Stainless Steel Pipe Fitting 1) Grade:321,304,304L,316,316L,317, ... ASME/DIN/JIS and so on. Stainless Steel Pipe Fitting Features:1) pipe diameter : 6mm-630mm pipe thickness : 0.8mm-25mm2) Grade : Grade ... for use in the petroleum, chemical, medical equipment, boiler heat-exchanger and other fields. 5.packing:standard export packing.6 ... ,SGS,and third part inspection. 321 Stainless Steel Pipe Fitting