When the mold structure allows, the inlet and outlet pipes should be welded with the mold as much as possible, and the pipes at the inlet and outlet of the mold should be connected and fixed with the mold by welding; It should be pointed out that:
1. Stainless steel pipes are needed to weld the lengthened water inlet and outlet pipes, because this material has low thermal conductivity and is not easy to burn the middle hose connected with it;
2. The middle transition tube is made of rubber tube, usually oxygen tube, with good quality;
3. The length of the welded pipe should be long enough, so as to prevent the excessive heat of the mold from being transferred to the rubber pipe through the pipe and being burnt out, and avoid the damage of the heat radiation of the mold to the rubber pipe;