1.High quality with good performance.
2.Metal ducts making machine can produce all kinds of metal ducts such as inner diameter of 30mm, 40mm, 50mm, 40mm, 80mm, 90mm, 110mm to 140mm.
3.Flat metal making machine is a special machine to produce all kinds of flat metal ducts. 

It has been widely adopted by modern construction, especially used in pre-tension or post-tension for concrete constructions as building materials, such as bridge construction, railway and highway construction, buildings and channel construction, etc.  

1.  Metal bellows molding machine is the special equipment which manufactures the metal bellow for prestressing concrete, makes the galvanized steel strip coil into double wave shape then undercuts and swages to apply the bellows. 
2.  The bellows are mainly used for prestressing pore of post-stressing prestressing concrete bridges, large-scale construction etc. 
3.  The machine has the advantages of small volume, compact structure, high efficiency, simple operation, easy maintenance; is suitable for site or factory to focus on using. 
4.  The bellows quality accord with JG225-2007 prestressing concrete with metal spiral pipe the standard requirement, and has good seal performance, facilitating construction. 
5. Dynamo adopts the infinitely variable speeds, so the tube rate is high, and high quality.

Technical parameter of round metal bellows molding machine:

Parameter of round metal bellows molding machine
Item	Processing	Bellows	Specification of steel	Reel pipe scope	Power of	Power of	Overall	Weight
	speed	pitch	Thickness×Width	of diameter	main motor	Cutter bar	dimension
Unit	m/min	mm	mm	mm	KW	KW	m	Kg
Parameter	1~4	≥27	0.25~0.36X36±0.5	35~130	3	0.75	1.5X1.4X1	450

Technical parameter for flat metal ducts machine:

Parameter of flat metal bellows molding machine
Item	Processing	Bellows	Specification of steel	Reel pipe scope	Power of	Power of	Overall	Weight
	speed	pitch	ThicknessXWidth	of diameter	main motor	Cutter bar	dimension
Unit	m/min	mm	mm	mm	KW	KW	m	Kg
Parameter	1~4	≥27	0.25~0.36X36±0.5	35~130	3	0.75	1.5X1.4X1	450