Eccentric Reducer-------------------StandardGB/T12459, GB/T13401,SH3408, SH3409,HG/T21635 ,HG/T21631 ,ASME B16.9, MSS SP-43 , DIN 2616,JIS B2313 SizeSeamless Fittings 1/2-20(DN15-DN500),Welded Fittings 1/2-48(DN15-DN1200)Wall ThicknessSCH5S-SCH160Mat