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20# Galvanized Square Steel Tube

FOB Price

USD $500 - $800 / Ton

2 Tons(Min.Order)

Supply Ability 12500 Ton / Tons per Month
Port Tianjin/Qingdao China
Payment Terms:T/T L/C D/P D/A Credit Card PayPal

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Product Details

Thickness:	1.0, 35.0
Section Shape:	Square	Outer Diameter:	20x20-600x600mm	Place of Origin:	Shandong, China
Secondary Or Not:	Non-secondary	Application:	Structure Pipe	Technique:	Extruded
Certification:	CE	Surface Treatment:	Galvanized	Special Pipe:	Thick Wall Pipe
Alloy Or Not:	Non-alloy

Product Description

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Email: steelpipeexport (at)

Skype: sdxdcathy

WhatsApp:18905315739

Wechat:554717325

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20# Galvanized Square Steel Tube

1. Manufacturing Process:

Round to square: make continuous angle deformation of cold-rolled or hot-rolled steel plate directly, and then by high frequency welding form a round steel tube forming method, though the reshaping

finally form a rectangular steel tube forming method. Also known as round to square method.

2. Technical requirements:

1). Chemical Composition:

Yield Strength Grade	Demotic Raw-material Grade
235	Q235B, Q235C, Q235D, Q235qC, Q235qD
345	Q345A, Q345B,Q345C,Q345D,Q345Qc, Q345Qd, StE355, B480GNQR

Carbon Equivalent

Ceq(%)=C+Mn/6+Si/24 +Ni/40+Cr/5+Mo/4+V/14

Ⅰgrade product Ceq(%)

Yield Strength Grade	235	345	390
Ceq(%)	≤0.36	≤0.43	≤0.45
Note: In order to improve the performance of steel,390 could add the microelement such as V, Nb, Ti, Mo and N etc.

2). Mechanical Property:

Yield Strength Grade	W.T (mm)	Yield Strength (Mpa)	Tensile Strength (Mpa)	Elongation (%)	(20°C) Impact Value J
235	4~12>12~22	≥235	≥375	≥23	≥27
345	4~12>12~22	≥345	≥470	≥21	≥27
390	4~12>12~22	≥390	≥490	≥19	≥27

3). ⅠGrade Product Yield Strength:

Yield Strength Grade	Outside perimeter (mm)	Wall Thickness (mm)	Yield Strength %
			Directly to Square	Round to Square
235	≥800	12~22	≤80	≤90
345
390			≤85	≤90
Note: when the outer perimeter less than 800mm,can be determined by supply and buyer

3.Application:

1. Machinery manufacture: glass machinery, agricultural machinery, textile machinery, papermaking machinery,

food machinery, electrical equipment, sanitation equipment.

2. Roads and Bridges: railway, aviation, expressway, overpass, road fence, traffic signs.

3. Construction Engineering: steel structure construction, sports venue, three-dimensional garage, exhibition hall.

4. Decoration: wrought iron doors and windows, outdoor advertising, pavilion and vestibule, glass curtain wall.

5. Transportation: automobile manufacture, ship manufacture, container, tricycle, tower crane.

4.Surface Treatment

Contact Us

Jinan Xin Jiyuan Special Section Tube Co., Ltd.: Contact nameCathy Zhao
Chat Now; Phone86-531-85736315; AddressDaweizhuang, West of North Head of Erhuan West Road, Tianqiao District

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Carbon steel pipe	Chemical steel pipe	Decoration steel tube	Dilute Alloy square tube and rectangular tube
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Stainless steel square/rectangular tube	Structure steel tube	Welded steel tube

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20# Galvanized Square Steel Tube

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