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Home > Products > Stainless Steel Tube > Stainless Steel U bend Tube > 19.05MM 14BWG TP309S Heat Exchanger U Bend Tube


19.05MM 14BWG TP309S Heat Exchanger U Bend Tube
19.05MM 14BWG TP309S Heat Exchanger U Bend Tube
19.05MM 14BWG TP309S Heat Exchanger U Bend Tube
19.05MM 14BWG TP309S Heat Exchanger U Bend Tube

19.05MM 14BWG TP309S Heat Exchanger U Bend Tube

Payment Type: L/C,T/T,Western Union
Delivery Time: 35 Days

Basic Info

    Model No.: U Bend Tube

    Type: Seamless

    Certification: API, CE, BSI

    Application: Oil Pipe, Boiler Pipe, Chemical Fertilizer Pipe, Gas Pipe

    Section Shape: Round

    Usage: Oil&Gas Well Drilling, Chemical Industry, Thermal Equipment

    Technique: Cold Drawn

    Material: Stainless Steel

Additional Info

    Packaging: Plywood Case /Iron Case/ In Bundles Packing

    Brand: YUHONG

    Transportation: Ocean,Land,Air

    Place of Origin: China

    Supply Ability: 800 Ton / Month

    Certificate: ABS, GL, DNV, NK, PED, AD2000, GOST 9941

Product Description

ASTM A213/ASME SA213 TP309S 1.4833 Stainless Steel U Bend Heat Exchanger Tube With 19.05MM 14 BWG For Oil & Gas Application

At present U Bend Tube are widely used in Heat Exchanger Systems. Heat-Exchanger Equipments on the basis of Seamless Stainless U-Tubes and Welded Stainless U bend Tube is essential in strategically important and critical felds---Nuclear And Petrochemical Machine Building. Yuhong Group start to produce U Bend Heat Exchanger Tube Since 2006, now every year we can supply more than 6000 tons of Stainless Steel U Bend Tubes to 50 countries in the world.

Chemical Composition

Grade C(max) Si(max) Mn(max) P(max) S(max) Cr Ni Mo Ti
TP304/1.4301 0.080 1.00 2.00 0.045 0.030 18.0-20.0 8.0-10.5
TP304L/1.4307 0.035 1.00 2.00 0.045 0.030 18.0-20.0 8.0-12.0
TP304H/1.4948 0.04-0.10 1.00 2.00 0.045 0.030 18.0-20.0 8.0-12.0
TP316/1.4401 0.080 1.00 2.00 0.045 0.030 16.0-18.0 11.0-14.0 2.0-3.0
TP316L/1.4404 0.035 1.00 2.00 0.045 0.030 16.0-18.0 10.0-14.0 2.0-3.0
TP316Ti/1.4571 0.080 1.00 2.00 0.045 0.030 16.0-18.0 10.0-14.0 2.0-3.0 0.7>5x(C+N)
TP321/1.4541 0.080 1.00 2.00 0.045 0.030 17.0-19.0 9.0-12.0 0.7>5x(C+N)
TP317L/1.4449 0.080 1.00 2.00 0.045 0.030 18.0-20.0 11.0-14.0 3.0-4.0
TP347H/1.4912 0.04-0.10 1.00 2.00 0.045 0.030 17.0-19.0 9.0-13.0
TP309S/1.4833 0.080 1.00 2.00 0.045 0.030 22.0-24.0 12.0-15.0 0.75
TP310S/1.4845 0.080 1.00 2.00 0.045 0.030 24.0-26.0 19.0-22.0 0.75

Process :

1 . We use Cold Rolled and Cold Drawn techonology to produce U bend tube

2 . U bend tube produce will in accordance with the customer's drawings
3 . To avoid oxidation, inert gas (Argon) is passed through tubes ID at the required flow rate
4 . The radius is checked for its OD and wall thinning with the recommended specification
5 . We'll choose three different positions or as customer's request to make sure of the tubes quality. We'll test mechnical properties and micro-structure tests
6 . Visual inspection for witness and cracks will be done with Dye Penetrant Test
7 . Each tube shall be done Eddy current test and Hydrostatic test at the recommended pressure to check for leakage

Various kind of Steel Grades:

Ferrite and Martensitic Austenite Duplex steel Super Duplex steel Nickel Alloys Titanium














UNS S31803

UNS S32205

UNS S32304

UNS S32750

UNS S32760

UNS S31500

UNS N06600

UNS N06601

UNS N06625

UNS N08020

UNS N00880

UNS N08825

UNS N08904



Note: The other Alloys materials and steel grades can be produced upon agreement by customers.

Technical Requirements.

Straight Tubes Standard Specification For Bending:

ASME SA 213; ASME SB 163; ASME A789, ASME SA268, ASME SA269, etc.

Marking: Before Bending By Marking Machine All Over The Tube Length (Bent Section After Heat Treatment Without Marking)

Note: Marking is also possible After bending on the straight parts of U bend Tube.

Any extra requirements could be indicated by customers before order comfirmed.

Also Yuhong Group will give our customers the most professional technical support as well as after-sales service etc.

The standards of U Bend Heat Exchanger Tube as below:

- TEMA RCB 2.31 Standard Of The Tubular Exchanger Manufacturers Association

- ASTM A688/ASME SA688 Standard Specification For Welded Tubes Of Austenitic Corrosion Resistant Steel Grade Designed For Feed Water Boilers.

- ASTM B163/ASME SA163 Standard Techinical Requirements For Tubes Of Nickel And Nickel Alloy For Condensers And Heat Exchangers.

Customer Specifications.

Bending Radius: From 1.5*OD(Outside Diameter) To 1500mm

When Ordering Tubes With Radius less or equal to 1.5*OD, It Is Necessary To Agree Precision Of Geometrics.

Straight Tubes Maximum Length:(Before Bending): 35000 mm.

Leg Length: Min 1 Meter, Max. 16500 mm (For Max R=1500mm)

Note: Other Sizes are available upon agreement between customers and us.

Heat Treatment: Stress Relieved After U-Bending (Bending Area Plus 300MM For Each Leg).

Hydrostatic Test After U Bending: Maximum Test Pressure 600 Bar, Soaking 10 Sec. With

Dematerialized Water. Compressed Air Cleaning After Hydro-Test.

Packaging: In Strong Transport-Worthy Pre-fumigated wooden boxes of corresponding dimensions for each tube Length, Radius, Diameter, According To PO requirements as well as wrapped In polyethylene films With soft plastic caps on both end of Tube. Yuhong Group as the most manufacturer of U Bend Heat Exchanger Tube in China, we will provide our customers the best & stable packing to avoid any demages during the long distance transportation. All the customers will be satisfied with our products quality & service.

Below quality tests will be carried out by us:

Corrosion Test Conducted only when specially requested by the client
Chemical Analysis Test done as per required quality standards
Destructive / Mechanical Testing Tensile | Hardness | Flattening | Flare | Flange
Reverse-bend and Re. flat tests Carried out in full compliance with relevant standards & ASTM A-450 and A-530 norms, which ensures trouble-free expansion, welding & use at customers end
Eddy Current Testing Done to detect homogeneities in subsurface by using Digital Flaw-mark Testing System
Hydrostatic Testing 100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s .
Air Under Pressure Test To check any evidence of air leakage
Visual Inspection After passivation, every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections

Supplementary Testing :

Apart from the above mentioned tests, we also carry out on the manufactured products supplementary testing. The tests conducted under this include:

  • Eddy Current Testing
  • O.P Testing
  • Radiography Testing
  • Corrosion Testing
  • Micro Testing
  • Macro Testing
  • IGC Testing
  • Ultrasonic testing
  • Liquid Penetrate testing

Detailed Production Process

Seamless Pipe Production Flow Chart: Stainless Steel Bar-> Inspection-> Peeling-> Cut-Center-> Heating-> Piercing-> Inspection/Polishing-> Pickling - Cold Rolling/Drawing-> Pickling-> Solution Annealing-> Straightening-> Cutting-> Bright&Annealing/Pickling Passivating-> Composition Inspect-> Marking-> Packing-> Storing-> Shiping.

YUHONG GROUP deal with Austenitic Stainless Steel, Nickel Alloy Steel (Hastelloy , Monel, Inconel, Incoloy) seamless and welded pipe and tube already more than 25 years, every year sell more than 80000 tons of steel pipe and tube. Our client already cover more than 45 countries, Like Italy, UK, Gernmany, USA, Canada, Chile, Colombia, Saudi Arabia, Russia, Korea, Singapore, Austrial, Poland, France , ....And our group branch company and factory have been already approved by : ABS, DNV, GL, BV, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9001-2008, ISO 14001-2004.

If you have any inquires, please freely contact me.

Email: luis.bao@

Looking for ideal TP309S Heat Exchanger U Bend Tube Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the 19.05MM 14BWG TP309S U Bend Tube are quality guaranteed. We are China Origin Factory of 1.4833 Stainless Steel U Tube. If you have any question, please feel free to contact us.

Product Categories : Stainless Steel Tube > Stainless Steel U bend Tube

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Mr. Luis Bao


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