This Standard specifies the method of using the hand-feeling softness tester to determine the softness of paper. This Standard is applicable to various wrinkle toilet paper, tissue paper and its derivatives, as well as other papers that require softness.

This Standard specifies the category, code, order content, dimension, shape, mass, technical requirements, test methods, inspection rules, packaging, marking and quality certificates of seamless steel tubes for low-temperature-service piping.

This Standard specifies the type and dimension, technical conditions and markings of unchamfered hexagon thin nuts.

This Standard specifies the type size, technical conditions and marks of prevailing torque type hexagon nuts (with non-metallic insert), style 2. This Standard is applicable to prevailing torque type hexagon nuts (with non-metallic insert), style 2 of which the thread specifications are M5 ~ M36, performance grades are 10 and 12, the product grades are grade A and grade B. Grade A is used for nuts of 16 mm; Grade B is used for nuts of D>16 mm.

This Standard specifies the type and dimension, technical conditions and marks of slotted countersunk flat head screws.

This Standard specifies test methods for verifying the capabilities of tyres for truck and bus, including terms and definitions, test equipment and precision, test conditions, test procedure, judgment criterion and test report, etc. In the test methods given, only some may be required depending on the type of tyre to be tested.

This Standard specifies the testing principle, sample preparation, reagent preparation, testing procedure and judgment principle for test method for uniformity of zinc coating on zinc-coated steel wire by the copper sulfate dip.