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Oil Country Tubular Goods

Oil Country Tubular Goods, aka OCTG, is a pipe used in drilling to maintain the stability of the drill hole and transport oil and gas from the bottom of the well to the surface. They play a vital role in the drilling process. They are placed in an already drilled wellbore and are used to support the walls of the well to prevent them from collapsing.
Product name: Oil country tubular goods,Seamless casing pipes,casing pipe,API 5L line, API tubing, oil pipes, gas pipeline, oil pipeline,casing tubing,casing tubes
Materials: L245, L360, GR.B, X42, X52, X60, X70, J55, K55, N80, L80, P110 etc.
Standards: API Spec 5L, API Spec 5CT.
Product Details

Oil country tubular goods type:

Steel line pipe, steel casing, seamless steel pipeline, welded steel pipeline, seamlesss casing pipe, welded casing pipe, oil pipeline, gas pipeline

1. Line pipe

1) Type: seamless pipe and welded pipe. 

2) Connection: welded ends, coupling connection, socket links.

3) Materials: L245, L360, GR.B, X42, X52, X60, X70 etc.

4) Size: 21.3 - 2032 mm.

5) Application: for oil and gas industry of oxygen, water and oil pipelines.

2. Tubing and casing

1) Materials: J55, K55, N80, L80, P110 etc. 

2) Specification: 1 1/2" - 20" .

3) Category: not upset tubing (NU), external upset tubing (EU), the overall joint tubing (IJ).

4) Application: in the wells used for producing liquid or liquid injection tube.

Oil Country Tubular Goods feature

Oil casing is used to support the oil, gas wells of steel pipe, in order to ensure the drilling process and the completion of the entire well after the normal operation. Casing according to the use can be divided into: catheter, surface casing, casing technology and oil casing.

Oil country tubular goods quality inspection:

1. Our factory has its own "experimental testing center".CNAS Laboratory Accreditation Certificate

2.Control quality strictly.The first pass is the quality inspection on the production line,The second pass is full inspection of the  production quality .

3.We have got internationally recognized certificates, ISO, CE, LR,Philippine certificate,also support third-party testing,as SGS, BV, ect.

Oil Country Tubular Goods advantages

Shenlong oil country tubular goods are executed according to API process, 100% non-destructive testing is performed, and the pipelines are of good quality; we have more than 20 years of production experience and projects all over the world.

Oil Country Tubular Goods Technical Data 

Size tolerance

1. Line pipe size tolerance

Pipe type OD(D) WT(S)
Pipe body OD(mm) Tolerance(mm) OD
≥60.3 & S<20 ±0.75% ≤73.0 +15%,-12.5%
≥60.3 & S≥20 ±1.00% >73.0 & S<20 +15%,-12.5%
>73.0 & S≥20 +17.5%,-10

2. Tubing and casing size tolerance

Pipe type OD(D) WT(S)
Cold drown tube OD(mm) Tolerance(mm)
<114.3 ±0.79 -12.50%
≥114.3 -0.5%,+1%

3. Line pipe specification

DN OD WT Plain-end pipe weight per meter
inch mm mm mm Lb / ft kg/m
0.405 0.405 10.29 0.095 2.4 0.31 0.47
0.54 0.54 13.72 0.088 2.2 0.43 0.62
0.54 13.72 0.119 3 0.54 0.79
0.675 0.675 17.15 0.091 2.3 0.57 0.84
0.675 17.15 0.126 3.2 0.74 1.1
0.84 0.84 21.34 0.109 2.8 0.85 1.28
0.84 21.34 0.147 3.7 1.09 1.61
1.05 1.05 26.67 0.113 2.9 1.13 1.7
1.05 26.67 0.154 3.9 1.48 2.19
1.315 1.315 33.4 0.133 3.4 1.68 2.52
1.315 33.4 0.179 4.6 2.17 3.21
1.66 1.66 42.2 0.145 3.7 2.72 3.43
1.66 42.2 0.191 4.9 3 4.51
1.9 1.66 42.2 0.382 9.7 5.22 7.77
1.9 48.3 0.145 3.7 2.72 4.07
1.9 48.3 0.2 5.1 3.63 5.43
1.9 48.3 0.4 10.2 6.41 9.58
2.3/8 2.375 60.3 0.109 2.8 2.64 3.97
2.375 60.3 0.125 3.2 3 4.51
2.375 60.3 0.141 3.6 6.36 5.03

Oil Country Tubular Goods

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