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Square Hollow Carbon Steel Pipe
Square Hollow Carbon Steel Pipe
Square Hollow Carbon Steel Pipe
Square Hollow Carbon Steel Pipe
Square Hollow Carbon Steel Pipe
Square Hollow Carbon Steel Pipe
Square Hollow Carbon Steel Pipe
Square Hollow Carbon Steel Pipe
Square Hollow Carbon Steel Pipe

Square Hollow Carbon Steel Pipe

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Payment Type:L/C,T/T
Incoterm:FOB,CFR,CIF,EXW
Min. Order:5 Ton
Transportation:Ocean
Port:Tianjin Port,Qingdao Port,Qingdao Port
Product Attributes

StandardBs, Gb, Astm, Jis, Din, Api

MaterialQ195-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 ShapeRound

Place Of OriginChina

ApplicationOil Pipe, Fluid Pipe, Boiler Pipe, Drill Pipe, Hydraulic Pipe, Gas Pipe, Chemical Fertilizer Pipe, Structure Pipe

Production ProcessHot Rolled

CertificationBsi, Ce, Ul, Api

Surface TreatmentGalvanized

Special TubeThick Wall Pipe, Api Pipe, Emt Pipe

Whether AlloyIs Alloy

Tolerance±1%

CategorySeamless Steel Pipe, Welded Steel Pipe, Square tubes, Spiral Welded Pipe

Processing ServiceBending, Welding, Decoiling, Punching, Cutting

Section ShapeRound

Length1-12meter

Out Diameter21.3mm-710mm

Wall Thickness4-120mm

Packaging & Delivery
Selling Units : Ton
Package Type : Bundle Packing

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Product Description


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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