Gambaran Keseluruhan Paip Struktur Petroleum Paip paip petroleum ASME SA106, ASME SA179, ASME SA192, ASME SA210, ASME SA213, ASME SA335, dll Gred paip paip petroleum API 5L PSL1, PSL2 API 5L API 5L Gr.B x42 x52 x60 x65 x70 dll API 5CT-2018 selongsong dan tiub API 5ct API 5CT J55, K55, N80, N80Q, dll