| 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 Shs ASTM A500 A36 Ms Carbon Iron Rectangular Welded Steel Tube Mild A53 Rhs Hollow Section Hot Rolled Black Square Steel Pipe
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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