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20”x16” Sch. 40 reducing tee product specifications size From1/2” to 72” thickness SCH20,SCH30,SCH40,STD,SCH80,SCH100,SCH120,SCH160,XXS standard ASME B16.9 MSS SP-75 DIN2615 JISB2311 JISB2312 JISB2313 ...