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Product Name: Threaded flanges
Material: Stainless steel,Carbon steel,Alloy steel,Nickel alloy,
Copper alloy, copper, brass and bronze
Standard: ASTM, ASME, JIS, DIN, GB, BS 
Size:

1/2"NB TO 60"NB IN

Class: Class150,Class300,Class400,
Class600,Class900,Class1500,Class2500