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Black Annealed Hollow Sections For Construction

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Black Annealed Hollow Sections For Construction

Brand Name : Jinxi Pipe

Model Number : Hollow Section

Certification : ISO 9001,BV,SGS,TUV,CE

Place of Origin : China

MOQ : 1

Price : 400 USD/TON

Payment Terms : L/C,D/A,D/P,T/T,Western Union,MoneyGram

Supply Ability : 1000000

Delivery Time : 7 dyas

Packaging Details : Package with new steel straps 3+2+3, with 2 slings per package for lifting

Product Name : Carbon Steel Square Tube, Square Carbon Hollow Section, Square Hollow Section

Black Annealed Hollow Sections Standard : ASTM A500

Black Annealed Hollow Sections Tube Type : Welded and Seamless

Black Annealed Hollow Sections OD : Square Hollow Section: 10mm*10mm - 500mm*500mm

Black Annealed Hollow Sections Thickness : 0.5mm - 20mm

Black Annealed Hollow Sections Length Range : 5.8/6/11.8/12/18 meters

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Black Annealed Hollow Sections For Construction


Specifications


Black annealing square steel tube hollow sections are high-performance structural components widely used in construction, manufacturing, and engineering applications. These tubes are made from quality carbon steel that undergoes a specialized heat treatment process known as annealing.


American Standard Standard Name
A500/A500M Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes



Black Annealed Hollow Sections Chemical Composition

Sources American Standard A500 / A500M TABLE 1 Chemical Requirements


Element Composition, %
Grades A, B and D Grace C
Heat Product Heat Product
Analysis Analysis Analysis Analysis
Carbon, max A 0.26 0.3 0.23 0.27
Manganese, max A 1.35 1.4 1.35 1.4
Phosphorus, max 0.035 0.045 0.035 0.045
Sulfur, max 0.035 0.045 0.035 0.045
Copper, min B 0.2 0.18 0.2 0.18
A For each reduction of 0.01 percentage point below the specified maximum for carbon, an increase of 0.06 percentage point above the specified maximum for manganese is permitted, up to a maximum of 1.50% by heat analysis and 1.60% by product analysis.
B If copper-containing steel is specified in the purchase order.



Black Annealed Hollow Sections Mechanical Properties

Sources American Standard A500 / A500M TABLE 2 Tensile Requirements


Round structural tubing

Grade A Grade B Grade C Grade D
Tensile strength, min, psi (MPa) 45,000 (310) 58,000 (400) 62,000 (425) 58,000 (400)
Yield strength, min, psi, (MPa) 33,000 (230) 42,000 (290) 46,000 (315) 36,000 (250)
Elongation in 2 in. (50 mm), min, %D 25A 23B 21C 23B
Shaped structural tubing

Grade A Grade B Grade C Grade D
Tensile strength, min, psi (MPa) 45,000 (310) 58,000 (400) 62,000 (425) 58,000 (400)
Yield strength, min, psi, (MPa) 39,000 (270) 46,000 (315) 50,000 (345) 36,000 (250)
Elongation in 2 in. (50 mm), min, %D 25A 23B 21C 23B
A Applies to specified wall thicknesses (t) equal to or greater than 0.120 in. (3.05 mm). For lighter specified wall thicknesses, the minimum elongation values shall be calculated by the formula: percent elongation in 2 in. (50mm) = 56t + 17.5, rounded to the nearest percent. For A500M use the following formula: 2.2t + 17.5, rounded to the nearest percent.
B Applies to specified wall thicknesses (t) equal to or greater than 0.180 in. (4.57 mm). For lighter specified wall thicknesses, the minimum elongation values shall be calculated by the formula: percent elongation in 2 in. (50 mm) = 61t + 12, rounded to the nearest percent. For A500M use the following formula: 2.4t + 12, rounded to the nearest percent.
C Applies to specified wall thicknesses (t) equal to or greater than 0.120 in. (3.05 mm). For lighter specified wall thicknesses, the minimum elongation values shall be by agreement with the manufacturer.
D The minimum elongation values specified apply only to tests performed prior to shipment of the tubing.



Black Annealed Hollow Sections Manufacturing Process


Black Annealed Hollow Sections For Construction



Black Annealed Hollow Sections Application


  • Automotive and Trailer Components
  • Structural Frameworks in Construction
  • General Engineering and Machinery
  • Fencing, Gates, and Architectural Railings
  • Electrical Conduits and Cable Management
  • Agricultural and Farming Equipment
  • Temporary Structures and Scaffolding
  • HVAC and Ventilation Systems
  • Retail Displays and Exhibition Stands
  • Renewable Energy Support Structures



Black Annealed Hollow Sections Packing & Loading


Hollow Section is transported in containers

Black Annealed Hollow Sections For Construction


Hollow Section is transported in containers

Black Annealed Hollow Sections For Construction




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