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DELLOK Chemical Industry Stud SA335 P91 Carbon Steel Seamless Tube

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DELLOK Chemical Industry Stud SA335 P91 Carbon Steel Seamless Tube
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Fin Tube Type: Studded Tubes/Stud Welding Tube
Tube OD: 219 Mm Max.
Tube Thickness: 4mm~15mm
Tube Length: 16 Meters Max.
Studs OD: OD6mm~OD16mm
Studs Height: 10mm Min.
High Light:

P91 Carbon Steel Seamless Tube


Stud SA335 Alloy Steel Pipe


SA335 Thick Wall Steel Pipe Seamless

Basic Infomation
Place of Origin: China
Brand Name: DELLOK
Certification: CE. ISO,EN10204. 3.1 Cert.
Model Number: Studs
Payment & Shipping Terms
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 within 5 weeks after order.
Payment Terms: L/C, T/T Contact us for details
Supply Ability: 60000 meters month
Product Description

Chemical Industry Stud SA335 P91 Carbon Steel Seamless Tube

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

Product Details


Carbon, stainless, and alloy steels.

Tube details:

Tube Thickness:4mm~15mm

Tube Length:16 meters max

Tube OD: 219 mm max

Studs Height:4mm~15mm

Studs OD:OD6mm~OD16mm

Production Capacity:

Daily capacity up to 80,000 studs;


Steel frame with plywoods or seaworthy wooden box.

Studs are fully automatically welded onto the tube by resistance welding. It has two types: Cylindrical or elliptical. It has many uses in Furnace, Chemical, Petrochemical industry, Power station etc. Besides, we provide the raw materials mill certificates, inspection and test samples results and warranty
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. And all the tubes are protected on surface with Oil dip, black coating or varnish.
Acceptance criteria
Approved drawings and the delivery conditions (TDC) of clients.


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)


Studs Type

Circular, elliptical, waist drum type

Please email us for more information as your request.

Competitive Advantage:
DELLOK Chemical Industry Stud SA335 P91 Carbon Steel Seamless Tube 0DELLOK Chemical Industry Stud SA335 P91 Carbon Steel Seamless Tube 1DELLOK Chemical Industry Stud SA335 P91 Carbon Steel Seamless Tube 2

  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.

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Get in touch with us
Contact Person : Pax Yang
Tel : +862569521609
Fax : 86-25-6952-5709
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