1 production process: seamless & erw 2 specification: api 5ct /5b 3 out diameter: 4 1/2"- 20" (114.3mm-508mm) 4 thread: ltc, stc, btc and others 5 length:r1, r2, r3 6 steel grade: h-40, j55, k-55, n-80, l-80, p110, q-125 7 heat treatment: normalized, quencher+temper 8 loading port: mainly tianjin port, In bundles with steel strips , then wrapped in nylons or in bulk as per the loading requirements
