Connection method of HDPE steel winding plastic pipe

HDPE plastic steel winding pipe

It is made of steel-plastic composite special-shaped strip through spiral winding welding (extrusion welding on the overlapping surface), and its inner wall is smooth and flat, and the specification is DN200-DN2600mm. This kind of pipe has the advantages of corrosion resistance, lightweight, easy installation, large flow rate, long life (50 years), etc. It can replace pipes made of high energy consumption materials (cement, cast iron, ceramics, etc.), and is an environmentally friendly green product.

Plastic steel winding mainly adopts stainless steel hoop connection

The stainless steel hoop connection is a connection method that uses mechanical fastening to connect the adjacent two ends into one. The connection structure is composed of three layers, the innermost layer is a thin-walled rubber sleeve, which is tightly sleeved to seal the pipe end; the middle layer is a certain thickness of foam rubber plate with good elasticity, which acts as a filling, and the outer layer is a stainless steel hoop. The tightening force of the fastening bolts on the stainless steel hoop compresses the inner rubber sleeve to achieve the sealing effect. The main function of the foam rubber plate is to evenly transmit the tight hoop pressure of the stainless steel hoop to the inner sealing rubber plate, thereby Eliminates the influence of factors such as the uneven surface of the pipe end, uneven fin height, and ellipticity on the sealing performance. This connection method is used for polyethylene plastic-steel winding drainage pipes with a pipe diameter less than or equal to 1200mm.

Advantages of clamp-type elastic connection for HDPE plastic-steel winding pipe

The connection requires no less than two welded plastic sealing blocks in the sealing area of the spiral groove at the connection part of the pipe end, and the height of the sealing block is the same as that of the reinforcing rib. The connection structure is composed of three layers, the innermost layer is a thin-walled rubber sleeve, which acts as a seal at the end of the pipe; the middle layer is a foamed rubber plate with a certain thickness and good elasticity, which acts as a filling, and through its deformation, The hoop pressure of the outer stainless steel loop is evenly transmitted to the inner sealing rubber plate, thereby eliminating the influence of factors such as the uneven surface of the pipe end, the uneven height of ribs and ellipse on the sealing performance; the outer layer is an open stainless steel loop The clamping force of the looper on the inner rubber sleeve can be adjusted through the fastening bolts on the looper to ensure the seal. At the same time, the stainless steel looper can compensate for the ring stiffness of the pipe connection part. In order to ensure that the stainless steel clamp has the same service life as the pipe, and undergoes secondary anti-corrosion processing.The stainless steel hoop connection is a connection method that uses mechanical fastening to connect two adjacent pipe ends into one. The connection structure is composed of three layers, the innermost layer is a thin-walled rubber sleeve, which is tightly sleeved on the pipe end to seal; the middle layer is a certain thickness of foam rubber plate with good elasticity, which acts as a filling, and the outer layer is a stainless steel hoop. The tightening force of the fastening bolts on the stainless steel hoop compresses the inner rubber sleeve to achieve the sealing effect. The main function of the foam rubber plate is to evenly transmit the tight hoop pressure of the stainless steel hoop to the inner sealing rubber plate, thereby Eliminates the influence of factors such as the uneven surface of the pipe end, uneven fin height, and ellipticity on the sealing performance. This connection method is suitable for plastic-steel winding pipes with pipe diameter Dn≤1200mm.

Connection method of HDPE plastic-steel winding pipe above DN1200mm

The electric melting belt connection is a connection method that uses the high temperature generated after the electric heating element embedded on the surface of the electric heating melting belt is energized to weld the pipe ends of the two plastic-steel winding pipes and the electric heating melting belt into a whole.

The electric melting belt connection is a connection method that uses the high temperature generated by the electric heating element embedded in the surface of the hot melting belt to fuse the contact surface into a whole. The electric melting belt is a plastic belt made of the same plastic as the pipe plastic, with a certain width, a thickness greater than the wall thickness of the pipe, and a length greater than the circumference of the pipe. One side of the plastic belt is inlaid with an electric heating wire mesh forming a circuit. Place the electric melting belt on the inner wall of the connected pipe end, use special tooling to press the electric heating melting belt tightly on the inner wall of the pipe, and use a special power supply to energize the electric heating melting belt. Due to the thermal effect of the current, the electric heating wire will connect the pipe wall and The surface of the hot-melt tape is melted to form a whole, and a reliable connection is formed after cooling. This connection method is suitable for plastic-steel winding pipes with pipe diameter Dn≥1200mm