DIN EN 1862:1997 玻璃纖維增強(qiáng)熱固性塑料 (GRP) 制成的管道 DIN 在化學(xué)環(huán)境中儲(chǔ)存后彎曲時(shí)的相對蠕變系數(shù)的測定
Pipes made of glass fiber reinforced thermoset plastics (GRP) DIN Determination of the relative creep factor when bent after storage in a chemical environment