... ,304L,316L, etc.3Standard:ASME, B16.11,B16Threaded Pipe Fittings1. Size: 1/2"-6" (DN15-DN150) ,SCH5S-SCH160 2. standard: according ... -WP317L,A403-WP321,A403-WP321H4.Usage:use for petroleum,chemical,nuclear,power,shipbuilding,papermaking,food,water,gas,medicine,construction industry etc.5 ...