Corrosion resistant alloy (CRA) seamless pipe L80 (9Cr) for API tubing and casing
PRODUCT
Corrosion resistant alloy (CRA) seamless pipe L80 (9Cr) for API tubing and casing
OVERVIEW
It can be applied to oil and gas well production that contain carbon dioxide and chlorine ion acidic medium, meanwhile, since its high strength and exnt corrosion resistance and low temperature toughness, it is adapt to the high temperature and bad environment of carbon dioxide and small amount of hydrogen sulfide coexist.
CHEMICAL COMPOSITION
| Class | Material | C | Si | Mn | P | S | Cr | Ni | Mo | Cu |
| L80 | 9Cr | ≤0.15 | ≤1.00 | 0.30-0.60 | ≤0.020 | ≤0.010 | 8.00-10.00 | ≤0.50 | 0.90-1.10 | ≤0.25 |
MECHANICAL PROPERTIES
| Class | Material | Total elongation under load | Yield strength | Tensile strength | Elongation | Hardness |
| L80 | 9Cr | 0.50% | 80-95ksi552-655MPa | ≥95ksi≥655MPa | as per API 5CT | ≤23 HRC ≤241 HBW |
TUBING SIZES
OD: 3-1/2 inch (88.9mm), 4 inch (101.6mm), 4-1/2 inch (114.3mm)
WT: 5.49mm - 16.00mm
Length: R1 (6.10 - 7.32m), R2 (8.53 - 9.75m), R3 (11.58 - 12.80m)
CASING SIZES
OD: 4-1/2 inch (114.3mm), 5 inch (127.0mm), 5-1/2 inch (139.7mm), 6-5/8 inch (168.28mm), 7 inch (177.8mm), 7-5/8 inch (193.68mm), 7-3/4 inch (196.85mm), 8-5/8 inch (219.08mm)
WT: 5.21mm - 22.22mm
Length: R1 (4.88 - 7.62m), R2 (7.62 - 10.36m), R3 (10.36 - 14.63m)
DIMENSION TOLERANCE
The following tolerances apply to the outside diameter, D, of pipe
| Label 1 | Tolerance on outside diameter, D |
| < 4-1/2 | ± 0.79 mm (± 0.031 in) |
| ≥ 4-1/2 | -0.5 %D / +1.0 %D |
Wall thickness: tolerance for pipe –12.5 %
Inside diameter: inside diameter, d, is governed by the outside diameter and mass tolerances.
HOT EXTRUSION PROCESS
Bar → Inspection → Peeling → Cutting → Boring → Chamfering → Inspection → Cleaning → Preheating → Induction heating → Broaching → Induction heating → Hot extruding → Heat treatment → Straightening → Saw cutting → Pickling → Inspection & repairing → CR(CD) → Deoil → Heat treatment → Straightening → Cut to length → Pickling → NDT (Eddy-current inspection, UT, Hydraulic pressure inspection)→Packing
FEATURE OF EXTRUDED SEAMLESS TUBE
Extrusion pipe production is completely different from skew rolling and roller rolling and has following characteristics
(1) Compared with other methods of tube process, extrusion method is characteristic of the metal in the process of forming through three-way compressive stress, which can be used to produce low plasticity steel and alloy, such as zirconium alloy, titanium alloy, Ni-Cr-Fe heat resistant alloy, etc for application of atomic energy industry and special chemical industrial. And good surface quality could be obtained.
(2) Extrusion method has great flexibility and mobility due to the simple die, easy to manufacture and replace.
(3) The specification range of tube produced by extruder is larger than other process.
(4) Compared with other methods of tube process, extrusion can get better quality, the mechanical properties of tube are more even, and the inner and outer surface of the tube is better than that of rolling.
HOT EXTRUDING UNIT
(1) 25MN broaching machine and 63MN horizontal extruder imported from Danieli of Italy. Max. extruding speed:300mm/s, max extrusion force 62.17MN, annual production capacity 40000MT.
(2) Extruded pipe size:Φ60～325mm×6～40mm
(3) Extruded pipe length:3000～18000mm
(4) Single pipe billet weight:≤1.2MT
(5) Extruded pipe tolerance: diameter ±1%, Wall thickness ±10%
(6) Suitable for ultra long and ultra thick pipe, size 168 x 10 x 14000mm, single pipe weight 550kg
(7) Main material:austenitic stainless steel, martensitic stainless steel, duplex stainless steel, super stainless steel, nickel-based alloy, Metallurgy composite bimetallic seamless tube , shaped pipe etc.
MAIN EQUIPMENT
HOT PERFORATION PROCESS
Bar → Inspection → Peeling → Cutting → Centering → Heating → Perforation → Pickling → End cutting → Inspection and repairing → CR(CD) → Deoil → Heat treatment → Straightening → Cut to length → Pickling → UDT (Eddy current inspection, UT, Hydraulic pressure inspection) → Packing
COMPETITIVE ADVANTAGE
(1) More than 50 years experience of research and develop in high temperature alloy, corrosion resistance alloy, precision alloy, refractory alloy, rare metal and precious metal material and products.(2) 6 state key laboratories and calibration center.(3) Patent technologies.(4) Exnt performance when running in oil-gas well several tens of thousands of meters deep.
(5) We have terminal customers like Baker Hughes, Halliburton, China national offshore oil corporation LTD (CNOOC), etc.
BUSINESS TERM
| Minimum Order Quantity | 2 metric tons |
| Price | negotiable |
| Packaging Details | water prevent, seaworthy transport, non-fumigation wooden box or pallet |
| Mark | As per order |
| Delivery Time | 90-120 days |
| Payment Terms | T/T, L/C at sight, D/P |
| Supply Ability | 1000 metric tons / Month |
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