API 5CT N80 88x50mm VIT Pre-stressed Vacuum Insulated Tubing for heavy oil production

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US $2,200-2,500 / Tons | 25 Ton/Tons (Min. Order)
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Overview
Quick Details
Standard:
API
Standard2:
API 5CT
Grade Group:
API J55-API P110
Grade:
API J55, API K55, API N80, API L80, API P110
Thickness:
4.24 - 12.7 mm
Section Shape:
Round
Outer Diameter(Round):
89 - 177 mm
Place of Origin:
Shandong, China (Mainland)
Secondary Or Not:
Non-secondary
Application:
Oil Pipe
Technique:
Hot Rolled
Certification:
API
Surface Treatment:
Galvanized
Special Pipe:
API Pipe
Alloy Or Not:
Is Alloy
Product name:
Vacuum Insulated Tubing /VIT
Keyword:
Mill Test Certificate Steel Pipe
Type:
Hot Rolled Hollow Carbon Pipe
Surface:
Customers't Requirement
Material:
N80 L80 P110
End protector:
Plastic Pipe Cap
Name:
Galvanized ERW Round Hollow Section Steel Pipe
Usage:
Construction Structure
Shape:
Round Shape
Length:
9-10 meters
Supply Ability
Supply Ability:
10000 Ton/Tons per Month
Packaging & Delivery
Packaging Details
packed in bundles
Port
Qingdao;Tianjin
Lead Time :
Quantity(Tons) 1 - 10 >10
Est. Time(day) 45 To be negotiated

API 5CT Vacuum Insulated Tubing(VIT) casing(VIC) for Oil Thermal Recovery

Product Description

Vacuum insulated tubing & casing uses water-based fiber cloth material with a three grade vacuum pump equipment,automatic welding machine and MT. These guarantees a high degree of vacuum level that meets the insulation grades D and E.

These vacuum insulated tubing & casing use an effective getter to ensure the tubing insulation grade do not decrease after a long time of outdoor storage.  vacuum insulated tubing & casing are reusable. They retain desired insulation properties after being used several times. we are dedicated to the development of new products. Our products constitute almost 40% market share in Shengli Oilfield VIT market at the moment.

The pre-stressed insulated tubing is mainly consist of inner tube, outer tube, heat insulation material, coupling, etc. In its structure, put pre-stress on the inner tube to make up the different thermal elongation of the inner and outer tube. At normal temperature, the inner tube is in tension condition. When the temperature increases gradually, the tensile stress decreases. When the temperature increases constantly, the tension condition of the inner tube turns to its bearing condition. The pre-elongation of the inner tube decreases the  compression stress after the heated elongation. As a result, the insulated tubing run and maintain in good condition.   

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Key Feature

1.Insulated grade D and E.Advanced3-levelvacuum pump, automatic welding machine and online radiographic.

2.Long lifetime.Duringoutdoor storage, insulation level don't reduce.

3.Inner tube and outer tube connections are both available. 

Specifications

A. VIT Performance Level

Heat-insulating property levelHeat conductivity coefficient
A0.06≤λ<0.08
B0.04≤λ<0.06
C0.02≤λ<0.04
D0.006≤λ<0.02
E0.002≤λ<0.006

B. VIT Specification

Specification

Basic parameter

Outer tube OD x Inner Tube ID(in x in)

Steel grade

Connection

Thread

3 1/2 x 2 3/8

 

N80

L80

P110

 

 

Inner connection

Outer connection

Extreme line connection

 

3 1/2 USS

4 1/2 x 2 7/8

4 1/2 BC

4 1/2 x 3 1/2

4 1/2 BC

5 x 3 1/2

5BC

5 1/2 x 4 1/2

5 1/2 BC

7 x 5 1/2

7 BC

C. Main Performance Parameters

 Heat conductivity coefficient (Inner tube inside wall 350℃)  ,W/(m·℃)Normal temperature tensile load, kNNormal temperature tensile load, kNNormal temperature tensile load, kNFlatness %
Normal Temp.Gas injectionNormal Temp.Gas injection
YG88X400.002~0.02≥40232203028≤0.2
YG88X500.002~0.02≥43232203028≤0.2
YG114X620.002~0.02≥50632202624≤0.2
YG114X760.002~0.02≥53732202624≤0.2
YG127X620.002~0.02≥61532202321≤0.2
YG127X760.002~0.02≥61532202321≤0.2

 

Production Process

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Inspection
A.  X-ray flaw detection_

X-ray flaw detection equipment carry out the testing on the welding seam to guarantee the welding effect and insulating capability.

 

B.  Heat conductivity coefficient test

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Heat conductivity coefficient 100% test, record the performance parameter and the index curve for each piece of insulated tube.

 

Quality Control

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Facilities

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