| After-sales Service: | When Your Needs |
|---|---|
| Warranty: | When Your Needs |
| Type: | Welded |
| Technique: | ERW |
| Material: | Carbon Steel |
| Surface Treatment: | Galvanized |
| Samples: |
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Suppliers with verified business licenses
Audited Supplier S355/Q355b Hot Rolled ERW Square Rectangular Steel Pipes Price Black Carbon Steel Tube High Quality Black Square and Rectangular Steel Pipes and Tubes
Carbon steel seamless square tube is a kind of hollow square section light-weight thin-walled steel tube, also known as steel refrigeration bending section. It is a section steel with a square cross-section shape and size made of hot-rolled or cold-rolled strip or coil as the base material, cold bending, and then high-frequency welding. In addition to the thickening of the wall thickness of the hot-rolled extra-thick-walled square tube, its corner size and edge straightness have reached or even exceeded the level of the resistance-welded cold-formed square tube.
| Product Name | Carbon Steel Seamless Pipe |
| Material | A53(A.B)A106 (A. B).0345,16Mn, 10#, 20#,45# S235JR. S355JR, Q320,Q360,Q410,Q460,Q490 ASTMA252, Gr.2,Gr.3.ST37, ST42, ST52, GrB, X42 X46 X52 X5 X6 X65 X70. 30CrMo .etc |
| Wall Thickness | 2.5-75mm |
| Outer Diameter | 13.7-1219.2mm |
| Length | Length:Single random length/Double random length 5m-14m,5.8m,6m,10m-12m,12m or as customer's actual reques |
| Standard | API 5L, ASTM A53-2007, ASTM A671-2006, ASTM A252-1998, ASTM A450-1996, ASME B36.10M-2004, ASTM A523-1996, BS 1387, BS EN10296, BS ANSI B36.1 6323, BS 6363, BS EN10219, GB/T 3091-2001, GB/T 13793-1992, GB/T9711 |
| Section Shape | Square, Rectangular, Round, |
| Pipe Ends | Plain end/Beveled,protected by plastic caps on both ends, cut quare,grooved,threaded and coupling,etc. |
| Surface Treatment | 1. Galvanized,bare 2. PVC,Black and color painting 3. Transparent oil,anti-rust oil 4. According to clients requirement |
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REGULAR SIZE
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SIZE (OUTER DIAMETER)
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WALL THICKNESS
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LENGTH
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20x20 / 25x25
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1.2MM --2.75MM
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6M IN STOCK (OR CUSTOMIZED)
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30x30 / 20x40 / 30x40 / 25x40
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1.2MM -- 3.5MM
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6M IN STOCK (OR CUSTOMIZED)
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40x40 / 50x50
30x50 / 25x50 / 30x60 / 40x60
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1.2MM -- 4.75 MM
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6M IN STOCK (OR CUSTOMIZED)
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60x60 / 50x70 / 40x80 / 40x50
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1.2 MM -- 5.75 MM
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6M IN STOCK (OR CUSTOMIZED)
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70x70 / 60x80 / 50x80 / 100x40 / 50x90
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1.5MM -- 5.75 MM
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6M IN STOCK (OR CUSTOMIZED)
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75x75 / 80x80 / 90x90
60x100 / 50x100 / 120x60 / 100x80 / 60x90
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1.5MM -- 7.75 MM
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6M IN STOCK (OR CUSTOMIZED)
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100x100 / 120x80
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1.8MM -- 7.75 MM
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6M IN STOCK (OR CUSTOMIZED)
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120x120 / 130x130
180x80 / 160x80 / 100x150 / 140x80 / 140x60
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2.5MM -- 10.0 MM
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6M IN STOCK (OR CUSTOMIZED)
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140x140 / 150x150 / 100x180 / 200x100
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2.5MM -- 10.0 MM
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6M IN STOCK (OR CUSTOMIZED)
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160x160 / 180x180 / 200x150
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3.5MM -- 11.0 MM
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6M IN STOCK (OR CUSTOMIZED)
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200x200 / 250x150 / 100x250
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3.5MM -- 11.0 MM
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6M IN STOCK (OR CUSTOMIZED)
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250x250 / 250x200 / 300x150 / 300x200
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4.5MM -- 15.0 MM
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6M IN STOCK (OR CUSTOMIZED)
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300x300 / 350x200 / 350x250 /300x150
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4.5MM -- 15.0 MM
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6M IN STOCK (OR CUSTOMIZED)
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350x350
350x300 / 450x250 / 400x300 / 500x200
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4.5MM -- 15.75 MM
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6M IN STOCK (OR CUSTOMIZED)
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400x400 / 280x280
450x300 / 450x200 / 400x350 / 400x250 / 500x250 / 500x300
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4.5MM -- 15.75 MM
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6M IN STOCK (OR CUSTOMIZED)
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Suppliers with verified business licenses
Audited Supplier 
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