thisproduction linemainlyusesin production the heavy calibertubing,the productiontubing widely uses in the water pipe,the gasmain,the chemical industry withaspects and so ontube, agriculturalirrigation and livesof the peopleheavy-caliber supplies, the dischargepipe and so on the special use tubing.this production line mainly inproducing the PVCtubing,the production tubing widely is suitable in thestructural purpose the waterpipe ,the down-fowe pipe and draining wateruses the pipeline