Iron Tube Square Steel Pipe Carbon Hollow Section Tube

Key Properties and Characteristics
High Strength-to-Weight Ratio: Very strong and rigid for its weight, making it efficient for structures.
Aesthetic and Modern Look: Clean lines and neat appearance are prized in modern architectural design.
Ease of Fabrication: Easy to weld, cut, drill, and machine compared to solid bar.
Uniformity: Consistent dimensions and properties along its entire length.
No Corrosion Resistance: Being carbon steel, it requires painting, powder coating, or galvanizing to prevent rust.
Common Applications
This product is incredibly versatile and is used in:
Construction & Architecture: Structural frames, support columns, handrails, balustrades, fencing, gates, and architectural features.
Manufacturing & Fabrication: Machine frames, safety guards, workbenches, conveyor systems, and support structures.
Furniture: Modern furniture frames for tables, chairs, benches, and shelving.
Automotive: Roll cages, chassis components, and custom bumpers.
Agricultural Equipment:

StandardAPI 5L, API 5CT, ASTM A106/A53, ASTM A519, JIS G 3441, JIS G3444, JIS G3445, DIN 2391, EN10305, EN10210, ASME SA106, SA192 SA210,
SA213,SA335, DIN17175, ASTM A179
Out Diameter10.3- 1016mm
Wall Thickness1.0-100mm
Pipe LengthFixed length, random length SRL, DRL or as required
Materialcarbon steel pipe
Steel GradeAPI 5L, GR B, X42, X46, X56, X60,X65,X70
ASTM A53.A106: GR A, GR B, GR C
ASME SA106: GR. A, GR.B, GR.C
ASME SA192: SA192
ASME SA209M: T1, T1a
ASME SA210: GR.A-Q, GR.C
ASME SA213: T2, T5,T9, T11, T12, T22
ASME SA335: P2, P5, P9, P11, P12, P22, P91
DIN7175: ST35.8,ST45.8,15Mo3, 13CrMo44
Heat TreatmentAnnealed: Bright annealed, Spheroidize annealed, Normalized, Stress relieved, Cold finished, Quenched and Tempered
SurfaceBlack paint, varnish, oil, galvanized
End Protector1. Plastic caps (small OD)

2. Iron protector (large OD)
ApplicationFluid pipe, oil pipe, gas pipe, structure pipe, boiler tubes
TestChemical Component Analysis, Mechanical Properties, Technical Properties, Exterior Size Inspection, Hydro static Test, X-ray Test.
RemarkSpecial design available according to requirement

tandard

Steel

Grade

Chemical composition, %

Tensile strength,

MPa

Yield strength, MPa

Elongation, %


C

Mn

P

S









MAX

MIN

API-5L

B

0.27

1.15

0.03

0.03

413

241

21.5-29.5




X42

0.29

1.25

0.03

0.03

413

289

21.5-29.5




X46

0.31

1.35

0.03

0.03

434

317

20.5-28.5




X52

0.31

1.35

0.03

0.03

455

358

19.5-27




X56

0.26

1.35

0.03

0.03

489

386

18.5-25.5




X60

0.26

1.35

0.03

0.03

517

413

17.5-24



StandardGradeChemical Components (%)Mechanical Properties
ASTM A53CMnPSTS(Mpa)YS(Mpa)
A≤0.25≤0.95≤0.05≤0.06≥330≥205
B≤0.30≤1.2≤0.05≤0.06≥415≥240
ASTM A106A≤0.300.29-1.06≤0.035≤0.035≥415≥240
B≤0.350.29-1.06≤0.035≤0.035≥485≥275
ASTM SA179A1790.06-0.180.27-0.63≤0.035≤0.035≥325≥180
ASTM SA192A1920.06-0.180.27-0.63≤0.035≤0.035≥325≥180
API 5L PSL1A0.220.90.030.03≥331≥207
B0.281.20.030.03≥414≥241
X420.281.30.030.03≥414≥290
X460.281.40.030.03≥434≥317
Pipe typesSizes(mm)TolerancesTypesApplication
Hot rolledOD<50±0.50mmStructure PurposesGeneral structure and mechanical
OD≥50±1%Liquid ServicesPetroleum, gas and others
WT<4±12.5%Low and Medium Pressure Boiler TubeSteam and boiler manufacturing
WT 4～20+15%, -12.5%Hydraulic Pillar ServiceHydraulic support
WT>20±12.5%Auto Semi-shaft CasingAuto sem-shaft casing

   

Shandong Tanggang Metal Products Co., Ltd. is located in Jinan, China's largest steel production base, adjacent to the ports of Tianjin and Qingdao. We manufacture and supply stainless steel, carbon steel, steel plates, steel pipes, galvanized steel coils, color-coated galvanized steel coils, and various profiles (rails, I-beams, H-beams, angles, etc.) year-round. We can also customize other metal products according to customer needs. Our annual export volume is approximately 1.1 million tons. We guarantee that almost all inquiries will be processed within three hours. We have a professional testing center equipped with advanced testing equipment and employing over ten technical experts and professional testing personnel. We provide chemical composition analysis, mechanical property testing, and microstructure analysis of steel, providing reliable assurance of product quality and supporting product research and development and improvement. All products are supplied in accordance with DIN/EN, ASTM/ASME, DIN, and JIS standards, and can be supplied according to customer-provided standards and technical specifications. Our clients include industries such as petroleum, chemical machinery, power generation, water treatment equipment, elevators, kitchenware, food processing, pressure vessels, and solar water heaters. Our business principles are: customer first, excellent quality, comprehensive product range, and reasonable pricing. Shandong Tanggang Metal Products Co., Ltd. sincerely hopes to establish long-term cooperative relationships with our customers for mutual benefit and common development

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