– C250 Class ( ＜ 250KN or 25MT )
– D400 Class ( ＜ 400KN or 40MT )
– E600 Class ( ＜ 600KN or 60MT )
1) Flat Top Series
* Ductile Iron * Flat Top * Hinge Type
2) Dish-Shape Top Series
* Ductile Iron * Dish-Shape Top * Hinge Type
3) V-Shape Top Series
* Ductile Iron
* V-shape Top
* Hinge Type
4) Continuous Grating Series
* Ductile Iron
* Flat Top
* Continuous gratings
1) Flat Top Series
* Ductile Iron
* Flat Top
* Without Hinge
1) Flat Top Series
* Ductile Iron
* Flat Top
* Hinge Type
* Lockable with screw