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Home > Products > Special Steel Products > Fin Tube > ASTM A335 P11 P22 P91 Studed Pipe


ASTM A335 P11 P22 P91 Studed Pipe
ASTM A335 P11 P22 P91 Studed Pipe
ASTM A335 P11 P22 P91 Studed Pipe
ASTM A335 P11 P22 P91 Studed Pipe
ASTM A335 P11 P22 P91 Studed Pipe

ASTM A335 P11 P22 P91 Studed Pipe

Payment Type: L/C,T/T,Money Gram
Incoterm: FOB,CFR,CIF
Min. Order: 1 Metric Ton
Delivery Time: 15 Days

Basic Info

    Model No.: Fin Tube

    Type: Seamless

    Certification: API, CE

    Application: Oil Pipe, Boiler Pipe

    Section Shape: Round

    Surface Treatment: Oiled

    Usage: Pipeline Transport, Thermal Equipment

Additional Info

    Packaging: Iron-Plywood Case Packing

    Brand: YUHONG

    Transportation: Ocean,Land,Air

    Place of Origin: China

    Certificate: ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008

    Port: Shanghai Sea Port,Ningbo Sea Port

Product Description

Yuhong Group has an own workshop which can provide the most professional manufacturing process of studed tubes for clients' oil refinery projects.

ASME SA335 P11 / P22 / P91 NPS 4''(114.3mm) studded pin heating tubes.

All the raw materials will be from biggest steel factoires, such as: Baosteel, Hengyang Steel, TPCO etc..

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/TP310S

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)


Studs Type Circular, elliptical, waist drum type

Please email us for more information as your request.

Competitive Advantage:

  1. We have more than 12,000 square meters workshop, including 5 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.

Looking for ideal ASTM A335 P11 Studed Tubing Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the ASTM A335 P9 Studed Pipe are quality guaranteed. We are China Origin Factory of ASTM A335 P22 Studed Tube. If you have any question, please feel free to contact us.

Product Categories : Special Steel Products > Fin Tube

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Luis Bao

Mr. Luis Bao


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Mobile Phone:+8618067371010Contact me with Whatsapp

Address:No.1 New World Building, NO.1018 Min'an Road, Yin Zhou District, Ningbo, Zhejiang