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Q235b Black Square Steel Tube

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Supplier ASTM A36 A53 A192 Q235 Q235B 1045 4130 1020 Sch40 Black API 5L Gr. B Sch40s Grade B Welded Seamless Stainless Coated Carbon Steel Pipe Tube

Supplier ASTM A36 A53 A192 Q235 Q235B 1045 4130 1020 Sch40 Black API 5L Gr. B Sch40s Grade B Welded Seamless Stainless Coated Carbon Steel Pipe Tube

US $ 585-609 / Ton FOB
5 Tons (MOQ)
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Jiangsu Hengshuntai Steel Co., Ltd.

Jiangsu, China Since 2021
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Hot Sale Customized Sch 160 St12 Hot Cold Rolled Carbon Steel Seamless Square Pipe 36 Inch Structural Mild for Oil Gas

Hot Sale Customized Sch 160 St12 Hot Cold Rolled Carbon Steel Seamless Square Pipe 36 Inch Structural Mild for Oil Gas

US $ 600-658 / Ton FOB
5 Tons (MOQ)
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Shandong Hongtai Metal Products Co., Ltd.

Shandong, China Since 2021
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All Sizes Galvanized Black Color Square and Rectangular Carbon Steel Welded Tube

All Sizes Galvanized Black Color Square and Rectangular Carbon Steel Welded Tube

US $ 350-650 / Ton FOB
1 Ton (MOQ)
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Guangdong Shangfeng Steel Group Co., Ltd.

Guangdong, China Since 2024
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ASTM S400 Q235B Carbon Seamleess Steel Pipe Seamless Q195 3/8" 1 Inch 2'' Std Sch40 Sch60 Hot Rolled Round Shape Iron Pipe

ASTM S400 Q235B Carbon Seamleess Steel Pipe Seamless Q195 3/8" 1 Inch 2'' Std Sch40 Sch60 Hot Rolled Round Shape Iron Pipe

US $ 500-700 / Ton FOB
1 Ton (MOQ)
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Wuxi Jinbao Special Steel Co., Ltd.

Jiangsu, China Since 2023
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Hot Rolled Steel Tube Q195-Q345 Square/Rectangle for Construction

Hot Rolled Steel Tube Q195-Q345 Square/Rectangle for Construction

US $ 400-500 / Ton FOB
5 Tons (MOQ)
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Hunan Hengan Weiye Metal Products Co., Ltd.

Manufacturer/Factory & Trading Company

Hunan, China Since 2022
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Hollow Section Steel Pipe Q235B Q355b Square Rectangular Steel Pipes Price Per Ton

Hollow Section Steel Pipe Q235B Q355b Square Rectangular Steel Pipes Price Per Ton

US $ 620-650 / Ton FOB
25 Tons (MOQ)
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Tianjin Jinnuo Steel Pipe Co., Ltd.

Manufacturer/Factory & Trading Company

Tianjin, China Since 2022
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German Standard Material Ck45/Q345 Galvanized Square /Round Tubes/Pipe Welded Mild Steel Pipe

German Standard Material Ck45/Q345 Galvanized Square /Round Tubes/Pipe Welded Mild Steel Pipe

US $ 500-680 / Ton FOB
1 Ton (MOQ)
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Qingdao Liange Special Steel Co., Ltd.

Trading Company

Shandong, China Since 2021
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ASTM A252 A36 Q235B Q355b Q420b 20# 45# Schedule 80 6m 12m Round Section Carbon Steel Pipe Tubes

ASTM A252 A36 Q235B Q355b Q420b 20# 45# Schedule 80 6m 12m Round Section Carbon Steel Pipe Tubes

US $ 440-510 / Ton FOB
1 Ton (MOQ)
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Shandong Xinghuasheng Steel Group Co., Ltd

Shandong, China Since 2023
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Q235B Cold-Rolled Black Square Steel Pipe 20X20X1.5mm for Construction Structures GB Standard Anti-Corrosion

Q235B Cold-Rolled Black Square Steel Pipe 20X20X1.5mm for Construction Structures GB Standard Anti-Corrosion

US $ 560-600 / metric tons FOB
5 metric tons (MOQ)
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Credit Import and Export Trading Co., Ltd.

Manufacturer/Factory & Trading Company

Tianjin, China Since 2025
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Q235B As1163 / BS1387 Greenhouses Hot DIP Galvanized Carbon Steel Square Steel Pipe / Tube

Q235B As1163 / BS1387 Greenhouses Hot DIP Galvanized Carbon Steel Square Steel Pipe / Tube

US $ 500-550 / Ton FOB
1 Ton (MOQ)
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TIANJIN SHENGTENG INTERNATIONAL TRADING CO., LTD.

Tianjin, China Since 2018
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Hot-Sell Square Rectangular Steel Pipe

Hot-Sell Square Rectangular Steel Pipe

US $ 830-860 / tons FOB
30 tons (MOQ)
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Nanjing Evergrowing Resources Co., Limited

Jiangsu, China Since 2023
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China Manufacture Q345 20 45 Carbon Fiber Pipe Metal Tube Seamless Steel Pipe

China Manufacture Q345 20 45 Carbon Fiber Pipe Metal Tube Seamless Steel Pipe

US $ 500-1,000 / Ton FOB
5 Tons (MOQ)
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LIAOCHENG HUAJIAN STEEL CO., LTD.

Shandong, China Since 2016
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Zinc Plated Round Steel 20X20 -Galvanized Hanger 150X50 Tubing 14 Gauge 3X3 Square Tube Galvanized Pipe

Zinc Plated Round Steel 20X20 -Galvanized Hanger 150X50 Tubing 14 Gauge 3X3 Square Tube Galvanized Pipe

US $ 550-620 / Ton FOB
1 Ton (MOQ)
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Wuxi Jinsuyuan Metal Products Co., Ltd.

Trading Company

Jiangsu, China Since 2024
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Factory Cutting JIS Ss400 Steel Profile Ms S235jr Mild Square Tube and Rectangular Q235B Steel Pipe Square Steel Tube Pipe

Factory Cutting JIS Ss400 Steel Profile Ms S235jr Mild Square Tube and Rectangular Q235B Steel Pipe Square Steel Tube Pipe

US $ 600-800 / Ton FOB
1 Ton (MOQ)
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Wuxi Jinbao Special Steel Co., Ltd.

Jiangsu, China Since 2023
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Cold Drawn DIN St52 Mild Carbon Steel Seamless Square Pipes

Cold Drawn DIN St52 Mild Carbon Steel Seamless Square Pipes

US $ 500-680 / Ton FOB
1 Ton (MOQ)
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Qingdao Liange Special Steel Co., Ltd.

Trading Company

Shandong, China Since 2021
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Carbon Steel Rectangular Tube Round Tube A36 Q235B Q195, Q215, Q235 Q255, Q275 Hot Rolled Cold Rolled Anti-Corrosion Pressure Resistant Custom Sizes

Carbon Steel Rectangular Tube Round Tube A36 Q235B Q195, Q215, Q235 Q255, Q275 Hot Rolled Cold Rolled Anti-Corrosion Pressure Resistant Custom Sizes

US $ 430-446 / Ton FOB
1 Ton (MOQ)
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Shandong Juhuo Special Steel Co., Ltd

Trading Company

Shandong, China Since 2025
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Square Rectangular Steel Pipes Q235B Q355b

Square Rectangular Steel Pipes Q235B Q355b

US $ 620-650 / Ton FOB
25 Tons (MOQ)
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Tianjin Jinnuo Steel Pipe Co., Ltd.

Manufacturer/Factory & Trading Company

Tianjin, China Since 2022
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Boiler Pipe Hydraulic/Automobile Square Steel Tube ASTM A106/A106m API 5L Gr. B, A106 Q235B Shs, Q345b Rhs,

Boiler Pipe Hydraulic/Automobile Square Steel Tube ASTM A106/A106m API 5L Gr. B, A106 Q235B Shs, Q345b Rhs,

50 Tons (MOQ)
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Shanghai Hongxianghui Steel Manufacturing Co., Ltd.

Shanghai, China Since 2025
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ASTM A53/En 10219 HDG Steel Pipe - Seamless/Welded, Round/Square, Q235B/S355jr Material

ASTM A53/En 10219 HDG Steel Pipe - Seamless/Welded, Round/Square, Q235B/S355jr Material

US $ 620-650 / Ton FOB
25 Tons (MOQ)
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Hunan Hengan Weiye Metal Products Co., Ltd.

Manufacturer/Factory & Trading Company

Hunan, China Since 2022
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Smls Customized Seamless Steel Pipe ASTM A53 API 5L ERW Sch 40 Gas Oil Pipe Application 12m Square Welding Cutting

Smls Customized Seamless Steel Pipe ASTM A53 API 5L ERW Sch 40 Gas Oil Pipe Application 12m Square Welding Cutting

US $ 410-450 / Ton FOB
10 Tons (MOQ)
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Credit Import and Export Trading Co., Ltd.

Manufacturer/Factory & Trading Company

Tianjin, China Since 2025
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Large Quantities of Rectangular Tubes Can Be Customized in Size

Large Quantities of Rectangular Tubes Can Be Customized in Size

US $ 499-599 / Ton FOB
10 Tons (MOQ)
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LIAOCHENG HUAJIAN STEEL CO., LTD.

Shandong, China Since 2016
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Q235B Hollow Steel Square&Rectangular Welded Steel Pipes and Tubes

Q235B Hollow Steel Square&Rectangular Welded Steel Pipes and Tubes

US $ 620-680 / Ton FOB
1 Ton (MOQ)
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Zhejiang Zhong Ding Iron and Steel Co., Ltd.

Trading Company

Zhejiang, China Since 2022
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High Quality Welded Steel Pipe Gi ERW Carbon Tube Round Square Oil Pipe for Transportation Construction

High Quality Welded Steel Pipe Gi ERW Carbon Tube Round Square Oil Pipe for Transportation Construction

US $ 460-510 / Ton FOB
5 Tons (MOQ)
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Audited Supplier
Liaocheng Mingxing Pipe Manufacturing Co., Ltd.

Manufacturer/Factory & Trading Company

Shandong, China Since 2024
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About Q235b Black Square Steel Tube FAQ

  • QHow can I find trustworthy suppliers of steel pipes and tubes in China?

    The Q235b Black Square Steel Tube is a top choice in our Steel Pipe & Tube collection.When looking for reliable suppliers in China, consider using platform tools, attending industry exhibitions, and consulting business directories. Verify the supplier's qualifications, request samples, and conduct thorough due diligence to ensure product quality and delivery reliability.

  • QWhat are the common types of steel used in manufacturing steel pipes and tubes?

    Enhance your Steel Pipe & Tube setup with our premium Q235b Black Square Steel Tube.Steel pipes and tubes are often made using carbon steel, stainless steel, and alloy steel. Each type offers unique properties, such as strength, corrosion resistance, and heat resistance. It is essential to consult with a reputable supplier for guidance on the best material for your specific applications.

  • QWhat are the advantages of purchasing steel pipes and tubes in wholesale quantities?

    Our Q235b Black Square Steel Tube offers exceptional quality within the Steel Pipe & Tube category.Bulk purchasing of steel pipes and tubes offers cost savings, availability in large quantities, and consistent product quality. Wholesale orders often come with discounts and customization options, allowing you to procure high-quality materials from trusted suppliers at competitive prices.

Mild Carbon Steel Tube Q235B Square Hollow Section Carbon Iron Pipe

Mild Carbon Steel Tube Q235B Square Hollow Section Carbon Iron Pipe

US $ 800 / Ton FOB
1 Ton (MOQ)
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Jiangsu Xinyuanxing Metal Products Co., Ltd.

Trading Company

Jiangsu, China Since 2024
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ASTM Q235 Q355b S275 S275jr A53 St37 2-15mm Thickness Metal Round Tube Carbon Steel Tube for Transportation Ms Pipe

ASTM Q235 Q355b S275 S275jr A53 St37 2-15mm Thickness Metal Round Tube Carbon Steel Tube for Transportation Ms Pipe

US $ 520-850 / Ton FOB
1 Ton (MOQ)
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Wuxi Jinbao Special Steel Co., Ltd.

Jiangsu, China Since 2023
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Round A106 Gr. B A53 Square Tube Supply Welded Carbon Steel Pipe

Round A106 Gr. B A53 Square Tube Supply Welded Carbon Steel Pipe

US $ 580-660 / tons FOB
25 tons (MOQ)
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Audited Supplier
Lingchuang Iron and Steel Group Co., Ltd

Trading Company

Shandong, China Since 2023
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Q235 Square Metal Tube Square Tube Carbon Steel Pipe for Square Pipe Balcony Railing

Q235 Square Metal Tube Square Tube Carbon Steel Pipe for Square Pipe Balcony Railing

US $ 500-680 / Ton FOB
1 Ton (MOQ)
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Qingdao Liange Special Steel Co., Ltd.

Trading Company

Shandong, China Since 2021
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Hot-Rolled Black Square Tube Q235B 50X50mm for Structural Framing in Middle East

Hot-Rolled Black Square Tube Q235B 50X50mm for Structural Framing in Middle East

US $ 410-550 / metric tons FOB
10 metric tons (MOQ)
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Credit Import and Export Trading Co., Ltd.

Manufacturer/Factory & Trading Company

Tianjin, China Since 2025
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40X40X2.5 Square Tube Weight Q235B Square Metal Tube Hot Rolled Seamless Carbon Steel Tube

40X40X2.5 Square Tube Weight Q235B Square Metal Tube Hot Rolled Seamless Carbon Steel Tube

US $ 480-500 / Ton FOB
5 Tons (MOQ)
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Audited Supplier
Shandong Hongyan Metal Material Co., Ltd.

Trading Company

Shandong, China Since 2021
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25mm Thickness 80/S420nl/16mnr JIS Standard Mild Steel Square Pipe

25mm Thickness 80/S420nl/16mnr JIS Standard Mild Steel Square Pipe

US $ 528-580 / Ton FOB
1 Ton (MOQ)
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Shandong Xingtongda Steel Co., Ltd

Shandong, China Since 2024
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A500 Q235 Mild Steel Cold Formed Black or Galvanized Rectangular Square Steel Tube Hollow Section Steel Profile for Building

A500 Q235 Mild Steel Cold Formed Black or Galvanized Rectangular Square Steel Tube Hollow Section Steel Profile for Building

US $ 550-650 / Ton FOB
10 Tons (MOQ)
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LIAOCHENG HUAJIAN STEEL CO., LTD.

Shandong, China Since 2016
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Q235B Q345b Low Carbon Low Alloy Square Steel Pipe Tube

Q235B Q345b Low Carbon Low Alloy Square Steel Pipe Tube

US $ 500-510 / Ton FOB
25 Tons (MOQ)
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Audited Supplier
Tangshan Fengkuo Trading Co., Ltd.

Trading Company

Hebei, China Since 2022
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En10216 BS3605 Hot Rolled Steel DIN 1.7220 3in Sch40s A588 Gr. C Steel Facotry Cold Drawn S355jr Round Square Rectangle Seamless Iron Tube

En10216 BS3605 Hot Rolled Steel DIN 1.7220 3in Sch40s A588 Gr. C Steel Facotry Cold Drawn S355jr Round Square Rectangle Seamless Iron Tube

US $ 520-850 / Ton FOB
1 Ton (MOQ)
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Wuxi Jinbao Special Steel Co., Ltd.

Jiangsu, China Since 2023
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Carbon Square Tube Welded Seamless Galvanized Square Pipe

Carbon Square Tube Welded Seamless Galvanized Square Pipe

US $ 500-680 / Ton FOB
1 Ton (MOQ)
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Audited Supplier
Qingdao Liange Special Steel Co., Ltd.

Trading Company

Shandong, China Since 2021
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High Quality Black Galvanized Steel Welded Ms Rectangular Hollow Section Gi Square Tube

High Quality Black Galvanized Steel Welded Ms Rectangular Hollow Section Gi Square Tube

US $ 550-650 / Ton FOB
10 Tons (MOQ)
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Audited Supplier
LIAOCHENG HUAJIAN STEEL CO., LTD.

Shandong, China Since 2016
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Q195 Q215 Q235A Q235B Q235C Q235D Q255A Type B Rectangular Tube 0.8-12mm Thickness Hot Dipped Carbon Steel Pipe

Q195 Q215 Q235A Q235B Q235C Q235D Q255A Type B Rectangular Tube 0.8-12mm Thickness Hot Dipped Carbon Steel Pipe

US $ 1,000-2,000 / Ton FOB
1 Ton (MOQ)
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Audited Supplier
Wuxi Jinbao Special Steel Co., Ltd.

Jiangsu, China Since 2023
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