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联想z380报价
ASTMD380_1994
types, constructions, or sizes of hose. 5. Sampling 5.1 A sample of sufficient length for proper performance of the required tests shall be cut from the hose when possible without impairing its use and the pieces of hose from which samples have thus been cut shall be accepted by the purchaser as full length, provided the hose meets the speci?ed require- ments. The length of samples required depen