... ,XXS4.Standard: ISO, SNSI, JIS, DIN, GB/T12459,GB/T13401,ASME B16.9.SH3408 SH3409, HG/T21635,HG/T21631,SY/T050105.Material ... ,reducers,caps,bends,flanges,lap joint stub ends) according to ASME, JIS, DIN standard.. In order to enlarge our existingmarket, we ...