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SQUARE/RETANGULAR PIPE/TUBE

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Square Rectangular Alloy Pipe /SUPER HAVEY WALL SEAMLESS & WELDED  

Square Rectangular Alloy Pipe

 

Description

Square and rectangular alloy pipes and tubes are widely used for structural fabrication, mechanical components, equipment frames and industrial construction where structural strength, dimensional accuracy and corrosion resistance are required. These hollow sections are available in stainless steel, duplex stainless steel and alloy steel materials for engineering and industrial applications.

Square Rectangular Alloy Pipe and tube are commonly supplied for fabrication, offshore structures, equipment manufacturing, mechanical structures and industrial projects where reliable materials and consistent dimensions are important for fabrication and installation.

 

Product Name
Square / Rectangle Stainless Steel Pipe/Tube
Surface
N0.1, N0.4, 2D, 2B, HL, BA, 6K, 8K, Mirror,etc
Material
201,202,301,302,303,304,304L,304N1,309S,310S,316,316L,316Ti,316N,317,317L,321,409L,410,420,430,904,904L,etc
Grade
200/300/400/500/600/700/800/900 series/duplex stainless steel
Standards
AISI ASTM ASME  JIS SUS DIN GB

 

Size Range

Square Tube Rectangle Tube
Size(mm) (WXH) Wall Thickness (mm) Size(mm) (WXH) Wall Thickness (mm)
20*20 1.2-3.0 　 1.2-3.0
25*25 20*40               30*40
30*30 　
40*40  1.2-4.75 30*50              25*50  1.2-4.75
50*50 30*60              40*60
70*70            75*75  1.5-5.75 60*80              50*80  1.5-5.75
80*80            90*90  100*40              120*80
100*100 　
120*120        2.5-10.0 160*80            100*150     2.5-10.0
140*140  140*80           100*180 
150*150 200*100
　 　 　
160*160      180*180  3.5-12.0 200*150             250*150 3.5-12.0
200*200
4.5-15.75 250*200             300*200  4.5-15.75
250*250   350*200            350*250 
 300*300  450*250            400*300 
350*350 500*200
　 　 　
　 5.0-20.0 400*350             400*250  5.0-20.0
280*280  500*250            500*300 
400*400 400*600
Tailor-made dimensions are available upon requrest

 

 

Manufacturing Process

Square Rectangular Alloy Pipe and tube and tubes are manufactured using forming and welding processes followed by heat treatment and finishing operations when required.

Typical manufacturing processes include:

  • Hot forming or cold forming
  • Welding and sizing
  • Heat treatment (solution annealing or normalizing where applicable)
  • Straightening and sizing
  • Surface finishing
  • Cutting to length
  • Marking and traceability identification

All manufacturing processes are controlled to ensure dimensional accuracy, weld integrity and material properties in accordance with applicable standards.

Inspection & Testing

Square Rectangular Alloy Pipe and tube Inspection and testing can be carried out in accordance with project specifications, international standards and customer requirements.

Inspection and testing may include:

  • PMI (Positive Material Identification)
  • Visual and dimensional inspection
  • Ultrasonic testing (UT)
  • Radiographic testing (RT) where required
  • Hydrostatic testing
  • Mechanical testing
  • Hardness testing
  • Intergranular corrosion testing where required
  • Third-party inspection (SGS, BV, TUV, DNV, Lloyd’s)

Square Rectangular Alloy Pipe and tube can be supplied with full inspection documentation and EN 10204 certification.

Applications / Industries

Application

Square and rectangular alloy pipes and tubes are commonly used in structural and mechanical applications across various industries.

Typical applications include:

  • Structural fabrication
  • Offshore structures
  • Equipment frames and skids
  • Mechanical structures
  • Industrial platforms and walkways
  • Machinery and equipment fabrication
  • Power plant structures
  • Petrochemical and industrial facilities
  • Shipbuilding and marine structures

These materials are selected where structural strength, corrosion resistance and fabrication reliability are required.

 

Packaging & Delivery

Square Rectangular Alloy Pipe and tube are packed to ensure protection during transportation and storage, especially for export shipments and project deliveries.

Typical packaging includes:

  • Bundled with steel straps
  • Wooden cases or wooden pallets
  • End protection where required
  • Waterproof wrapping
  • Export seaworthy packing
  • Marking according to project or customer requirements

Delivery can be arranged by container shipment, break bulk shipment or project cargo delivery depending on material size and project requirements.

Why Choose Us

Shawwinox supplies square and rectangular alloy pipes and tubes as part of our industrial alloy materials supply scope for engineering and industrial projects.

Our advantages include:

  • Supply of stainless steel, duplex and nickel alloy materials
  • Support for project material supply and documentation
  • Coordination of inspection and third-party testing
  • Supply for both small quantity orders and large project orders
  • Material traceability and inspection documentation support
  • Experience supporting industrial and EPC project material supply
  • Integrated supply chain support for alloy materials and piping materials

We support customers not only as a material supplier, but as a supply chain partner supporting industrial projects from material sourcing to final delivery.

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