热塑性塑料管材 简支梁冲击强度的测定 第2部分:不同材料管材的试验条件
Thermoplastics pipes-Determination of pendulum impact strengthby the Charpy method-Part 2: Test condition for pipes of various materials
Thermoplastics pipes-Determination of pendulum impact strengthby the Charpy method-Part 2: Test condition for pipes of various materials
Thermoplastics pipes-Determination of pendulum impactstrength by the Charpy method-Part 1: General test method