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Sizes and Materials
Tubing pipes are manufactured in seamless and welded execution, in the size range of 1.050 to 5 1/2 inches (consult this article to see the AP5CT tubing pipes sizes) and in the following material grades: H-40, J-55, K-55, N-80, L-80, C-90, T-95, P-110, Q-125
End Connections
The main types of connections for tubing pipes are NUE (non-upset), EUE (external upset) and premium. Corrosion resistance under sour service conditions is a very important OCTG characteristic, especially for casing and tubing.
More casing pipes and their colors
Note: P—plain-end；N—non-upset, with threaded and coupled；U—external-upset, with threaded and coupled；I—whole joint
STEEL INGOT HEATING → HYDRAULIC PUNCHING → REHEATING → EXTENSION → PERIODIC ROLLING → REHEATING → SIZING → COOLING → STRAIGHTENING → PIPE CUTTING → INSPECTION
1. AN ANNULAR HEATING FURNACE IS REQUIRED FOR INGOT HEATING;
2. PUNCHING AND REHEATING WITH THE HYDRAULIC PRESS;
3. THE OIL CASING PLANT USES A TWO-ROLLER GUIDE PLATE EXTENSION MACHINE FOR EXTENSION;
4. RE-USE A DISC HEATING FURNACE FOR PERIODIC ROLLING, AND USE A NON-ENTRY FURNACE FOR REHEATING, COOLING, STRAIGHTENING, PIPE CUTTING, AND INSPECTION.
Q: Are You Manufacture or Trade Company?
A: We are the professional manufacturer of steel products located in Shandong province, China. Welcome to contact us and visit our factory before you place orders.
Q: How do you guarantee the quality?
A: We can send free samples to you, we can accept third-party testing.
We also have test certificate, every batch goods will be testing before shipment, and the testing report will delivery to you with your goods.
Q: Can I get free samples?
A: Of course you can. We can produce according to your samples or technical drawings. Contact us by whatsapp or email to get free samples and you will get the sample after 3-7 working days.
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