time for technical drawing confirmation, specialized tooling, and rigorous pre-shipment testing.
Shipping Methods: We offer flexible global logistics solutions, including FOB and CIF terms. We ship via Sea Freight (for bulk industrial orders), Air Freight (for urgent project needs), and International Express (DHL/FedEx/TNT) for smaller components or samples.

Q4. How can I get a quote for customized products?

Since a significant portion of our business involves specialized engineering, pricing is tailored to your specific technical requirements. To provide an accurate quote, please provide the following details: Technical Drawings or Sketches, Application Environment, Quantity, Special Requests. Our engineering team typically reviews and responds to custom inquiries with a formal quotation within 24–48 hours.

Q5. What is your payment?

TT / Paypal / Western Union / LC / Credit Card etc. are all available to us.