1. Pipe saddle, saddle tee, sweepolet, pipe sweepolet

2. 1/2" 48" 3. Sch40, sch80, sch120, sch160, std, xs, xxs

4. ANSI, ASME, ASTM, JIS, DIN, BS, G

5. Construction, hardware, metallurgy, petroleum, gas and water, pipeline, electrical power

6. Convinence: instead of tee, use easily, cost low, welding convenience