Pressure Vessel U Tube Bundle

• Customized: Customized
• Performance: Pressure Resistant
• Brand: Tongji
• Certification: ISO
• Style: Heat Exchanger
• Size and Shape: Tema, Even Non-Tema, as Drawings
• Model NO.: Stainless steel, Duplex Steel, Titanium, Nickel,
• Application: Heater, Cooler, Vaporizer, Condenser
• Structure Material: Metal Material
• Heat Transfer Surface: Tubular Heat Exchanger
• Principle: Regenerative Heat Exchanger
• Transport Package: Wooden Case
• Specification: acc to the ASME specifications or others
• Trademark: Tongji Engineering
• Origin: China
• HS Code: 8404909000
• Production Capacity: 50000PCS

Product Description

U-Tube Bundle

Tubing that is generally used in TEMA sizes is made from low carbon steel, copper, Admiralty, Copper-Nickel, stainless steel, Hastalloy, Inconel, titanium and a few others. It is common to use tubing from 5/8" to 1-1/2" in these designs.
Tubes are either generally drawn and seamless or welded as well as finned tubes. High quality ERW (electro-resistance welded) tubes exhibit superior grain structure at the weld.


Tube holes of tubesheets can be drilled and reamed and can be machined with one or more grooves. This greatly increases the strength of the tube joint.      


                                                                                                      
Where the tube and tube sheet materials are joinable, weldable metals, the tube joint can be further strengthened by applying a seal weld or strength weld to the joint.

A strength weld has a tube slightly reccessed inside the tube hole or slightly extended beyond the tube sheet. The weld adds metal to the resulting lip.

A seal weld is specified to help prevent the shell and tube liquids from intermixing. In this treatment, the tube is flush with the tube sheet surface. The weld does not add metal, but rather fuses the two materials.

In cases where it is critical to avoid fluid intermixing, a double tube sheet can be provided. In this design, the outer tube sheet is outside the shell circuit, virtually eliminating the chance of fluid intermixing. The inner tube sheet is vented to atmosphere so any fluid leak is easily detected.

Type of materials	Technical requirements for the TubeSheet   * according to
Duplex Stainless Steel	ASTM/ASME SA182 F44, F45, F51, F53, F55, F60, F61
Stainless Steel	ASTM/ASME SA182 F304,304L,F316,316L, F310, F317L, F321, F347
Carbon Steel	ASTM/ASME A105, A350 LF1, LF2, A266, A694, A765 Gr.2
Alloy Steel	ASTM/ASME SA182 F1, F5, F9, F11, F12, F22, F51, A350-LF3
Non Ferrous	Titanium, Brass, Al-Brass, Copper Nickel, Nickel Alloys, Hastelloy
Titanium	ASTM/ASME SB381, Gr.1, Gr.2, Gr.5, Gr.7, Gr.12, Gr.16
Copper Nickel	ASTM/ASME SB151, UNS 70600(Cu-Ni 90/10), 71500(Cu-Ni 70/30)
Brass, Al-brass	ASTM/ASME SB152 UNS C10100, C10200,C10300,C10800,C12200
Nickel Alloys	ASTM/ASME SB169,SB171, SB564, UNS 2200, UNS 4400, UNS 8825 UNS 6600, UNS 6601, UNS 6625
Alloy 20	ASTM/ASME SB472  UNS 8020
Hastelloy	ASTM/ASME SB564, UNS10276 ( C 276 )
Claded materials	ASTM/ASME SB898, SB263, SB264 or closer explosion cladding, making materials of 2 in 1 or 3 in 1.
	Titanium- Steel, Nickel-Steel,Titanium- Copper,  Stainless Steel- Carbon Steel, Alloys- Steel etc.