Butt Weld & Butt Tube OD FittingsASME-BPE Compliant Butt Tube Fittings for the BPE MarketWe are”proud”to promote ourselves as a USA Manufacturer utilizing domestic sources as our first line of supply.Butt Weld & Butt Tube OD Fitting Categories All fittings are manufactured to BPE specs unless otherwise specified. See Biopharm section for more butt tube weld fitting options specification sheet ELBOWSView ELBOWS TEES & CROSSESVIEW TEES & CROSSES REDUCERSView REDUCERSS