3A Sanitary Fitting Sanfit Metal Industry Co., Ltd also offers the good quality of butt-weld fittings. 3A sanitary Fitting Tri-weld fittings give processors the highest degree of corrosion resistance and sanitation available. Their streamlined design, flush joints and butt-weld assembly provides full, unrestricted flow for truly hygienic, permanent welded systems. For any further information, please go to website: http: / / www.sanfit.com.tw