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ASME SA179 Seamless Serpentine Superheater Coil Tube

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ASME SA179 Seamless Serpentine Superheater Coil Tube

Brand Name : HDT

Model Number : Serpentine Tube

Certification : ASME, TUV, SGS, ABS, PED, ISO9001, Grade A

Place of Origin : China(Mainland)

MOQ : 500 tons

Price : 800 - 9000 USD / ton

Payment Terms : L/C, T/T, Western Union

Supply Ability : About 1000 ton / month

Delivery Time : 60-75days

Packaging Details : seaworthy packing for exporting

Material : Stainless steel, carbon steel, alloy steel

Certificate : ASME, TUV, SGS, CE, GRADE A, ISO9001

Shape : U Bend , Straight ,Coil, Snake Tube

Application : boiler&heat exchanger, energy, petrochemical, nuclear

OD : 1.5 to 1500mm

Finishing : Annealed, beveling

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Seamless Serpentine Tube Superheater Coil For Pressure Parts ASME SA179

Serpentine Tube Introduction

Serpentine Tube are widely used in Heat Exchanger Systems.

Hua Dong Energy Technology Started to Produce Serpentine Tube Since 1985,Up to now already supply more than 300,000 tons Steel Serpentine Tube to over 30 countries.

Hua Dong Energy Technology deals with Austenitic Stainless Steel, Nickel Alloy Steel (Hastelloy , Monel, Inconel, Incoloy ) seamless and welded pipe and tube already more than 35 years, every year sell more than 50000 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, ISO 14001.

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-Bending Tube.

U-Bend Tubes:

-TEMA RCB 2.31 Standard Of The Tubular Exchanger Manufacturers Association (9th Edition).

-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 Size Are Available Upon Agreement.

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.

Superheaters and reheaters are important parts for the heating surfaces, used to increase steam temperature, aiming to improve steam enthalpy and further to increase the thermal circulation efficiency for power station.

Superheaters work to heat surnatured steam to superheated steam with a certain tempetature. When boiler loads or other working conditions change, it is necessary to make sure superheated steam temperature to be normal, and within allowable range of temperature variation.

From the thermal circulation in power station, the original parameters of pressure and temperature is higher, the thermal efficiency of circulation is better, or the steam humidity of the steam turbine rear is too high, influencing its safety. While the superheaer steam temperature is limited by metal materials, at present, due to limitation of metal materials, superheated temperature for most power station boilers are still within the range of 540-555 dgrees, and to avoid the steam humidity of blade of steam turbine rear too big, thus middle reheating system is applied.

Product Name
Economizer for Boiler
Structure Type
Tube Coil Serpentine Coil
Tube Material
- Carbon Steel : 20#, 20G, A195, A-1
- Corten Class Low Alloy Steel : Corten Steel, ND Steel (09CrCuSb)
- Alloy Steel : 15CrMoG, T11
China GB, ASME
Manufacturer Grade
China A Grade, ABS Certificated, TUV Certificated
Tube Type
- Bare Tube
- Fin Tube
Tube Specification
As per Customer requirements
Tube Thickness
As per Customer requirements
Working Pressure
1.6 MPa ~ 13.2 MPa
Working Temperature
depends on material
Automatic GTAW (TIG) tube butt welding
Welding NDT
Automatic RT 100%

The Serpentine Tube Comply With The Following Standards:

1. ASTM A688/ASME SA688

2. ASTM A803/ASME SA803

3. ASTM A556/ASME SA556

Steel Grade:

FerriteAusteniteDuplexSuper DuplexNi-AlloysTitanium























Tube Of Other Alloys And Steel Grades Can Be Produced Upon Agreement.

Some of the quality tests carried out by us includes:

Corrosion TestConducted only when specially requested by the client
Chemical AnalysisTest done as per required quality standards
Destructive / Mechanical TestingTensile | Hardness | Flattening | Flare | Flange
Reverse-bend and Re. flat testsCarried 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 TestingDone to detect homogeneities in subsurface by using Digital Flaw-mark Testing System
Hydrostatic Testing100% 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 TestTo check any evidence of air leakage
Visual InspectionAfter 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

Product Tags:

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ASME SA179 Serpentine Coil tube

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