증명서
API, CE, SNI, BIS, Sirm, JIS, GS, ISO9001
표준
API.SPEC.JIS C8305-1999,ANSI A182-2001 , DIN2440, JISG3452-54,
파이프 두께
SCH5S, SCH10S, SCH20S, SCH20, SCH30, STD, SCH40, SCH60, XS, SCH80,
재료 등급
API 5L, Gr. A & B, ASTM A53, Gr. A & B, ASTM A106 Gr. A & B
학년
10 #-45 #20 #,16mn,10Cr9Mo1VNb,A135-A,Q195-Q345,15crmo,St37-21,ST35-ST52,