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Item:  Butt Welded Elbow
Specification:  NPS1/2''-NPS48''
Material: ASTM A234, 304,304L,316,316L,321, A403, A420, A106, A312, A335, A515 ect.
Standard:  ANSI B16.9,MSS SP 43, DIN 2605 ect.