Electric Resistance Welding (ERW)

PTC Liberty Tubulars is a market leader in the production of ERW pipe for downhole casing and tubing applications.  ERW pipe is produced by forming hot-rolled steel coils into a cylinder and then welding the strip edges together.  We produce or process ERW up to 9.625” outside diameter (OD) in J, L, and P grades with all API threads and several high performance Semi-Premium connections in our two Texas plants. 

  • 4.5” to 9.625” OD 
  • Wall thickness 0.125″ to 0.625″
  • Industry leading non-destructive testing technology
  • In-house UT inspection
  • Uniform wall thickness
  • Outstanding collapse requirements
ERW Casing Variations
OD (inches) Wall Thickness (inches) Pounds per Foot
4.500” .250 11.60
.290 13.50
.337 15.10
5.500” .304 17.00
.361 20.00
.415 23.00
7.000” .317 23.00
.362 26.00
.408 29.00
.453 32.00
7.625” .328 26.40
.375 29.70
.430 33.70
8.625” .264 24.00
.352 32.00
9.625” .352 36.00
.395 40.00
.435 43.50
.472 47.00

The following grades and connections are available for all of our OD and weight options.

End Finish
J55

PE
LC
BC
SEMI-PREM

L80

PE
LC
BC
SEMI-PREM

N80

PE
LC
BC
SEMI-PREM

SB80

PE
LC
BC
SEMI-PREM

SB85

PE
LC
BC
SEMI-PREM

P110

PE
LC
BC
SEMI-PREM

HCL80

PE
LC
BC
SEMI-PREM

HCP110

PE
LC
BC
SEMI-PREM

CYP110

PE
LC
BC
SEMI-PREM

ICYP110

PE
LC
BC
SEMI-PREM

Seamless (SMLS)

PTC Liberty Tubulars is a market leader in the processing and finishing of Seamless (SMLS) pipe.

Processing and Finishing

In addition to being a turnkey supplier of OCTG, PTC Liberty Tubulars is a market leader in the processing and finishing of casing.