PIPA STK 400 SNI-07-0068-1987 PKB 30 PKB 41
Standard ASTM A 53 ( A) BS 1387: 1985 Heavy Series ( H) BS EN 10255: 2004 ( E) JIS G 3444 STK 290, JIS G 3444, STK 400 JIS G 3452 SGP Black And Galvanized Pipe JIS G 3454 STPG 370 SNI-07-0068-1987 PKB 30 SNI-07-0068-1987 PKB 41 Tolerance Thickness : ± 12.5 % Length : ± 2 % Outside Diam