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Industry News · Home > Industry News > JG 225-2007 Metal Corrugated Pipe Used in Prestressing Concrete

JG 225-2007 Metal Corrugated Pipe Used in Prestressing Concrete


访问人数:561  新闻作者:  新闻来源:  发布时间:2016/4/25 8:25:39
 

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JG 225-2007 Metal Corrugated Pipe Used in Prestressing Concrete


Metal prestressing corrugated pipe: there are alias metal corrugated pipe, metal helix tube, filling with concrete pipe, corrugated pipe used in foundation bolt. Adopting high quality of steel tape after pressure wave, reeling to tube, mouthpiece, cutting off and other production process.

 

Character: light, thin wall, high rigidity, unbroken, no leakage, firmly withno opening buckle, high bonding performance with concrete, high anti-seismic performance.

 

It is used for prestress concrete structure, construction member, prepared hole for construction, assort with anchorage of steel strand bundle, diameter of common prestress steel strand is 12.7mm and 15.2mm.

 

Type

Metal corrugated pipe is divided into standard and strengthen type according to rigidity, round and flat type according to shape of section, double wave and more wave type according to number of raised wave between two adjoining folded mouthpiece.

 

Requirement of radial rigidity for Metal prestress corrugated pipe

 

Shape of section

round

flat

Centralize

Loading/N

Standard

800

500

strengthen

Equispaced loading/N

Standard

F=0.31d ²

F=0.15d ²

strengthen

δ

Standard

d75mm

0.20

0.20

d75mm

0.15

strengthen

d75mm

0.10

0.15

d75mm

0.08

 

Requirement for anti-leakage performance:

after reaching to specified centralize loading and bending, cement paste is allowed water percolation without slurry.

 

Testing for Radia rigidity:

rigidity testing for centralize loading, rigidity testing for equispaced loading

 

                  

 

Radial rigidity

Centralize loading

Deformation of external diameter/mm

Deformation of internal diameterδ

Equispace loading

Deformation of external diameter/mm

Deformation of internal diameterδ

Anti-leakage testing after centralize loading

Bending anti-leakage testing

 

Machine

 

 


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