Line pipes are used to transport oil and gas, water, mineral slurry and other fluids. Our line pipes are manufactured in accordance with API Spec 5L.

Threaded Casing with Short/Long Round Thread or Buttress

Drill Pipes with Welded-on Tool-Joints/Threaded End

Line Pipe with Plain End and Beveled

Boiler Tubes /Heat Exchanger Tubes

Carbon Steel Tubes for General Structural Purposes

Precision Carbon Steel Tubes

Seamless Tubing and Couplings Hydrosulfide-Carbon Dioxide- and Cold-Resistant

High Longevity Oil-Well Tubing and Interlocks of Production Strings for Corrosive Media

Wear-Resistant Tool Joints for Tubing

Seampless Tubing with Externally Upset Ends and Couplings Hydrosulfid- and Cold-Resistant

Drill Pipes with Welded Tool Joints

Application:

Conveying gas,water,and oil in both the oil and natural industries, Tubular goods for petroleum and natural gas industries

Production Standard, Grade, Steel No:

API 5L PSL1 L175/A25, L210/A, L245/B, L290/X42, L320/X46, L360/X52, L485/X70, PSL2 L245R/BR, L290N/X42N, L320N/X46N, L360N/X52N, L415/X60N

API 5CT PSL1, PSL2, PSL3, H40, J55, K55, N80

GB/T 9711.1 L175, L210, L245, L290, L320, L360

GB/T 9711.2 L245NB, L290NB, L360NB

GB/T 9711.3 L245NC, L290NC, L360NC

Delivery Condition:

Annealed, Normalized, Normalized and Tempered

Inspection and Test:

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness), Drift Test, Surface and Dimension Test,NDE, Hydrostatic Test, MT

Inspection and Tests Performed: View more...

 

5L

- Chemical composition, Mechanical properties, Hydrostatic test, Dimensional testing, Visual inspection, Nondestructive inspection

 

 

5CT

- Chemical composition, Tensile test, Flattening test, Hardness test, Impact test, Grain size determination, Harden ability, Sulfide stress-cracking test, Hydrostatic test, Dimensional testing, Visual inspection, Non-destructive examination(NDE)

 

Surface Treatment:

5L - Uncoated(bare), Temporary coating, Special coating, Oil-dip, Shot Blasting, Varnish

Size: We supply various line pipes including seamless line pipes

(OD from 2-3/8" to 24", steel grade A, B, X42 - X80)