1.SIZE :From 1/2 to 48 (Seamless pipe fittings).
From 26 to 72 (Seam pipe fittings)
2.STANDARD: AMSE,JIS ,DIN,GB
3.MATERIAL: ASTM A234 WPB, A420 WPL3/L6 etc
4.WALL THICKNESS : SCH10 to SCHXXS
reducer