GBT17101-2008 桥梁缆索用热镀锌钢丝.pptx
流体输送用热塑性塑料管材耐内压试验方法Thermoplasticspipesfortheconveyanceoffluids—Resistancetointernalpressure—Testmethod(ISO116...
流体输送用热塑性塑料管材公称外径和公称压力Thermoplasticspipesfortheconveyanceoffluids—Nominaloutsidediametersandnominalpressures(...
