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Tubing, Casing and Line Pipes

Tubing and casing strings are the main parts of the well construction. All wells drilled for the purpose of oil or gas production (or injecting materials into underground formations) must be cased with material with sufficient strength and functionality.

Packing oil pipe
API5L Steel pipe for pipeline transportation system
API5L Steel pipe for pipeline transportation system
Peotroleum and natureal gas industies - Steel pipe for pipeline transportation system.
API Spec 5CT Casing pipe
API Spec 5CT Casing pipe
API Spec 5CT – Specification 5CT/ISO 11960, Specification for Casing and Tubing, Eighth Edition, Petroleum and natural gas industries-Steel pipes for use as casing or tubing for wells.
API5L Steel pipe for pipeline transportation system
API5L Steel pipe for pipeline transportation systemAPI5CT Peotroleum and natureal gas industies - Steel pipes for use as casing or tubing for wells.
API 5L Seamless Line Pipe
API5L Steel pipe for pipeline transportation system
The American Petroleum Institute specification API 5L covers seamless line pipe.
Line Pipe with Plain End and Beveled
Line Pipe with Plain End and Beveled
The pipelines, transporting oil, gas, mainly divided into the main transmission pipeline, regional transportation pipeline and the urban pipeline.
Carbon Steel Tubes for General Structural Purposes
Carbon Steel Tubes for General Structural Purposes
DIN 2448 Seamless Steel Pipes and Tubes-Dimensions, Conventional Masses per Unit Lengthstandard reference.
Oil Country Tubular Goods (OCTG)
Oil country tubular goods (OCTG) is a family of seamless rolled products consisting of drill pipe, casing and tubing subjected to loading conditions according to their specific application.
Wear-Resistant Tool Joints for Tubing
Wear-Resistant Tool Joints for Tubing
This specification covers the wear-resistant tool joints (interlocks) for tubing per GOST 633-80 that are used in production and process strings.
Drill Pipe

Drill Pipes with Welded Tool Joints
The drill pipes with welded tool joints are installed in the drilling string and are connected with the kelly bar in the top and with the drill collar and drill bit or tool in the bottom.

API5L Steel pipe for pipeline transportation system
API5L Steel pipe for pipeline transportation system Peotroleum and natureal gas industies - Steel pipe for pipeline transportation system.
API X70 steel pipe
API5L Steel pipe for pipeline transportation system Sunny Steel is specialized in supplying API 5L steel pipe in X70.
Offshore Pipeline

Offshore pipeline is broadly used to transfer considerable amounts of oil pipeline around the seabed through the closed tubes, which are key parts of the offshore oil (gas) area development and production system.

Inspection and Tests Performed:

API SPEC 5L – Chemical composition, Mechanical properties, Hydrostatic test, Dimensional testing, Visual inspection, Nondestructive inspection

API SPEC 5CT – Specification 5CT/ISO 11960, Specification for Casing and Tubing, Eighth Edition, Petroleum and natural gas industries-Steel pipes for use as casing or tubing for wells.

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)


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