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


  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