Plastics piping systems . glass-reinforced thermosetting plastics pipes . test method to prove the resistance to initial ring deflection 塑料管道系統(tǒng).玻璃纖維增強(qiáng)式熱固塑料管件.檢驗(yàn)初始環(huán)撓曲的試驗(yàn)方法
Plastics piping systems-glass-reinforced thermosetting plastics pipes-test method to prove the resistance to initial ring deflection 塑料管道系統(tǒng).玻璃增強(qiáng)的熱固性塑料管.驗(yàn)證抗初期環(huán)狀物撓曲的試驗(yàn)方法