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Characteristic of galvanized steel helical Corrugated Pipe Culvert

2020-12-11
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 galvanized steel helical Corrugated Pipe Culvert (1).jpg

Characteristic of galvanized steel helical Corrugated Pipe Culvert


Specification 

Pipe diameter: 300-2500mm

Length: 1-12m

Thickness: 1.6-3.2mm


High strength

It with more than 1.5 times compression strength than the concrete pipe because of the corrugation structure


Easy for transport

The weight of the corrugated steel pipe is only 1/10~1/5 of same size concrete pipe, even can be carried by people without machine.


Install in shorter time

The steel corrugated culvert is connect by clamping band flange, the length can be make according to the customers’ request, then easy to install, can be installed in shorter time.


Long service life

The steel corrugated culvert pipe adopt 300-600g/m2 galvanization steel plate, normally its servise life is 50-100 years, if in the strong corrosion environment, painting asphalt on the in out surface of the pipe, can enlong 20-50 years based on the normal service life.


Economic 

The standard length is 6m, simple connection, shorter working time. Because it is light, easy for transport, with few foundation construction, lower fee on drain pipe. For example, we make comparison on steel corrugated culvert pipe concrete pipe in diameter 800mm, corrugated steel culvert pipe is only need about 90% if concrete pipe fee, it can save cost of forklift, crane, other machines when the transport is good.


Cross section shape size of galvanized steel helical corrugated culvert pipe

Normally, the cross section is round shape, corrugation is 68X13mm, 125X25mm


Application of helical corrugated steel culvert pipe

The helical corrugated steel culvert pipe is used in municipal drainage,building outside drainage, farm drainage, industry drain system, also adopt in road railway closed conduit culvert, shell of vertical pile, rain water collection, etc


Drainage: domestic sewage, golf course drain, underground garage, factory drain, factory, airport water drain.

Culvert: drain-pipe under the road, higher cross drain-pipe, underground culvert of railway, small tunnel, closed conduit, small bridge.

Protection shell: underground communication cable, protection pipe for gas pipe, also can be adopted on construction site, protection shed, etc

Industry: air conduit for gas in coal mine (negative pressure)

Farm: driven well wall for farm, invert siphon for irrigation,  farm water drain.


Structure

Corrugated culvert pipe is treatment by galvanized steel belt spiral seaming joint

The diameter is smaller than 1m, adopt corrugation 68X13mm, each section standard length is 6m, diameter is bigger than 1m,adopt corrugation 125X25mm, each section standard length is 6m, can make difference size as per clients’ request±±±±

Corrugated culvert pipe connection by two more pieces of clamping band flange, inlay PE plate sealant rubber gasket, fasten by high strength bolts.


Material

The steel plate is DX52D SGHC, chemical mechanical property should be accord with EN10327 JIS G 3302-2010, steel plate size tolerance should be accord with GB/T-709

Clamping band angle steel material is Q235, chemical mechanical property should be accord with GB/T700

Clamping band angle steel fastener need to adopt high strength bolts, nuts, the grand should be higher than 8.8, its property should be accord with GB/T1231

Corrugated pipe adopt hot galvanized steel belt for forming, after forming then hot galvanization treatment.


Appearance

Clean, smooth, the zinc coating uniformity.


Clamping band request

Connect pipe sections by clamping band, keep the pipe sections point at pipe sections, prevent separate, the bottom permeate the filling back material permeate.

Drawing 3  classic clamping band system

When assemble the clamping band, lap over connect to each pipe section equally.

When fastening, the length width of the part which over lap to the pipe have to can bearing the tightening force.

When assemble the clamp band, make sure the gap between two pipe section can be more than 25mm.

Clamp band width is 440mm

(remarks: normally, the clamp band is two pieces, for the big diameter, maybe need 3 pieces more)


Angle steel connection request 

Angle steel adopt Q235 steel

Flange is made by bending the angle steel, manual electric-arc welding drilling holes.

Corrugated pipe welding angle steel flange adopt manual electric-arc welding.

Corrugated pipe both end welding flange.

Inner diameter is 1m smaller than 1m, the pipe flange edge is in length 56mm, thickness 6mm equal-sided angle steel, other flange adopt in edge length 70mm, thickness 6mm equal-sided angle steel, for the big pressure, adopte width 70mm, thickness 6mm flat steel.

After welding flange, the inside outside welding seam painting Dacromet under normal temperature.


wall thickness
           
           Diameter
2.0mm2.75mm3.0mm3.75mm4.75mm
6000mm
           min:0.3m  max:43m

           Min:0.3m  Max:58m

           Min:0.3m  Max:61m

           Min:0.3m  Max:61m

7000mm
           Min:0.3m  Max:35m

           Min:0.3m  Max:53m

           Min:0.3m  Max:53m

           Min:0.3m  Max:57m

8000mm
           Min:0.3m  Max:31m

           Min:0.3m  Max:46m

           Min:0.3m  Max:50m

           Min:0.3m  Max:50m

10000mm
           Min:0.3m  Max:25m

           Min:0.3m  Max:36m

           Min:0.3m  Max:38m

           Min:0.3m  Max:38m

12000mm
           Min:0.5m  Max:18m

           Min:0.5m  Max:29m

           Min:0.5m  Max:32m

           Min:0.5m  Max:32m

           Min:0.5m  Max:32m
14000mm

           Min:0.5m  Max:28m

           Min:0.5m  Max:30m

           Min:0.5m  Max:30m

           Min:0.5m  Max:30m
15000mm

           Min:0.5m  Max:23m

           Min:0.5m  Max:25m

           Min:0.5m  Max:25m

           Min:0.5m  Max:25m
16000mm

           Min:0.5m  Max:16m

           Min:0.5m  Max:18m

           Min:0.5m  Max:30m

           Min:0.5m  Max:32m
18000mm

           Min:0.5m  Max:20m

           Min:0.5m  Max:24m

           Min:0.5m  Max:28m

           Min:0.5m  Max:30m
20000mm

           Min:0.5m  Max:18m

           Min:0.5m  Max:22m

           Min:0.5m  Max:28m

           Min:0.5m  Max:30m
Tips:
           1.the data of sheet means depth of fill, named min max;

           2.different diameter, thickness,length other size are available, accroding to your requirement.


 


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