Micro-tube Bundle Tubes

Microtube bundle tubes are precision small-diameter tubes engineered for compact microtube heat exchanger cores. These tubes are arranged in dense tube bundles and connected with tube sheets, enabling one fluid to flow inside the tubes while another fluid flows across the outside surface. This configuration facilitates efficient heat transfer in designs that require both compact dimensions and low weight. Huashang Steel supplies precision micro tubes manufactured from stainless steel, nickel alloy, titanium, and special alloys for thermal management systems that demand compact size, high pressure resistance, corrosion resistance, and stable performance.

Key Advantages of Microtube Bundle Tubes

Dimensional and Surface Characteristics

These micro tubes feature high dimensional accuracy, a smooth inner bore surface, and uniform wall thickness. Tube ends are square cut, deburred, burr-free, and cleaned, making them ready for immediate assembly. Multiple surface finish options are available to meet specific application requirements.

Performance and Application Flexibility

Tube lengths can be customized to accommodate tube bundles, coiled tubes, cut-to-length tubing, straight tube sections, and prototype development. Low-volume and sample orders are supported. The tubes are suitable for high-pressure applications and offer high-temperature material options. Their compact and lightweight design contributes to overall system efficiency.

Technical Specifications and Size Range

Material Options for Microtube Bundle Tubes

Stainless Steel: TP304, TP304L, TP304H, TP304LN, TP316/TP316L, TP316H, TP316Ti, TP316LN, TP321, TP321H, TP317, TP317L, TP347, TP347H, TP310S, TP310H, TP904L, 254Mo, S30432, S31042, N08367, 253Ma, S30815, S38810

Duplex & Super Duplex Steel: S31500, S32101, S32003, S32304, S31803, S32205, S32750, S32760

Hastelloy: Alloy B/N10001, Alloy B2/N10665, Alloy B3/N10675, Alloy C4/N06455, Alloy C22/N06022, Alloy C276/N10276, Alloy C2000/N06200

Inconel: Alloy 600/N06600, Alloy 601/N06601, Alloy 617/N06617, Alloy 625/N06625, Alloy 718/N07718, Alloy X/N06002, Alloy X-750/N07750

Incoloy: Alloy 800/N08800, Alloy 800H/N08810, Alloy 800HT/N08811, Alloy 825/N08825, Alloy 925/N09925, Alloy 926/N08926

Monel: Alloy 400/N04400, Alloy K500/N05500

Nickel: Ni 200 (N02200, N6), Ni 201 (N02201, N5)

Titanium: TA1 (Gr.1), TA2 (Gr.2), TA3

Titanium Alloys: TA9/TA9-1, TA10, TC4 (Gr.5)

Inspection and Quality Control Measures

All microtube bundle tubes undergo comprehensive inspection to support high-performance heat exchanger applications. Inspection procedures include dimensional inspection for outer diameter, inner diameter, wall thickness, and length; visual inspection for surface defects, scratches, dents, and deformation; tube end inspection for burrs, cracks, and cutting quality; straightness inspection; and cleanliness inspection.

Non-destructive testing methods include eddy current testing, ultrasonic testing, air under water leak test, and hydrostatic pressure test. Additional testing includes PMI material verification, tensile test, hardness test, chemical composition test, and surface roughness inspection. 100% final inspection before shipment is available when required. EN 10204 3.1 material certificates are provided.

Applications of Microtube Bundle Tubes

Microtube bundle tubes are used in microtube heat exchanger cores and microtube shell & tube heat exchangers across multiple industries. Specific applications include aerospace bleed air coolers, aircraft environmental control systems, high-performance automotive racing radiators and intercoolers, oil-air and oil-liquid coolers, cryogenic recuperators, LNG and hydrogen thermal management systems, supercritical CO2 heat exchangers, modular nuclear heat exchangers, condensers and evaporators, phase change material heat exchangers, defense and military vehicle cooling systems, space propulsion and high-temperature heat exchange systems, and compact liquid-liquid heat exchangers.

FAQ

What is the minimum order quantity for microtube bundle tubes?

Low-volume and sample orders are supported to accommodate prototype development and small-scale production requirements.

Can you provide custom lengths and tube end finishes?

Yes, tube lengths can be customized according to customer drawings for tube bundles, coiled tubes, cut-to-length tubing, and straight tube sections. Multiple tube end finishes are available, including square cut, deburred, burr-free, and cleaned ends ready for assembly.

What certifications are available for these micro tubes?

EN 10204 3.1 material certificates are provided with all orders. Comprehensive testing reports are available upon request.

Which materials are suitable for high-temperature and high-pressure applications?

High-temperature material options include stainless steel grades such as TP304H, TP316H, TP321H, TP310S, and TP310H, as well as nickel alloys like Inconel 600, Inconel 601, Inconel 625, and Hastelloy alloys. These materials are suitable for high-pressure applications.