[Production process] lined pipe trench of cold drawn, and internal expansion type, roller-expanding and sintering mode processing, technology products with different properties slightly different, but both meet the performance standard water pipeline project . [Features of lined pipe trench] 1. wide scope, the full range specifications. 2. Quick and reliable connection. 3. good corrosion resistance. The pipeline without fouling, transmission efficiency. 5. High mechanical strength. 6. good economic returns. Quality inspection lined pipe trench 1. The installation process quality control and quality inspection conducted prior to use, this is our last hurdle, after installation, galvanized plastic-lined pipe trench for pipe trench to be pressure test, process, can not carry out any operation, so as to avoid loss of life; 2. To the production chain, plastic-lined pipe trench production enterprises should establish a sound and complete feed detection mechanism, Bijie lined pipe trench, Any defective quality of the semi-finished products into finished products will not be allowed prelude lined trench tube manufacturers, the strict control of the ring at the door, this is the first step to be taken seriously, and the relevant departments should also be real time It conducted sampling; 3 is in plastic-lined pipe trench after the production is completed, the same testing procedures have to be completed to establish the product, which are equally important with the first point, that is, before the factory sales before a test processes and mechanisms must be in place. Bijie lined pipe trench Chuanhai machinery _ _ blue lined pipe trench is provided by Chuanhai Machinery Co., Ltd. Weifang. Bijie lined pipe trench Chuanhai machinery _ _ blue lined pipe trench is Chuanhai Weifang Machinery Co., Ltd. (www.wfchuanhai.com) (www.sdchuanhai.com) (www.chuanhaijixie.com) this year introduced a new upgrade The above picture is for reference only, please call Tel picture on this page or to obtain the latest information, contact: Sun Zhuanhai.