Line Pipe and Structural
Line Pipes are used in the transportation of oil, natural gas and petroleum by-products for both on-shore & off-shore applications. United Seamless manufactures seamless line pipes from 4-1/2” to 14” NB conforming to API 5L.
Products: LINE PIPES
| Specifications | Steel Grades | Remarks |
| API 5L / ISO 3183 | Gr. B; X42; X52; X56; X60; X65; X70; X80 |
PSL1 / PSL2; NACE MR0103 / MR0175 |
| EN 10208/2 | L245NB; L290NB; L360NB | |
| ASTM A-53 / ASME SA-53 | Gr. A; B | |
| ASTM A-106 / ASME SA-106 | Gr. A; B; C | |
| ASTM A-333 / ASME SA-333 ASTM A-334 / ASME SA-334 |
Gr. 1; 3; 6 | |
| API 5L / ASTM A-106 / ASME SA-106 / ASTM A-53 / ASME SA-53 |
Gr. B / C / X42 | QUAD Spec. for USA |
| ASTM A-333 / ASME SA-333 / API 5L | Gr. 6 / X52 | DUAL Spec. for all |
Products: STRUCTURAL PIPES
| Specifications | Steel Grades | Remarks |
| IS 1239 | Part 1 | |
| IS 1161 | YST 210; 240; 310 | |
| ASTM A-53 | Gr. A; B | |
| API 5L | Gr. X52 | |
| EN 10210/1 | S275J2H; S355J2H | |
| EN 10297/1 | E235; E275; E355 | |
| API 5L (ONGC Spec.) | Gr. X52 (Mod.) / Class A / B / C |
Off-Shore Structural |
| EN 10225 | G1+N; G14+N; G15+N | Off-Shore Structural |