| Payment Type: | L/C,T/T |
| Incoterm: | FOB,CFR,CIF,EXW |
| Min. Order: | 5 Ton |
| Transportation: | Ocean |
| Port: | Tianjin Port,Qingdao Port,Qingdao Port |
Standard: Bs, Gb, Astm, Jis, Din, Api
Material: Q195-Q345, A53-A369, 10mowvnb, Stpa22-Stpa26, Stpg42, Mo, 15nicumonb5, 10cr9mo1vnb, 10#-45#, Stba20-Stba26, Crni Alloy, Mn-V Alloy, 16mn, St35-St52, Stb35-Stb42, Cr-Mo Alloy, Api J55-Api P110
Section Shape: Round
Place Of Origin: China
Application: Oil Pipe, Fluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, Chemical Fertilizer Pipe, Structure Pipe
Production Process: Hot Rolled
Certification: Bsi, Ce, Ul, Api
Surface Treatment: Galvanized
Special Tube: Thick Wall Pipe, Api Pipe, Emt Pipe
Whether Alloy: Is Alloy
Tolerance: ±1%
Category: Seamless Steel Pipe, Welded Steel Pipe, Square tubes, Spiral Welded Pipe
Processing Service: Bending, Welding, Decoiling, Punching, Cutting
Section Shape: Round
Length: 1-12meter
Out Diameter: 21.3mm-710mm
Wall Thickness: 4-120mm
| Selling Units | : | Ton |
| Package Type | : | Bundle Packing |
Square Hollow Carbon Steel pipes are hollow structural sections made of carbon steel. They have a square cross-section and are used in a variety of applications, including construction, engineering, and manufacturing. These pipes are known for their strength, durability, and resistance to corrosion. They are typically made from hot-rolled or cold-formed carbon steel and can be produced in a range of sizes and thicknesses. The ends of the pipes may be square, beveled, or plain, depending on the intended use. Square hollow carbon steel pipe are commonly used in the construction of buildings, bridges, and other structures, as well as in the manufacturing of machinery and equipment.
| Standard | API 5L psl1/psl2, ISO3183, BDIN2458, ASTM A139, A252, EN10219/EN10217, KS F4602, KS D3583 etc. |
| Sizes | 8" to 138" |
| Thickness | 4mm to 25.4mm |
| NDT Test | UT, RT, hydrostatic, |
| Beveled Edges | 30DEG,(-0, +5) |
| Length | max.24meters, |
| Surface treatment | Black painted/3PE/3PP/FBE/galvanizing etc. |
| Hot Expanded Ends | Available |
| Packing | Loosed PCS/nylon rope(for the coating pipes) |
| Transportation | by 20/40FT containers or by bulk vessels as per conditon |
| Pile shoe | OEM(for piling) |
| Mill Test Certificate | EN 10204/3.1, 3.2 |
| Third party inspection | SGS/BV/ITS |
| Payment Term | TT, LC at sight, DP etc. |
| Application | water/fluid transportation, piling, structural supports, dredging etc. |
| Short Description | Spiral welded pipe is manufactured from steel coil. The coil is unwound and then welded while it is being turned into the shape of the pipe. Changing the angle of the spiral and the thickness of the coil is all that is needed to change from one pipe size to another. The two sides of the double submerged arc weld penetrate the full thickness of the steel to ensure the strength of the finished pipe. Full scale tests have shown that high quality spiral welded pipe is as strong as API pipe. The strength and flexible manufacturing of spiral welded pipe make it the product of choice for a variety of applications. |
| Chemical Properties % | |||||||||
| Grade A | |||||||||
| C | Mn | P | S | Si | Cr | Cu | Mo | Ni | V |
| 0.25 | 0.27-0.93 | 0.035 | 0.035 | 0.1 | 0.4 | 0.4 | 0.15 | 0.4 | 0.08 |
| Grade B | |||||||||
| C | Mn | P | S | Si | Cr | Cu | Mo | Ni | V |
| 0.3 | 0.29-1.06 | 0.035 | 0.035 | 0.1 | 0.4 | 0.4 | 0.15 | 0.4 | 0.08 |
| Grade C | |||||||||
| C | Mn | P | S | Si | Cr | Cu | Mo | Ni | V |
| 0.35 | 0.29-1.06 | 0.035 | 0.035 | 0.1 | 0.4 | 0.4 | 0.15 | 0.4 | 0.08 |
| Mechanical Properties | |||
| | Grade A | Grade B | Grade C |
| Tensile strength | 330 | 415 | 485 |
| Yield strength | 205 | 240 | 275 |
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