Steel pipe 4 inch. 237″ wall = 4. About :An MPT Seamless Pipe Nipple made of stainless stee...

Steel pipe 4 inch. 237″ wall = 4.  About :An MPT Seamless Pipe Nipple made of stainless stee...Steel pipe 4 inch. 237″ wall = 4.  About :An MPT Seamless Pipe Nipple made of stainless stee...