STPG410-JIS, SPPS420-KS Pipes for Pressure
STPG410, SPPS420 Pipes for Pressure
STEELMAX Steel Story
STPG 410, SPPS 420 압력 배관용 강관은
JIS G 3454,
13
08, 2014
28
04, 2014
SPPS420-KS, STPG410-JIS Carbon Pipe for Pressure
STPG410-KS , SPPS420-JIS Carbon Pipe for Pressure
STEELMAX Steel Story
SPPS420 , STPG410 Symbol steel Grade 는
압력
26
10, 2012
SPPS, STPG, Carbon Steel Pipes for Pressure Service
SPPS, STPG, Carbon Steel Pipes for Pressure Service
STEELMAX Steel Story
압력배관용 강관은 말 그대로 강관이, 강관