Casing 7 Stc K55
Overview
Product sourcing insights & recommendations
The term 'casing 7 stc k55' refers to a 7-inch outer diameter oil well casing pipe made of API 5CT K55 grade steel, featuring Short Round Threads (STC). It is primarily used in onshore oil and gas drilling to provide structural integrity to the borehole, particularly in shallow to medium-depth wells where higher tensile strength than J55 is required Zc-PipeWorldironsteel.
Technical Insights
* Specifications: A standard 7" K55 STC casing typically has a wall thickness of 10.63 mm (29 lb/ft), a minimum yield strength of 55,000 psi (379 MPa), and 8 threads per inch Zc-PipeWorldironsteel.
* Comparison: K55 is preferred over J55 for its higher tensile strength, making it suitable for wells with higher axial loads or horizontal sections Zc-Pipe.
Market Trends (2026 Outlook)
* Valuation: The global well casing market is projected to reach $20.87 billion by 2026, growing at a CAGR of ~5.9% Fortunebusinessinsights.
* Growth Drivers: Increased drilling activity in North America (shale gas) and Asia Pacific is fueling demand. Offshore investments are also rising, expected to hit $79 billion by 2026-2027, pushing the need for premium casing solutions FuturemarketinsightsFortunebusinessinsights.
* Innovation: Manufacturers are focusing on Corrosion-Resistant Alloys (CRA) and "smart casing" with sensors for real-time well monitoring FuturemarketreportFuturemarketinsights.
Sourcing & Supply
The B2B market currently shows stable supply for this specification, with prices generally ranging from $450 to $780 per ton depending on order volume and specific manufacturing standards AlibabaAlibaba. Leading suppliers are concentrated in China's industrial hubs like Tianjin and Hebei AlibabaAlibaba.
7 Inch K55 Stc Casing Api 5ct
Products · 2 lists
Oil Casing Manufacturers Sell at Low Price API 5CT Seamless Casing Pipe K55 7inch 139.7mm BTC STC Ends
Tongda Ganglian Steel Trade Co., Ltd.🇨🇳CN7 yrs
High Quality API 7 Inch 5CT J55 K55 N80 P110 Casing Pipe Seamless Oil Steel Casing and Tubing Pipe Oil Exploration Development
Cangzhou Zhongshun Steel Pipe Trade Co., Ltd.🇨🇳CN17 yrs
API 5CT Grade K55 7 Inch Diameter Seamless Steel Well Casing Pipes
Tianjin Xinyue Industrial And Trade Co., Ltd.🇨🇳CN13 yrs
API 5CT L80/K55/N80 7'' 29PPF BTC END Casing and Tubing Pipe
United Steel Industry Co., Ltd.🇨🇳CN6 yrs
Casing Pipe API 5CT Oilfield Casing OCTG Seamless Carbon Steel Casing Pipe
Shandong Beyond Petroleum Equipment Co., Ltd.verified🇨🇳CN9 yrs
API 5CT N80 Casing Pipe, Oilfield Drilling Pipe, Wellbore Casing Steel Pipe
Dongying Kangya Petroleum Equipment Co., Ltd.verified🇨🇳CN8 yrs
New API 5CT 51/2" STC J55 Seamless Casing Pipe with Engine
Xinxiang Oasis Oil Tools Co., Ltd.🇨🇳CN13 yrs
API 5CT J55 K55 ERW Steel Casing Pipe BTC LTC STC Threaded Coupled OCTG Oil Well Tube for Drilling Rig
Guomai Iron and Steel (Tianjin) Co., Ltd.verified🇨🇳CN1 yr
API 5CT J55 Oil Casing Used Seamless Steel Pipe for Sale ,
Guangzhou Kingmetal Steel Industry Co., Ltd.🇨🇳CN18 yrs
API 5CT/B Carbon Steel Casing Pipe for Oilfield Equipment with Bearing Pump & Pressure Vessel API & CE Certified Tian'en Brand
Gansu Tian'en Heavy Industry Technology Co., Ltd.🇨🇳CN2 yrs
J55 OIL CASING PIPE K55 CASING TUBE
Liaocheng Kuncheng Pipe Co., Ltd.verified🇨🇳CN12 yrs
API 5CT P110 5 Inch 13LB/FT PPF STC Connection R3 Length OCTG Casing Pipe
Tianjin Baode Steel Co., Ltd.🇨🇳CN7 yrs
High Quality API 7 Inch 5CT J55 K55 N80 ERW Casing Pipe Use As Oil Casing
Tianjin Pengbo Weiye Steel Sales Co., Ltd.verified🇨🇳CN10 yrs
API 5CT 7\" J55 K55 Steel Casing Pipe for Oilfield Well Drilling Mining Machine Parts
Shandong Yibin Machinery Co., Ltd.🇨🇳CN3 yrs
7 Inch Casing Pipe API 5ct Oil Casing Thread Btc Black Steel Pipe Best Price Oil Gas Casing Pipe for Drilling
Yangtze Steel Group (China) Co., Ltd.verified🇨🇳CN5 yrs
API 5 CT 4 1/2" /5"/ 5 1/2" 6 5/8"/ 7"oilfield K55/ J55/ N80 /P110 Casing Pipe
Rigrs Oil Machinery Co., Limitedverified🇨🇳CN18 yrs
API-5CT Seamless OCTG Casing Pipe and Tubing Pipe with Grade J55/K55/N80/L80/C95/P110
Shandong Zechen Xinghua New Materials Co., Ltd.verified🇨🇳CN2 yrs
N80 K55 P110 2 7/8" BTC Thread L555 Petroleum Steel Seamless Oil Casing Pipe Supplier
Tianjin Qingze Steel Sales Co., Ltd.verified🇨🇳CN2 yrs
API 5CT N80 J55 K55 P110 L80 2 7/8" BTC for Gas and Oil Pipeline Seamless Oil Casing Tube
Shandong Ruiye Metal Products Co., Ltd.verified🇨🇳CN6 yrs
Premium Quality Seamless Carbon Steel Pipe Casing Api 5ct Octg K55 Q125 AiSi SABS Oil Gas Tubing
Shandong Qingshan Steel Co., Ltd.verified🇨🇳CN2 yrs
API 5CT J55 2-3/8" 4.7LBFT R2 EU Thread Seamless Casing Pipe for Shallow Oil & Gas Wells GS SABS Certified
Shandong Chengxinying Commerce And Trade Co., Ltd.verified🇨🇳CN11 yrs
Inox Premium Production Customized Size API 5CT P110 J55 K55 N80 L80 Oil Casing Pipe JIS Certified Welding Seamless
Seamless Steel Line Oil Casing Pipe API 5CT Gr.B Welded Tube for Petroleum Pipeline for Structure Pipe Octg J55 P110 N80 J80 L80
Tianjin Jinzheng Weiye Pipe Sales Co., Ltd.🇨🇳CN3 yrs
Shengji Api 5ct Octg Seamless Tubing 1.9" 2 7/8" J55 N80 L80 P110 3Cr Casing 9 5/8 Inch 13 3/8 Inch for Production Casing
Shengli Oilfield Shengji Petroleum Equipment Co., Ltd.verified🇨🇳CN9 yrs
Casing and Tubing Pipe Api 5ct L80-1 7 Inch 29lb/ft Ppf R2 Btc Connection Casing Pipes and Tubes for Oil Well
Zhengzhou Jinghe Drilling Machinery Co., Ltd.🇨🇳CN2 yrs
API 5CT ISO CE Certified Oil and Gas Well Casing Tube Factory Sales ASTM Standard
Shandong Yongding Metal Technology Co., Ltd.verified🇨🇳CN2 yrs
Seamless Steel Line Oil Casing Pipe API 5CT Gr.B Welded Tube for Petroleum Pipeline for Structure Pipe Octg J55 P110 N80 J80 L80
Shengji Api 5ct Octg Seamless Tubing 1.9" 2 7/8" J55 N80 L80 P110 3Cr Casing 9 5/8 Inch 13 3/8 Inch for Production Casing
Casing and Tubing Pipe Api 5ct L80-1 7 Inch 29lb/ft Ppf R2 Btc Connection Casing Pipes and Tubes for Oil Well
API 5CT ISO CE Certified Oil and Gas Well Casing Tube Factory Sales ASTM Standard
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Sources & References
22 sources cited · Verified industry data & reports
J55 vs K55 Casing Pipe — API 5CT Grade Comparison
ZC Steel Pipe
K55 is the correct choice where higher tensile strength matters — deeper wells, horizontal sections, or applications requiring tighter ...
API 5CT K55 7inch STC Casing
World Iron & Steel Co.,Ltd
CT K55 7inch STC Casing. OD 177.8mm 29lb/ft Thickness10.63mm STC casing 8thread and 6.25% taper requested
Carbon Steel API 5CT K55 Casing Pipe, 94 PPF, 20 IN, R3, BCT
landeepipe.com
K55 casing pipes in carbon steel, available in 20-inch diameter, R3 threads, and 94 lbs/ft (PPF). Available connection types include BTC, STC, and LTC, Ideal ...
STC Casing Coupling
Equip Outlet Inc
We provide STC casing coulings from 4-1/2′′ to 20′′, in grade J55, K55, Threads are used as mechanical means to hold the neighboring joints together. Size: 4-1 ...
API 5CT K55 | PandaPipe
pandapipe.com
API 5CT K55 is a type of well casing that is typically used in well drilling operations. The casing and tubing are OCTG (oil country tubular goods) that are ...
Oilfield Casing Spools Market Size, Share, Growth Report 2035
www.marketresearchfuture.com
Oilfield Casing Spools Market · English · English · ID: MRFR/EnP/8619-HCR · 111 Pages · Anshula Mandaokar · March 2026 · Share: Download PDF · Download PDF × · Request Free Sample · Buy Now · Summary Table of Contents Segmentation Methodology Download PDF · Market Overview · Market Trends · In addition, the Oilfield Casing Spools Market seems to be shaped by the increasing complexity of drilling operations. As companies seek to access deeper and more challenging reservoirs, the demand for specialized casing spools that can withstand extreme conditions is likely to rise. This trend indicates a need for innovation and adaptation within the industry, as manufacturers strive to meet the specific requirements of modern drilling techniques. The Oilfield Casing Spools Market is witnessing a surge in technological innovations aimed at enhancing the performance and reliability of casing spools. Manufacturers are increasingly adopting advanced materials and engineering techniques to produce spools that can withstand extreme conditions, thereby improving overall operational efficiency. There is a growing trend towards sustainability within the Oilfield Casing Spools Market, as companies seek to minimize their environmental impact. As the market evolves, it is essential for stakeholders to monitor these trends and adapt their strategies accordingly to capitalize on emerging opportunities. The Global Oilfield Casing Spools Market Industry is experiencing a surge in demand driven by the increasing need for oil and gas.