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Large Diameter FRP Pipe

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Zhejiang
Validity to:
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Last update:
2022-04-29 09:45
Browse the number:
221

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Company Profile

Zhejiang Huafeng New Material Co., Ltd.

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Contact：zjhuafeng(Mr.)

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Area：Zhejiang

Address：Zhejiang

Website：http://www.cnhfpipe.com/ http://zjhuafeng.022nb.com/

Product Details

A large diameter FRP pipe is an advanced composite material pipe with a three-dimensional enhanced structure that is made by 3D printing technology and continuous filament winding processes. The pipe has not only the properties of hydraulics and corrosion resistance of plastic pipes but also has the mechanical properties of metal pipes. The products are widely used in fluid transportation fields such as municipal water supply and drainage, marine engineering, and petrochemical.

Process characteristics

large diameter FRP pipe adopts 3D printing technology (material addition manufacturing) to realize continuous and rapid forming of the pipeline by way of layer-by-layer superposition.

Equipment characteristics

Items	Technical index
specific	1.7~2.0
Circumferential tensile strength	80~550MPa
Axial tensile strength	20~120MPa
Circumferential bending modulus	10~32GPa
Circumferential elongation at rupture	1.3%~2.0%
Axial elongation at rupture	0.4%~1.2%
Manning coefficient	0.009
Hazen-Williams coefficient	150
Circumferential tensile strength safety facto	>6.3 times
Radial deformation	High stiffness pipe<4%, low stiffness pipe<5%
Operating temperature range	-40℃～50℃(Maximum temperature for special pipes is 110℃)
Coefficient of thermal expansion	Circumferential 1×10—5/℃, axial2×10—5/℃

Specification and Model of the Product

Nominal Diameter DN (mm): 600~4000;

Nominal Pressure PN(MPa) ≤ 3.2;

Nominal Stiffness SN(N/㎡)： 2500, 5000, 7500, 10000;

Pipe joint length L(m)：3, 6, 9, 10, 12, 18.

(Note: The above-mentioned are standard specifications and may also be made to orders.)

Performance features

GRP pipe has not only the hydraulic properties and corrosion resistance of plastic pipe, but also the mechanical properties of metal pipe.

Basic characteristics

(1) Light weight and high strength

Comparison table of parameters between GRP pipe and steel pipe

Pipe type	Specifications and models	Thickness	weight	Tensile strength	Stretch strength	Ring stiffness
GRP pipe	DN 1000	19	116	200~240	3800~4560	10000
Steel pipe	DN 1000	8	200	480	3840	8900

(2) Excellent hydraulic characteristics

Items	GRP pipe	Steel pipe	Concrete pipe
Manning coefficient	0.009	0.012	0.013
Hazen-Williams coefficient	150	120	110
Inner diameter	2000	2000	2000
The along-range resistance loss coefficient	0.002	0.002	0.002
Flow rate	6.21	4.97	4.56
Daily flow	53.6	42.9	39.4
Index of flow	1.00	0.80	0.74

(3) Corrosion preventive

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