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Octagonal Shaped Steel Pipe

Special-shaped seamless steel pipe is widely used in various structural parts, tools and mechanical parts. Compared with round pipe, special-shaped pipe generally has larger inertia moment and section modulus, and has greater bending and torsion resistance, which can greatly reduce the weight of the structure and save steel. Specially shaped pipes are generally distinguished according to the cross section. According to the material, they can be divided into seamless steel pipe special-shaped pipes, aluminum alloy special-shaped pipes, and plastic special-shaped pipes. The following is mainly about steel pipe specials. The steel pipe special-shaped pipe can be divided into elliptical special-shaped steel pipe, triangular special-shaped steel pipe, hexagonal special-shaped steel pipe, rhombic special-shaped steel pipe, octagonal special-shaped steel pipe, semicircular special-shaped steel circle, unequal hexagonal special-shaped steel pipe, five-petal plum shaped special-shaped steel pipe, double-convex special-shaped steel pipe, double-concave special-shaped steel pipe, melon shaped special-shaped steel pipe, conical special-shaped steel pipe, corrugated special-shaped steel pipe.

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Product Details

Octagonal Shaped Steel Pipe are widely used in fields such as construction, decoration, and mechanical manufacturing. Due to its excellent support and load-bearing performance, octagonal steel pipes are particularly important in construction engineering and are commonly used in bridges and various situations that require pressure and bending

Product description:

Chemical composition:

component	C	Si	Mn	P	S	Cr	Ni	Mo
minimum value	0.17	-	0.65	-	-	0.35	0.4	0.15
Maximum value	0.23	0.4	0.95	0.035	0.035	0.7	0.7	0.25

Approximate comparison table:

GB	JIS	ISO	DIN EN/DIN	NF EN/NF	EN	Digital brand
20CrNiMoH	SNCM220 SNCM220H	20NiCrMo2-2 20NiCrMo2	21NiCrMo2	20NCD2	20NiCrMo2-2	1.6523

Product Parameter:

Production Range	Outer Diameter:6-530mm (0.24 inch – 21.18 inch)
Production Range	Wall Thickness:0.8-200mm (0.03 inch – 7.89 inch)
Material / Grade	Carbon Steel: GB/T 3094: 10#, 20#, 35#, 45#, 55#, Q235B, Q235C, CF53, A105 ASTM A519: 1010, 1020, 1026, 1035, 1045, 1050 DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: C10/CK10, C22/CK22, C35/CK35, C45/CK45, CF53 JIS3441/JIS3444/JIS3445: STKM11A, STKM12A/STKM12B/STKM12C, STKM13A/STKM13B/STKM13C JIS G4051: S10C, S20C, S25C, S35C, S45C, S55C
Material / Grade	Alloy Steel: GB/T 3094: 16Mn(Q345B), 20Cr, 40Cr, 15CrMo, 20CrMo, 28CrMo, 30CrMo, 35CrMo, 42CrMo, 20CrMnTi, 40MnMoV, 20Mn2, ZF6, 16MnCr5, 20MnCr5, 38Mn2V, 09CrCuSb(ND) ASTM A519: 5120, 5140, 4130, 4135, 4140 DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: ST52, EN10084-1998 20Cr4, 41Cr4, 15CrMo4, 25CrMo4, 35CrMo4, 42CrMo4, 16MnCr5 JIS3441/JIS3444/JIS3445: SCM432/SCRRM3, SCM4 JIS G4053: JIS SCr420, JIS SCr440, SCM415, SCM420
Tolerance	Can be customized according to customer's requirements
Technique	Cold Drawn / Cold Rolled
Shape	Triangle, Hexagon, Square, Rectangle, Octagon, Lemon Pipe and Others can be customized
Further Processing for Steel Tubes	Cutting, Chamfer, Threading, Inner diameter or Outer Diameter Lathe, Surface Shot Blasting, Laser Marking