Product name: GGW-50S steel-plastic compound steel tube bending testing machine
Product introduction
This testing machine is specially used for the plane bending test on steel-plastic compound steel tube. GGW-50S “steel-plastic compound steel tube bending testing machine” developed by our company and China Academy of Building Research in accordance with GB/T244-2008 /ISO8491: 1998 Metallic Tube Test Method applies to the bending test methods for the steel-plastic tube with nominal diameter no larger than 50mm (≤DN50mm) stipulated in GB/T28897-2012 Steel Pipes of Complex Plastic. This product is widely applied to bending performance tests of metallic tube by test units, metallic tube plants and pipeline enterprises. GGW-50S steel-plastic compound steel tube bending testing machine is a product developed on the basis of GW-40 steel bar bending testing machine, and for steel-plastic compound steel tube specimens of different nominal diameters, just change corresponding bending core bushings, adjust the bending radius and change rollers. With reliable precision, ease of use and long service life, this equipment is the most perfect steel-plastic compound steel tube bending testing machine at present.
Technical parameters

Item	GGW-50S
Nominal diameter range of bending steel pipe (DN)	DN15(Φ21) ,DN20(Φ26) ,DN25(Φ33) ,DN32(Φ42), DN40(Φ48) , DN50(Φ60) Bending test methods for the steel-plastic tube with nominal diameter no larger than 50mm (≤DN50mm) stipulated in GB/T28897-2012 Steel Pipes of Complex Plastic.
Bending angle of steel tube	Freely set within the range of 0°-90°
Working rotation speed of roller	≤1.4 r/min
Control accuracy of bending angle	±1.5°
Power of motor	1.5kw
R of equipped bending core bushing for steel tube (8 times of the diameter) Bending roller	Φ21mm×8≈168mm；Φ26mm×8≈208mm；Φ33mm×8≈264mm； Φ42mm×8≈336mm；Φ48mm×8≈384mm；Φ60mm×8≈480mm
Radius of roller	R10、 R13、 R16.5、R21、R24、R30
Test control method	1. Manual control: The specimen bending test is controlled manually, and the bending angle is manually controlled during the bending process; 2. Automatic control: The bending test is automatically controlled by the equipment, and the bending angle can be set, and during bending process, the angle is displayed in real time, and the equipment will automatically stop when the bending angle reaches the set angle.
Boundary dimension of complete machine	970X760X1170mm
Weight	1000kg