Xi'an Tiptop Machinery Co.,Ltd
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Tiptop supplys varieties of coiled tubings that meet the highest industry specifications. Our products conform to API 5ST Standard and other related standards.
Our conventional coiled tubing raw material has low content of sulfur and phosphorus, suitable mechanical properties, uniform microstructure, the flexion ratio of steel coil is lower than 0.80, and the strength performance difference of different parts is within 50MPa. All mechanical properties comply with API Spec 5STStandard and have excellent fatigue resistance.
The steel grade and size information covered are as follows:
Type: Conventional coiled tubing(CT)
Advantages: high-strength, excellent fatigue resistance.
Reference material: CT70, CT80, CT90, CT100, CT110
Standard: API Spec 5ST
OD: 3/4 " to 3 1/2" (19.1 mm to 88.9 mm)
Thickness: 0.075 " to 0.3" (1.9mm~7.6mm)
The dimensions can be customized according to API Spec 5ST or user requirements.
Users can choose the required material and steel grade according to the operating conditions.
Chemical composition requirements for carbon steel low alloy steel coiled tubing
|
chemical composition (%) |
||||||
|
Material |
Standard |
C |
Mn |
P |
S |
Si |
|
CT70 |
API 5ST Standard |
0.16 |
1.20 |
0.025 |
0.005 |
0.50 |
|
CT80 |
0.16 |
1.20 |
0.020 |
0.005 |
0.50 |
|
|
CT90 |
0.16 |
1.20 |
0.020 |
0.005 |
0.50 |
|
|
CT100 |
0.16 |
1.65 |
0.025 |
0.005 |
0.50 |
|
|
CT110 |
0.16 |
1.65 |
0.025 |
0.005 |
0.50 |
|
Mechanical properties of carbon steel and low alloy steel coiled tubing
|
Grade |
Min. Yield strength |
Max. Yield strength |
Min. Tensile strength |
Max. hardness HRC |
|||
|
psi |
Mpa |
psi |
MPA |
psi |
Mpa |
tube body &weld seam |
|
|
CT70 |
70,000 |
(483) |
80,000 |
552 |
80,000 |
552 |
22 |
|
CT80 |
80,000 |
(552) |
90,000 |
620 |
88,000 |
607 |
22 |
|
CT90 |
90,000 |
(620) |
100,000 |
689 |
97,000 |
669 |
22 |
|
CT100 |
100,000 |
(689) |
- |
- |
108,000 |
758 |
28 |
|
CT110 |
110,000 |
(758) |
- |
- |
115,000 |
793 |
30 |