Processing And Application Of Spiral Steel Pipe

Before the ssaw steel pipe is bonded, apply a dry cloth to wipe the socket side and the outside of the socket. When the surface is sticky with oil, wipe it with acetone. When applying the adhesive, apply the inner side of the socket first, then apply the outside of the socket. When applying the socket, apply a proper amount from the inside to the outside in a uniform direction. Do not leak or apply excessive amount (200g/m2).

The section should be flat. The vertical pipe axis is chamfered; before the bonding, the inserted marking line should be drawn and the test insertion should be carried out. The test insertion depth can only be inserted into the original depth of 1/3~1/2. When the clearance is too large, it is strictly prohibited to use the adhesive. Connection method. After the adhesive is applied, it is advisable to keep the applied external force unchanged within 1 minute, and keep the straightness and position of the interface correct.

After the spiral steel pipe is bonded, the excess adhesive will be wiped out in time, and it shall not be stressed or forcibly loaded during the curing time. Connection procedure: preparation? cleaning the working surface? trial insertion? brush adhesive? bonding? curing Bonded joints shall not be applied in rain or water, and shall not be operated below 5 °C.

The two-step propulsion pipe expanding machine adopts the taper die expanding technology, the digital intermediate frequency induction heating technology, the hydraulic technology in one machine, with its reasonable process, low energy consumption, low construction investment, good product quality, wide range of raw materials and product specifications, flexible, easy to change, low-input production batch adaptability, replacing the traditional pull-type expansion technology of the steel pipe industry.

Due to the difficulty in solving the supply of large-diameter steel pipes in the near future, spiral Steel pipe has become an important source of products for solving the shortage of large-diameter steel pipes in China, which has alleviated the tight supply situation in the large-diameter steel pipe market.

The thermal expansion is limited to the seamless steel pipe specifications. According to the needs of the end consumers, the spiral steel pipe is born. The spiral steel pipe specifications are relatively random, and are generally made according to the needs of customers. The spiral steel pipe is what we often say. The heat expansion tube, the steel tube with low density but strong shrinkage, (seamless steel tube) can be simply referred to as heat expansion tube. The diameter of the tube is enlarged by the cross-rolling method or the drawing method.