Name: ASME U-Stamp Tube Bundle with SA179 Carbon Steel Tubes and SA266 Gr.2N Tube Sheet
Brand: YUHONG HOLDING GROUP CO., LTD
SKU: Tubo sin costura de acero al carbono ASME SA179 con placa tubular ASME SA266 Gr.2N
Price: 500,000.00 USD
Availability: InStock

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ASME U-Stamp Tube Bundle with SA179 Carbon Steel Tubes and SA266 Gr.2N Tube Sheet

ASME U-Stamp Tube Bundle

SA179 Carbon Steel Tube Bundle

SA266 Gr.2N Tube Sheet Bundle

Lugar de origen:

Porcelana

Nombre de la marca:

YUHONG

Certificación:

ASME, U STAMP, EAC, GOST R, PED, API , ABS, LR, DNV, GL , BV, KR, TS, CCS

Número de modelo:

Tubo sin costura de acero al carbono ASME SA179 con placa tubular ASME SA266 Gr.2N

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Detalles del producto

Resaltar:

ASME U-Stamp Tube Bundle

SA179 Carbon Steel Tube Bundle

SA266 Gr.2N Tube Sheet Bundle

Términos de pago y envío

Cantidad de orden mínima

1 juego

Precio

1 - 1000000 USD

Detalles de empaquetado

Paleta

Tiempo de entrega

45 - 150 días

Condiciones de pago

T/T, L/C

Capacidad de la fuente

50 juegos por mes

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Éntrenos en contacto con

+8618957451975

vladimir@steelseamlesspipe.com

0086-574-88013900

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Descripción de producto

ASME U-Stamp Tube Bundle with SA179 Carbon Steel Tubes and SA266 Gr.2N Tube Sheet

Yuhong Group Co., Ltd. is a leading Chinese enterprise specializing in the design and supply of high-quality heat exchange equipment, pressure vessels and related components. Our product range includes shell-and-tube heat exchangers, air coolers, as well as tube bundles, U-tubes, finned tubes and all supporting parts such as tube sheets, baffles, covers and flanges.

Product Description

ASME U-Stamp certified Tube Bundle complying with ASME BPVC Section VIII, Division 1 is a pre-assembled unit ready for installation into heat exchanger or condenser shells. The product fully conforms to ASME Section VIII Div. 1 and TEMA standards. Its design enables stable operation at temperatures up to 400 °C and pressures up to 206.8 bar (3000 psi) in non-corrosive and mildly corrosive media.

Main Components and Materials

The bundle consists of two core components manufactured in accordance with stringent standards.

Component	Material per ASME	Key Characteristic
Heat exchanger tubes	SA179 (ASTM A179)	Cold-drawn seamless low-carbon steel tube for heat exchangers
Tube sheet	SA266 Gr.2N	Normalized forged carbon steel

Material Technical Parameters & Chemical Requirements

Parameters	SA179	SA266 Gr.2N
Tensile strength	≥ 325 MPa	485–655 MPa
Yield strength	≥ 180 MPa	≥ 250 MPa
Elongation	≥ 35%	≥ 20%
Chemical composition	SA179	SA266 Gr.2N
Carbon (C)	0.06 – 0.18%	≤ 0.30%
Manganese (Mn)	0.27 – 0.63%	0.40 – 1.05%
Phosphorus (P)	≤ 0.035%	≤ 0.025
Sulfur (S)	≤ 0.035%	≤ 0.025
Silicon (Si)	/	0.15 – 0.35%

Quality Control and Testing

Every tube bundle undergoes mandatory tests in compliance with ASME requirements prior to shipment.

Type of Test	Method / Standard	Inspection Purpose
Hydrostatic test	In accordance with ASME Section VIII UG-99	Check the tightness of tube-to-tube sheet joints
Mechanical testing of tubes	Tensile test, flattening test, expanding test	Verify mechanical properties of SA179 material
Destructive testing of welds	Visual and dimensional inspection	Inspect the quality of rolling and welding joints
Hardness inspection	HRB ≤ 72 (for SA179)	Ensure no excessive work hardening of the metal
Material inspection (NDE)	UT, PT as required	Detect surface defects on tube sheets

Application Fields

Petroleum refining: Condensers, feed water heaters, oil gas coolers.
Petrochemical industry: Heat exchange equipment for service in environments free of severe hydrogen sulfide corrosion.
Power industry: Steam turbine condensers, district heating water heaters.
General industry: Compressor stations, heat recovery systems, boiler houses.

Important limitation: SA266 Gr.2N is not recommended for direct service in acidic media (high H₂S content without inhibitors) and aggressive chlorides unless additional coating or cladding is applied.

Technical Advantages & Services

ASME U-Stamp: Valid for equipment installation in the USA and Canada without additional inspections. The certificate is valid for 3 years with mandatory AIA audits.
SA179 Tube: Post final cold drawing, heat treatment at 650 °C (1200 °F) eliminates residual stress.
SA266 Gr.2N (normalized): Higher impact toughness and uniform microstructure compared with hot-rolled metal.
Tube fixing by welding or rolling: Joining methods are selected according to design pressure (mechanical rolling, seal welding or a combination of both).
Customization: Full-cycle manufacturing, from TEMA-compliant hole pitch design to finish machining of mating surfaces for any shell.

Frequently Asked Questions

«Is ASME SA179 the same as ASTM A179?»
Yes. ASME SA179 is fully harmonized with ASTM A179 and approved for application under Section VIII. The only difference is in the scope of approval documents and inspection requirements.
«Can SA266 Gr.2N be used at temperatures above 400 °C?»
Technically, the steel maintains its strength up to approximately 540 °C. For long-term operation above 400 °C, ASME recommends SA266 Gr.3 or chromium-molybdenum alloy steels (e.g. SA387 Gr.11).
«Can I order a tube bundle assembled with tube sheets but without the shell?»
Yes. Yuhong Group supplies tube bundles as standalone products for replacing worn parts on in-service equipment.
«Is welding between tubes and tube sheets mandatory?»
No, provided the pressure does not exceed the design limit for mechanical rolling. Three standard connection methods are available: rolling only, rolling plus seal welding, and pressure-type welding for assemblies prone to flange leakage.
«What is the custom production lead time?»
45 to 150 days, depending on product complexity and order quantity. Global delivery is available with certifications including BV, DNV, PED, ABS and more.

For all inquiries including cost estimation and technical confirmation of tube bundles tailored to your operating conditions, please contact our specialists directly:

Email: vladimir@steelseamlesspipe.com

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ASME U-Stamp Tube Bundle with SA179 Carbon Steel Tubes and SA266 Gr.2N Tube Sheet

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