Sight Glass, Pipe Fitting, Straight Sight Glass manufacturer / supplier in China, offering Stainless Steel Sanitary Threaded Straight Sight Glass for Tank, Casting Stainless Steel Pipe Fitting 1" Equal Tee 3000lb Socket Welded Tee Ss 316 Equal Tee, Ss 304 316L 347H 904L Butt Welded Pipe Fitting Equal Tee and so on.