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Contact Person : Jennifer
Phone Number : +86-1381 2020 947
WhatsApp : +8613812020947

High Precision Petrochemical industry Studded Tubes NPS 4'' 114.3mm

Place of Origin China.Imported materials are available
Brand Name Reliance
Certification CE,ISO...
Model Number Studs
Minimum Order Quantity N/A
Price N/A
Packaging Details (1) Waterproof steel frame bundle with each end capped; (2) Steel frame case sealed by plywoods with each end capped.
Delivery Time Ex-work with 5 week on receipt of order.
Payment Terms T/T, L/C
Supply Ability Daily capacity up to 80,000 Studs
Product Details
Compamy Type Manufacturer, Importer & Exporter Fin Tube Type Studded Tubes/Stud Welding Tube
Fins Type Round,Oval,Pin Origin China
Nearest Port Shanghai Port, China Recent Buyer From Korea In Oct In 2014
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Studded Tubes


Stud pipe

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Product Description

SA335 P11 / P22 / P91 from BaoSteel , NPS 4''(114.3mm) studded pin heating tubes


ASTM A335/A335M: Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service


General Studded Tubes production capacity

General specifications of Studded Tubes tubes

Production facility: 3 finning machines;

Daily capacity up to 80,000 studs;

Tube OD: 219 mm max.

Tube Thickness: 4mm~15mm

Tube Length: 16 meters max.

Studs OD: OD6mm~OD16mm

Studs Height: 10mm Min.



Manufacturing process:

Studs are fully automatically welded onto the tube by resistance welding.


Acceptance criteria

Approved drawings and the delivery conditions (TDC) of clients.


Delivery condition

Tube ends are square cut, free burrs, internally dried and air blown clean, externally coated with varnish at both ends of extruded bimetallic fin tube.


Surface Protection:

Oil dip, black coating or varnish.


Type of Studs

Cylindrical or elliptical



It shall include raw materials mill certificates, inspection and test samples results and warranty certificate of manufacturer.



  1. Furnace
  2. Chemical
  3. Petrochemical industry
  4. Power station etc.




Items General Materials Popular ASTM /ASME Materials
Core Tube Material

 Carbon Steel 

 Alloy Steel

 Heat  Resistant Steel,

 Stainless Steel

1. Carbon Steel: A106 Gr. B

2. Stainless Steel: TP304/304L,TP316/TP316L, TP347

3. Alloy Steel: P5,T5,P9,T9,T11,T22



 Carbon Steel 

 Stainless Steel

1. Carbon Steel 

2. Stainless Steel: 

     TP409/410,TP304/304L,TP316/TP316L, TP321/TP321L


Dimensions Data Sheet We're Supplying.

  General Descriptions of Studded tubes

Popular Specifications we make

Tube OD(mm)


Tube Wall Thickness(mm)


Tube Length(mm)

16,000mm Max.

Studs OD(mm)


Studs Height(mm)


Please email us for more information as your request.



Competitive Advantage:

  1. We have more than 10,000 square meters workshop, including 3 finning machines, daily extrusion capacity up to 80,000 studs.
  2. Shanghai Port is our nearest seaport and airport, less than 2 hours’ drive away from our workshop, convenient transportation.
  3. Due to their high rigidity, studded tubes can be used even under extreme temperature and pressure conditions.