Products > OCTG
Oil Country Tubular Goods (OCTG)
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API Standard Pup Joint from 2-3/8" to 4-1/2"
API Oil Tubing Pup Joint
1. Size: 2 3/8", 2 7/8", 3 1/2", 4 1/2";
2. End Type: NU & EU;
3. Steel Grade: J55, K55, N80-1, N80-Q, L80-1, P110 ;
4. Specification: API Spec5CT & API 5B;
5. Technique: Cold Drawn or Hot Rolled
6. Feature: with oil on surface to avoid corrosion, high corrosion resistance and long running life.
7. Dimensions and their tolerances of tubing round-thread as per API spec 5B
8. Our tubing pup joint conform to API 5 CT standards, Length: 2FT/3FT/4FT/5FT/6FT/8FT/10FT/12FT and we can make different lengths and sizes according to the customer's requests.
9. Based on the principle of equality and mutual benefit, we provide the products with high quality at competitive price
10. Thread protector Packing: In Bundle or Wooden Cases or by the requirements of customers
10. Supply Ability: 10,000 EA per month
11. Payment Term: L/C, T/T
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Special Steel Grade Tubing and Casing
1.Products for anti-H2S corrosion
Steel Grades: BG80S,BG80SS,HS80S,HS80SS,BG95S,BG95SS,HS95S,HS95SS,BG110S,BG110SS,HS110S,HS110SS
2. Products for anti- CO2 corrosion
Steel Grades: L80-9Cr,L80-13Cr,BG55-1Cr,BG80-1Cr,BG90-1Cr,BG110-1Cr ,BG80-3Cr,BG90-3Cr,BG110-3Cr
Economic products for anti- H2S+CO2+Cl corrosion
Steel Grades: BG80S-3Cr ,BG90S-3Cr
3. High Collapse Casing pipe produced by our mills have good performance for the extremely deep and complex wells.
High Collapse Casing pipe
High Collapse (HC) grades exhibit higher collapse pressure than what is determined by API 5CT/ISO 11960 products.
We provides the High Collapse Series of proprietary steel grades for oil and gas wells where high external pressures are anticipated and collapse resistances higher than API are needed.
In addition to uniform external pressures, the reservoir can exert high pressures due to ground movements or saline strata, subjecting pipes to extreme localized external pressure.
Our mills have developed the high collapse casings such as: 80T, 90T, 95T, 110T, 125T, 80TT, 90TT, 95TT, 110TT, 125TT casings.
·Process control
1) To control strictly the inclusions in steel via the purity steel melting technology.
2) To control strictly the wall thickness and ovality of the tubes during the hot rolling.
3) To guarantee the yield strength and surface quality through the temperature and atmosphere control in the furnace during the heat treatment.
4) Through the second sizing and on line hot straightening after heat treatment, strictly control the residual stress, OD, ovality and staightness.
4. Oil casing pipe for thermal recovery well
Variety | Size |
Grade |
Connection | Standards | Typical Applications | |
OD in |
WT in |
|||||
Thermal recovery well used casing |
60.3-339.7 (2-3/8’’-13-3/8’’) |
4.83~15.88 (4.6-86) |
HS80H | S/L/B/HSM-1/HSM-2/HSN |
HK29-2011 Or technical specification |
Heavy oil and heat-resistance |
HS90H | ||||||
HS95H | ||||||
HS110H | ||||||
HS125H |
New Product
1. Anti-Collapsing casing series
Self-development:
High collapsing Series:CB80T、CB90T、CB110T、CB125T、CB130T、CB140T、CB150T、CB155T、CB160T
Super High collapsing Series:CB80TT、CB90TT、CB110TT、CB125TT、CB130TT、CB140TT、CB150TT、CB155TT、CB160TT
High collapsing + High Anti-Corrosion:CB80TS/CB80TSS、CB90TS/CB90TSS、CB95TS/CB95TSS、CB110TS/CB110TSS
Features:
According to the development of oil and gas wells, Chang Bao’s collapsing series casing has the following characteristics:
Diameter is round and oval is little----- oval≤ 0.5%
Thickness is high accurate and distance is little ---- the same cross-section inequality is ≤ 9.5%
Strength is high and performance is steady - Heat treatment is by quenching and tempering
Low residual stress
Applications:
Deep and super deep well
To separate rock salt layer and soft layer
Well with the H2S Corrosion condition
2. High and super high strength casing series
Self-development:
Q125, CB130, CB140, CB150, CB155 Series
Features:
High impact toughness;
Testing inside / outside surface of vertical / horizontal L2 level, 100% of WT test; Fitting and pipe body have high strength, and to ensure the internal pressure, external collapse resistance and the overall connection performance well.
Applications:
Mainly used for deep and super deep oil and gas exploitation.
3. Anti-corrosion oil casing series
Self-development:
Anti-H2S Corrosion OCTG Series: CB80S, CB90S, CB95S, CB110S
High Anti-H2S Corrosion OCTG Series: CB80SS, CB90SS, CB95SS, CB110SS
Low Cr anti-CO2 Corrosion OCTG Series: CB90-3Cr, CB95-3Cr, CB110-3Cr, CB125-3Cr
Low Cr anti-CO2+H2S Corrosion OCTG Series: CB80S-3Cr, CB90S-3Cr, CB95S-3Cr, CB110S-2Cr
Low Cr anti-CO2+High Anti-H2S Corrosion OCTG Series: CB80SS-3Cr, CB90SS-3Cr, CB95SS-3Cr
High Cr anti-CO2 Corrosion OCTG Series: CB80-13Cr, CB110-13Cr
High Cr anti-CO2+H2S Corrosion OCTG Series: CB80S-13Cr, CB110S-13Cr
Features:
Steel purity - P ≤ 0.010%, S ≤ 0.006%;
Performance is steady - all cross-sectional area of steel after quenching can receive more than 98% martensite, there will be fine even tempered sorbite organization after tempering
Stress corrosion - to eliminate residual stress, surface corrosion of the structure to form one or several atomic layer of the high stability of alloy corrosion resistance group content of oxide film
Homogeneous - grain size ≥ 8 level, uniform hardness;
Applications:
Wells with CO2 corrosion condition.
Wells with CO2+H2S corrosion condition
Wells with CO2+H2S+Cl- corrosion condition
4. Heavy oil thermal recovery pipes
Self-development:
CB80H, CB100H, CB110H Series
Features:
Performance of tensile under short-time high temperature condition is high. The decline of the performance is little with the temperature rising.
Applications:
Used for prolonged heat exploitation under 350℃ working temperature,
5. Perforating gun barrel
Self-development:25Mn2V, 30CrMo, 32CrMo4 Series
Features:
High precision control of product size, performance and stability
Applications:
Used for the manufacture of oil and gas well perforating gun body.
R & D situation:
Perforation barrel projects are used 25Mn2V, 32CrMo4 (30CrMo) material for trial, the results after testing, performance, size, testing are in line with set requirements
6. Water Injection Pipe
Self-development:
Low Cr anti CO2, Cl-, H2S corrosion of water injection oil casing series
Features:
Style | Anti-CO2 corrosion performance | Anti-H2S corrosion performance | Connection strength with the body | Anti-corrosion performance of connection |
General Performance |
Cost |
Protective Coating | Part corrosion | Failed | Bad | Bad | Good | High |
Plating | Part corrosion | Failed | Bad | Bad | Good | High |
Stainless steel lining | Part corrosion | Failed | Bad | Bad | Good | High |
Nitriding | Depends on the thickness of nitrided layer | Failed | Good | Depends on the thickness of nitrided layer |
Plastic Lower |
High |
KWOMlow Cr product | Adjustment according to condition | Good | General good | Adjustment according to condition | Good | Depends on the alloy content |
Applications:
R & D situation:
KWOMwater injection pipes have been successfully tested. The evaluation of test performance can meet the requirements of the conditions for sale
7. Anti- H2S corrosion line pipes
Product standards, steel grade:
Standard:API SPEC 5L、ISO3183、GB/T9711
Steel Grade:L245NCS、L290NCS、L360NCS、L290QCS、L360QCS、L415QCS、L450QCS
Features:
According to the development needs of oil and gas wells, Chang Po H2S corrosion resistant line pipe has the following characteristics:
Pure steel, in which: P ≤ 0.015%, S ≤ 0.003%; performance and stability, the composition of the uniform
Applications:
Transportation of oil and gas with H2S corrosion condition.
8. Premium connection series
Self-development:
HQST1;HQSC1;HQXT1;HQXC1;HQXST1;HQXST2;HQXSC1;
Cooperative development:
Integ-max、Flush-max、Super-max
Premium connection characteristics:
Considering the requirement of internal and international oil field, KWOMHQST1/HQSC1 premium connection has the following characteristics:
High strength thread - buttress thread
Good in sealing performance - double metal seal structure
Without vortex and erosion - the hole smooth transition
Coupling threads and sealing surface by the copper alloy treatment - anti-galling performance
Applications:
Deep and super deep wells
High-pressure gas wells
Directional wells, wells and other structures requires complex formation connection strength and high sealing performance of oil and gas wells
Corrosion-resistant shaft
R & D situation
Self-development:
KWOMHQST1 Connection :2-3 / 8 ",2-7 / 8" ,3-1 / 2 "tubing products have been successfully developing and debugging, with production capacity.
KWOMHQSC1 Connection: 5 ",5-1 / 2" casing products have been successfully developing and debugging, with production capacity.
KWOMHQXSC1 Connection: 5 "casing is in debit-based authentication .
Co-development of Premium connection.
INTEG MAX Connection: 3-1/2 EU has been successful development and debugging, with production capacity.
SUPER-MAX Connection: 2-7/8 NU has been successful development and debugging, with production capacity.
FLUSH-MAX Connection: 2-7/8 NU has been successful development and debuggin
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Manufacturing HOT ROLLED、COLD DRAWN、SEAMLESS 、ERW、LSAW、
SSAW、SMLS Method Out
Diameter Wall
Thickness Premium Threads APIC Threads Steel Grade Length Range Test
1.66 INCH ---- 4 1/2 INCH 0.1 INCH ---- 1 INCH
Vam series , Hunting series, Tenaris- Hydril series , JFE series Round thread(8tpi, STC and LTC), Buttress thread (5tpi, BTC)
J55/K55, N80-1, R95, M65, N80-Q, L80-1, L80-9Cr, L80-13Cr, C90-1, T95-1, C110, P110, Q125, V150 API STANDER R1、 R2 、R3
NDT Pressure Test Third Party Certification Non-destructive Thread Inspection Hydrostatic test Drifting Test Chemical Analysis
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