Stainless Steel threaded/screwed pipe fittings BSP/NPT/DIN2999/DIN259 coupler Material:SS ... Water, oil, gas Stainless Steel threaded/screwed pipe fittings BSP/NPT/DIN2999/DIN259 couplerFor general chemical and industrial ... 1/4", 3/8", 1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4" Work pressure ... drawing or sample) Stainless Steel threaded/screwed pipe fittings BSP/NPT/DIN2999/DIN259 coupler