PSP steel plastic composite pressure pipe can be customized. Please contact customer service before placing an order

タイトルまたは説明

PSP steel plastic composite pressure pipe is made of welded steel pipe as the intermediate layer, polyethylene (propylene) plastic as the inner and outer layers, and special hot melt adhesive is used. The pipe is compounded into one by extrusion molding method. In the prior art, for PSP steel plastic composite pressure pipe, the connection mode between the socket and plastic pipe mainly relies on electromagnetic heating between the metal pipe inside the pipe and the metal ring on the inner wall of the pipe fitting to achieve double-sided fusion bonding at the socket. However, this connection mode is difficult in construction, and the two contact surfaces do not self melt. Polyethylene or polypropylene are fused together by heating the steel strip pipe and the internal fixed metal sleeve in the electrical frequency environment, When the temperature is low, the two cannot be fused as a whole. When the temperature is high, polyethylene or polypropylene will carbonize, and at the same time, it will inevitably flow outward to form a hole with only the steel strip pipe left, resulting in insufficient connection strength, cracks and other defects. In serious cases, it will even lead to low peel strength of the socket, or even looseness, and large area of water leakage. Compared with the prior art, the electromagnetic four sided hot melt connection structure of PSP steel plastic composite pressure pipe enables the internal and external walls of PSP steel plastic composite pipe to realize the hot melt connection with the socket as a whole through the heating of metal parts. Among them, the two sides of the outer wall of PSP steel plastic composite pipe and the outer wall of the socket are connected by hot melt, and the two sides of the inner wall of PSP steel plastic composite pipe and the inner wall of the socket are connected by hot melt, The effect of four side hot melt connection is achieved, which overcomes the problem that the two do not melt together due to insufficient heating temperature, and overcomes the phenomenon that polyethylene or polypropylene carbonizes and flows with voids due to excessive heating. The connection strength is significantly improved, and the defects of the prior art such as cracks, water leakage, looseness, false fusion and image are overcome